add ttcp utility

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@793 3c298f89-4303-0410-b956-a3cf2f4a3e73

6 files changed, 2418 insertions, 0 deletions

diff --git a/openwrt/package/Config.in b/openwrt/package/Config.in
index cec59679d..98a59f349 100644
--- a/openwrt/package/Config.in
+++ b/openwrt/package/Config.in
@@ -59,6 +59,7 @@ source "package/l2tpd/Config.in"
 source "package/tinc/Config.in"
 source "package/fprobe/Config.in"
 source "package/maradns/Config.in"
+source "package/ttcp/Config.in"
 
 comment "Libraries"
 source "package/libpthread/Config.in"
diff --git a/openwrt/package/Makefile b/openwrt/package/Makefile
index 5560d4c3a..fec065e18 100644
--- a/openwrt/package/Makefile
+++ b/openwrt/package/Makefile
@@ -65,6 +65,7 @@ package-$(BR2_PACKAGE_SPEEX) += speex
 package-$(BR2_PACKAGE_STRACE) += strace
 package-$(BR2_PACKAGE_TCPDUMP) += tcpdump
 package-$(BR2_PACKAGE_TINC) += tinc
+package-$(BR2_PACKAGE_TTCP) += ttcp
 package-$(BR2_PACKAGE_UCLIBCXX) += uclibc++
 package-$(BR2_PACKAGE_USBUTILS) += usbutils
 package-$(BR2_PACKAGE_WIRELESS_TOOLS) += wireless-tools
diff --git a/openwrt/package/ttcp/Config.in b/openwrt/package/ttcp/Config.in
new file mode 100644
index 000000000..681ee2bf4
--- /dev/null
+++ b/openwrt/package/ttcp/Config.in
@@ -0,0 +1,5 @@
+config BR2_PACKAGE_TTCP
+	tristate "ttcp"
+	default m if CONFIG_DEVEL
+	help
+	  A small utility to test TCP connection performance
diff --git a/openwrt/package/ttcp/Makefile b/openwrt/package/ttcp/Makefile
new file mode 100644
index 000000000..ec91ef735
--- /dev/null
+++ b/openwrt/package/ttcp/Makefile
@@ -0,0 +1,31 @@
+# $Id$
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ttcp
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/ttcp
+PKG_IPK_DIR:=$(PKG_BUILD_DIR)
+PKG_IPK:=$(PACKAGE_DIR)/$(PKG_NAME)_$(PKG_RELEASE)_$(ARCH).ipk
+
+$(PKG_BUILD_DIR)/usr/bin/ttcp:
+	mkdir -p $(PKG_BUILD_DIR)/usr/bin
+	$(TARGET_CC) -o $@ ttcp.c
+	$(STRIP) $@
+
+$(PKG_IPK): $(PKG_BUILD_DIR)/usr/bin/ttcp
+	$(SCRIPT_DIR)/make-ipkg-dir.sh $(PKG_IPK_DIR) $(PKG_NAME).control $(PKG_RELEASE) $(ARCH)
+	$(IPKG_BUILD) $(PKG_IPK_DIR) $(PACKAGE_DIR)
+
+$(IPKG_STATE_DIR)/info/$(PKG_NAME).list:
+	$(IPKG) install $(PKG_IPK)
+
+source:
+prepare:
+compile: $(PKG_IPK)
+install: $(IPKG_STATE_DIR)/info/$(PKG_NAME).list
+
+clean:
+	rm -rf $(PKG_BUILD_DIR)
+	rm -f $(PKG_IPK)
diff --git a/openwrt/package/ttcp/ttcp.c b/openwrt/package/ttcp/ttcp.c
new file mode 100644
index 000000000..456209333
--- /dev/null
+++ b/openwrt/package/ttcp/ttcp.c
@@ -0,0 +1,2374 @@
+/*
+ *        T T C P . C
+ *
+ * Test TCP connection.  Makes a connection on port 5001
+ * and transfers fabricated buffers or data copied from stdin.
+ *
+ * Usable on 4.2, 4.3, and 4.1a systems by defining one of
+ * BSD42 BSD43 (BSD41a)
+ * Machines using System V with BSD sockets should define SYSV.
+ *
+ * Modified for operation under 4.2BSD, 18 Dec 84
+ *       T.C. Slattery, USNA
+ * Minor improvements, Mike Muuss and Terry Slattery, 16-Oct-85.
+ * Modified in 1989 at Silicon Graphics, Inc.
+ *        catch SIGPIPE to be able to print stats when receiver has died 
+ *        for tcp, don't look for sentinel during reads to allow small transfers
+ *        increased default buffer size to 8K, nbuf to 2K to transfer 16MB
+ *        moved default port to 5001, beyond IPPORT_USERRESERVED
+ *        make sinkmode default because it is more popular, 
+ *                -s now means don't sink/source 
+ *        count number of read/write system calls to see effects of 
+ *                blocking from full socket buffers
+ *        for tcp, -D option turns off buffered writes (sets TCP_NODELAY sockopt)
+ *        buffer alignment options, -A and -O
+ *        print stats in a format that's a bit easier to use with grep & awk
+ *        for SYSV, mimic BSD routines to use most of the existing timing code
+ * Modified by Steve Miller of the University of Maryland, College Park
+ *        -b sets the socket buffer size (SO_SNDBUF/SO_RCVBUF)
+ * Modified Sept. 1989 at Silicon Graphics, Inc.
+ *        restored -s sense at request of tcs@brl
+ * Modified Oct. 1991 at Silicon Graphics, Inc.
+ *        use getopt(3) for option processing, add -f and -T options.
+ *        SGI IRIX 3.3 and 4.0 releases don't need #define SYSV.
+ *
+ * Modified --> Nov 1996 at CERN (Daniel DAVIDS)
+ *        printout of the Socket-Buffer-Sizes 
+ *        configured for HP-UX 9000 OS        
+ *        configured for Windows NT OS 
+ * Modified Dec 1996 at CERN (Jacques ROCHEZ)
+ *        severe cleanup
+ *        addaptation to the gcc compiler (ANSI)
+ *        configured for Lynx OS 
+ *        automatic format for the rate display (G/M/K/)bytes/sec
+ *        added log (L) and more help (h) options.
+ * Modified May 1997 at CERN (Jacques ROCHEZ) 
+ *        removed the mes() function following err() function.
+ *        changed the default port to 5010
+ * Modified jul 1997 at CERN (Jacques ROCHEZ)
+ *        adapted the timing calculation in microseconds 
+ *        addapted the code for Vsisual C++ under NT4.0 
+ * Modified aug 1997 at CERN (Jacques ROCHEZ)
+ *        initialise to 0 the variables nbytes, numcalls  
+ *        moved the buffer pre-load outside the measured timed area 
+ * Distribution Status -
+ *        Public Domain.  Distribution Unlimited.
+ * Modified jun 1998 at Epigram
+ *        - print hash marks to indicate prograss on transmitting side
+ *        - sleep between bursts of buffers
+ *        - set number of buffers/burst
+ * Modified jul 1998 at Epigram
+ *        - send random size buffers
+ * Modified jan 1999 at Epigram (WES)
+ *        - added start and end patterns to UDP start and end packets
+ *        - added handling of missed start, end, or data packets for UDP tests
+ */
+#ifndef lint
+static char RCSid[] = "ttcp.c $- CERN Revision: 3.8 (dev level) -$";
+#endif
+
+static char VersDate[] = "Epigram 15-jul-98";
+
+/*                system dependent setting
+ *                ------------------------
+ * uname -a,gcc -v a.c are the tools used                              
+ *
+ * Platform/OS          #define         MACRO predefined 
+ * -----------          -------   ---------------------------------------------------
+ * SunOS OS             BSD43     __unix__   __sun__   __sparc__
+ * SUN Solaris           SYSV     __unix__   __sun__   __sparc__   __svr4__ 
+ * SGI-IRIX  < 3.3 SYSV     set as #define sgi
+ * HP-UX 9000           SYSV      __unix__   __hpux__  __hp9k8__
+ * OSF/1 V3.2           SYSV      __unix__   __osf__   __alpha__
+ * OSF/1 V4.0           SYSV      __unix__   __osf__   __alpha__   _CFE
+ * LynxOS               SYSV      __unix__   __lynx__  __powerpc__
+ * Windows NT           SYSV                 __WINNT__ __i386__    __M_COFF__
+ * AIX                  SYSV      _AIX       _AIX32    _POWER      _IBMR2   _ARCH_PWR
+ 
+
+ * Micosoft Visual C++ compiler under WindowNT 4.0
+ * Windows NT                    _WINDOWS    WIN32 
+
+ * Unix BSD 41a         BSD41a
+ *          42          BSD42
+ *          43          BSD43
+ 
+ * Machines using System V with BSD sockets should define SYSV.
+ *
+ *            Compiler commands 
+ *            -----------------
+ * LynxOS : gcc -c ttcp.c -o ttcp.o | gcc -o ttcp -O ttcp.o -lnetinet -lc_p -lc
+ */
+
+/* -------------attempt to set an automatic UNIX  OS family detection -------*/
+
+#if defined(__hp9k8__) || defined(__osf__) || defined(__srv4__)  
+#define SYSV
+#endif
+#if defined(__lynx__)  
+#define SYSV
+#endif
+/* for solaris (__srv4__) the parameters SYSV is already set */
+
+/* version A.09.01  'key words' differs from A.09.05 A */ 
+#if defined(__hpux)
+#define __hpux__
+#endif
+
+#if defined(__sun__)&&!defined(__srv4__)
+#define BSD43                  /* changed by BSD42 if necessary */
+#endif
+
+#if defined(_WIN32)                /* Window NT 4.0 compiled with VisualC++ 4 */
+#define __NTVIS__
+#define SYSV
+#endif 
+
+#if defined(__FreeBSD__)
+#define BSD43
+#endif
+
+#if defined(__linux__)
+#define BSD43
+#endif
+/*--------------------------------------------------------------------------*/
+
+#if !defined(UNDER_CE)
+#include <signal.h>
+#include <ctype.h>
+#include <errno.h>
+#include <sys/types.h>
+#endif
+
+#if defined(SYSV)
+
+#if defined(__osf__) 
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/time.h>           /* struct timeval */
+#include <sys/resource.h>       /* definition of struct rusage */    
+
+#else  /* else of __osf__ */ 
+#if defined(__NTVIS__)
+#include <winsock2.h>
+#include <windows.h>            /* required for all Windows applications */
+#include <ws2tcpip.h>
+#include <memory.h>
+#include <time.h>
+#if !defined(UNDER_CE)
+#include <sys\timeb.h> 
+#include <fcntl.h>
+#endif
+#include <stdlib.h>
+#include <io.h>
+struct rusage { struct timeval ru_utime, ru_stime; };
+#define RUSAGE_SELF 0
+#else  /* else of __NTVIS__ */  
+#if defined(__lynx__)
+#include <socket.h>             /* located in  /usr/include/..... */
+#include <netinet/in.h>    
+#include <netinet/tcp.h> 
+#include <arpa/inet.h>     
+#include <netdb.h>         
+#include <time.h> 
+#include <resource.h>           /* definition of struct rusage */    
+#include <sys/times.h>
+#define RUSAGE_SELF 0
+#include <conf.h>               /* definition of TICKSPERSEC (HZ) */
+#include <sys/param.h>     
+
+#else  /* else of __Lynx__  */
+#if defined(__svr4__)
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/time.h>           /* struct timeval */
+#include <sys/resource.h>       /* definition of struct rusage */    
+#include <sys/times.h>
+#define RUSAGE_SELF 0
+#include <sys/param.h>     
+
+#else  /* else of __svr4__    all SYSV cases except those mentionned before */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <sys/time.h>           /* struct timeval */
+#include <sys/resource.h>       /* definition of struct rusage */    
+#include <sys/times.h>
+#define RUSAGE_SELF 0
+#include <sys/param.h>     
+
+#endif /* __svr4__  */
+#endif /* __lynx__  */
+#endif /* __NTVIS__ */
+#endif /* __osf__   */
+
+#else  /* else of SYSV      it is a BSD OS  */
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#if defined(__linux__)
+#include <time.h>           /* struct timeval */
+#else
+#include <sys/time.h>           /* struct timeval */
+#endif
+#include <sys/resource.h>       /* definition of struct rusage */
+#include <unistd.h>		/* for usleep() - henry */
+#define SOCKET_ERROR	-1
+
+#endif /* SYSV */
+
+#if defined(__NTVIS__)
+
+#if defined(_DEBUG)     /* usual debug symbol for VC++ */
+#define DEBUG 1
+#endif
+
+void usleep(unsigned int microseconds);
+
+#define bcopy(a,b,n) memcpy((b), (a), (n))
+#define bzero(a,n) memset((a), 0, (n))
+
+#ifndef _GETOPT_
+#define _GETOPT_
+int getopt(int argc, char **argv, char *optstring);
+
+extern char *optarg;                // returned arg to go with this option
+extern int optind;                  // index to next argv element to process
+extern int opterr;                  // should error messages be printed?
+extern int optopt;                  //
+
+#define BADCH ('?')
+#endif // _GETOPT
+
+/* get option letter from argument vector  */
+int
+        opterr = 1,                  // should error messages be printed?
+        optind = 1,                  // index into parent argv vector
+        optopt;                      // character checked for validity
+char   *optarg;                      // argument associated with option
+
+#define EMSG        ""
+char *progname;                      // may also be defined elsewhere
+#endif /*__NTVIS__*/
+
+/* sockaddr_in ==  file server address structure 
+ * 
+ * Socket address, internet style.   declared in : /netinet/in.h
+ * struct sockaddr_in {short   sin_family;
+ *                     u_short sin_port;
+ *                     struct  in_addr sin_addr;
+ *                     char    sin_zero[8];
+ *                    };
+ *
+ * Structure used by kernel to store most addresses. declared in ./sys/socket.h
+ * struct sockaddr{u_short sa_family;       address family
+ *                 char    sa_data[14];     up to 14 bytes of direct address 
+ *                };
+ * PS : sin stand for "socket internet number" 
+ */
+
+#ifndef __NTVIS__
+#define FAR
+#endif
+
+#if     defined(__CONST_SOCKADDR_ARG)
+#define SOCKADDR_CAST   (__CONST_SOCKADDR_ARG)
+#elif  defined(__lynx__) || defined(__sun__) || defined(_AIX) || defined(__FreeBSD__) || defined(__NTVIS__)
+#define SOCKADDR_CAST   (struct sockaddr FAR *)
+#else
+#define SOCKADDR_CAST
+#endif
+
+#if defined(__sun__)
+struct sockaddr_in sockaddr;   /* done in ./X11/Xdmcp.h */
+#endif 
+
+struct sockaddr_in sinme;     /* is the socket struct. in the local host */
+struct sockaddr_in sinhim;    /* is the socket struc. in the remote host */
+
+#if defined(__lynx__) || defined(__svr4__) || defined(_AIX) 
+struct sockaddr frominet;
+#else
+struct sockaddr_in frominet;
+#endif /* __lynx__ */
+
+int domain, fromlen;
+
+#if !defined(__NTVIS__)
+#define SOCKET int
+#endif /* __NTVIS__ */
+SOCKET fd;                             /* fd of network socket */
+
+#if !defined(__lynx__)
+extern int errno;
+#endif 
+
+#include <stdio.h>
+
+FILE  *fplog = NULL;                   /* file pointer for the log file */
+char  logfile[100];                    /* file name for the log */
+static char logfile_head[] ="ttcp_log";   /* header  name for the log */
+int   buflen = 8 * 1024;               /* length of buffer */
+char  *buf;                            /* ptr to dynamic buffer */
+int   nbuf = 2 * 1024;                 /* number of buffers to send in sinkmode */
+
+#define START_PKT_LEN 4
+#define START_PATTERN_LEN 4
+#define END_PKT_LEN 8
+#define END_PATTERN_LEN 4
+#define MIN_UDP_LEN 5
+
+char start_pattern[START_PATTERN_LEN] = {1, 2, 3, 4};
+char end_pattern[END_PATTERN_LEN] = {2, 2, 2, 2};
+
+int   bufoffset = 0;                   /* align buffer to this */
+int   bufalign = 16*1024;              /* modulo this */
+
+int   udp = 0;                         /* 0 = tcp, !0 = udp */
+int   options = 0;                     /* socket options */
+int   one = 1;                         /* for 4.3 BSD style setsockopt() */
+short port = 5010;                     /* TCP port number */
+char *host;                            /* ptr to name of host */
+int  rndm = 0;                         /* 0="normal", !0=random data */
+int  trans;                            /* 0=receive, !0=transmit mode */
+int  timeout;                          /* read timeout in millisec */
+int  debug = 0;                        /* 0=No-Debug, 1=Debug-Set-On */
+int  sinkmode = 0;                     /* 0=normal I/O, !0=sink/source mode */
+int  verbose = 0;                      /* 0=print basic info, 1=print cpu rate,
+                                        * proc resource usage. */
+int  nodelay = 0;                      /* set TCP_NODELAY socket option */
+int  pri = 0;                          /* link layer priority */
+int  b_flag = 0;                       /* use mread() */
+int  log_cnt = 0;                      /* append result to a log */
+int  sockbufsize = 0;                  /* socket buffer size to use */
+char fmt = 'A';                        /* output format:
+                                        *  b = bits,     B = bytes,
+                                        *  k = kilobits, K = kilobytes,
+                                        *  m = megabits, M = megabytes, 
+                                        *  g = gigabits, G = gigabytes,
+                                        *  A = automatic Xbytes (default) */
+int  touchdata = 0;                    /* access data after reading */
+int  seq_info = 0;                     /* report out of order seq nums */
+
+int hash = 0;                          /* print hash marks for each buffer */
+int udpsleep = 0;                      /* sleep in between udp buffers */
+int burstn = 1;                        /* number of buffers per burst */
+int bufmin = -1;                       /* minimum buffer size to use when
+                                          sending random-size buffers */
+unsigned int seed = 1;                 /* seed for random number generator
+                                          used for random buffer lengths */
+int no_start = 0;                      /* skip the start frames for UDP */
+int no_data = 0;                       /* skip all data frames for UDP */
+int no_end = 0;                        /* skip the end frames for UDP */
+
+double   nbytes;                       /* bytes on net */
+unsigned long numCalls;                /* # of I/O system calls */
+
+struct hostent *addr;
+extern int optind;
+extern char *optarg;
+
+#if defined(UNDER_CE)
+static int errno;
+static char *weekday[] ={"Sun", "Mon","Tues", "Wed", "Thurs", "Fri", "Sat"};
+static char *month[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "July", "Aug", "Sep", "Oct", "Nov", "Dec"};
+#define perror printf
+#endif
+
+/*--------------------------------------------------------------------------*/
+static struct timeval time0;    /* Time at which timing started */
+static struct timeval time1;
+static struct rusage ru0;       /* Resource utilization at the start */
+static struct rusage ru1;
+static struct tm *tms;        /* system time structure */
+
+
+/*-----------Prototype functions definitions -------------------------------*/
+/*--------------------------------------------------------------------------*/
+
+                                   /* ANSI input/output functions (stdio.h) */
+
+#if defined(__lynx__)
+int  getopt(int, char**, char*);
+int  gettimeofday(struct timeval *tp, struct timezone *tzp);
+
+#else
+#if defined(__svr4__)
+
+#else 
+#if defined(_AIX)
+
+#else
+#if defined(__hpux__)
+#else
+#if defined(__NTVIS__)
+#else 
+#if defined(BSD42) || defined(BSD43)
+#else
+
+int  printf( char*, ...);
+int  fprintf(FILE*,char*, ...);
+void perror(char*);
+int  getopt(int, char**, char*);
+int  gettimeofday(struct timeval *tp, struct timezone *tzp);
+#endif  /* BSD42 || BSD43 */
+#endif  /* __NTVIS__ */
+#endif  /* __hpux__ */
+#endif  /*  _AIX    */
+#endif  /* __svr4__ */
+#endif  /* __lynx__ */ 
+
+int main(int argc, char* argv[]); 
+#if ( (!(defined(BSD42))) && (!(defined(BSD43))) && (!(defined(__NTVIS__))) )
+int  read(int, char*, int);
+int  write(int, char*, int);
+int  close(int);
+#endif /* !(BSD42) && !(BSD43) */
+int  fclose(FILE *stream);
+
+#if !defined(BSD43) && !defined(__NTVIS__)
+void bzero(char*,int);
+void bcopy(char*, char*, int);
+char strncpy(char *s1,char *s2,size_t n);
+int  atoi(char*);
+int  malloc(int);
+#endif
+
+
+                           /* ANSI socket functions prototype /sys/socket.h */
+#if defined(__lynx__)
+int  select(int, fd_set*, fd_set*, fd_set*, struct timeval*); 
+
+#else 
+#if defined(__svr4__) && !defined(sparc)
+
+/*  informations in : /usr/include/sys/socket.h */
+int  socket(int, int, int); 
+int  connect(int, struct sockaddr *, int);
+int  bind(int, struct sockaddr *, int);
+int  listen(int, int);
+int  accept(int, struct sockaddr *, int *);
+int  sendto(int, const char *, int, int, const struct sockaddr *, int);
+int  recvfrom(int, char *, int, int, struct sockaddr *, int *);
+int  getpeername(int, struct sockaddr *, int *);
+int  getsockopt(int, int, int, char *, int *);
+int  select(int, fd_set*, fd_set*, fd_set*, struct timeval*); 
+
+#else
+#if defined(_AIX)
+int  select(unsigned long, void *, void *, void *, struct timeval *);
+
+#else
+#if defined(__hpux__)
+int getrusage(int who,struct rusage *rusage);
+
+#else 
+#if defined(__NTVIS__)
+
+#else
+#if defined(BSD42) || defined(BSD43)
+
+#else
+
+int  socket(int, int, int);
+int  connect(int s,struct sockaddr_in *name, int namelen);
+int  bind(int s,struct sockaddr *name,int namelen);
+int  listen(int, int);
+int  accept(int, struct sockaddr_in *, int *);
+int  sendto(int, char *, int, int, struct sockaddr_in *, int);
+int  recvfrom(int, char *, int, int, struct sockaddr_in *, int *);
+int  getpeername(int, struct sockaddr *, int *);
+int  setsockopt(int, int, int, char *, int);
+
+int  getsockopt(int, int, int, char*, int*);
+int  select(int, fd_set*, fd_set*, fd_set*, struct timeval*); 
+
+#endif /* BSD42 || BSD43 */
+#endif /* __hpux__ */
+#endif /*  _AIX    */
+#endif /* __svr4__ */
+#endif /* __lynx__ */ 
+#endif /* __NTVIS__ */
+
+/* ttcp prototype functions */
+void udp_rcv_test(void);
+double calc_cpu_time(struct rusage *r0, struct rusage *r1);
+double calc_real_time(struct timeval *t0, struct timeval *t1);
+int  getrusage(int who,struct rusage *rusage);
+void sockets_err(char*);
+void err(char *);
+void mes(char *);
+void pattern(char *, int);
+int  Nread(SOCKET, void *, int);
+int  Nwrite(int, void *, int);
+void delay(int);
+int  mread(int, char *,unsigned);
+char *outfmt(char format, double b);
+void prep_timer(void);
+void read_timer(void);
+void result_summary(void);
+void prusage(struct rusage*,  struct rusage*,
+             struct timeval*, struct timeval*); 
+void tvadd(struct timeval *tsum, struct timeval *t0,struct timeval *t1);
+void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0);
+void psecs(int);
+void open_log(void);
+void close_log(void);
+void do_Usage(void);
+void do_help(void);
+
+/*--------------------------------------------------------------------------*/
+#if !defined(__NTVIS__)
+void 
+sigpipe()
+{;
+}
+#endif
+/*--------------------------------------------------------------------------*/
+/*--------------------------------------------------------------------------*/
+int
+main(int argc, char **argv)
+{
+  unsigned long addr_tmp;
+  int c,k;
+  int sockbufsndsize,sockbufrcvsize;
+  int sockbuflen;
+  struct sockaddr_in peer;
+  int peerlen = sizeof(peer);
+
+#if defined(__NTVIS__)
+  extern char *optarg;
+  WSADATA WSAData;
+  WSAStartup(MAKEWORD(1,1), &WSAData);
+#endif /* __NTVIS__ */
+
+  if (argc < 2) { do_Usage(); exit(1); }
+
+  while (1) {
+    while ((c=getopt(argc, argv, "hidrstuvxHVBDTLb:f:l:n:p:A:O:S:N:P:R:I:w:")) != -1) {
+      switch (c) {
+        case 'w':
+           timeout = atoi(optarg);
+           break;
+        case 'I':
+           seed = atoi(optarg);
+           break;
+        case 'N':
+           burstn = atoi(optarg);
+           break;
+	case 'P':
+#if defined(__linux__)
+	   pri = atoi(optarg);
+	   break;
+#else
+	   fprintf(stderr, "ttcp: -P option not supported on this OS\n");
+	   exit(1);
+#endif
+	case 'R':
+	   bufmin = atoi(optarg);
+	   break;
+        case 'S':
+           udpsleep = atoi(optarg);
+           if (udpsleep < 0) udpsleep = 0;
+           /* convert msec arg to usec for usleep, minimum 10ms */
+           udpsleep = udpsleep * 1000;
+           break;
+        case 'H':
+           hash = 1;
+           break;
+        case 'V':
+           fprintf(stdout,"%s %s\n" , RCSid , VersDate );
+           exit(0);
+        case 'B':
+          b_flag = 1;
+          break;
+        case 'L':
+          log_cnt = 1;
+          break;
+        case 'h':
+          do_help();
+          exit(1);
+          break;
+        case 't':
+          trans = 1;
+          break;
+        case 'r':
+          trans = 0;
+          break;
+        case 'x':
+          rndm = 1;
+          break;
+        case 'd':
+          options |= SO_DEBUG;
+          break;
+        case 'D':
+#ifdef TCP_NODELAY
+        nodelay = 1;
+#else
+        fprintf(stderr, 
+       "ttcp: -D option ignored: TCP_NODELAY socket option not supported\n");
+#endif
+          break;
+        case 'n':
+          nbuf = atoi(optarg);
+          break;
+        case 'l':
+          buflen = atoi(optarg);
+          break;
+        case 's':
+          sinkmode = !sinkmode;
+          break;
+        case 'p':
+          port = atoi(optarg);
+          break;
+        case 'u':
+          udp = 1;
+          break;
+        case 'v':
+          verbose = 1;
+          break;
+        case 'A':
+          bufalign = atoi(optarg);
+          break;
+        case 'O':
+          bufoffset = atoi(optarg);
+          break;
+        case 'b':
+#if defined(SO_SNDBUF) || defined(SO_RCVBUF)
+          sockbufsize = atoi(optarg);
+#else
+          fprintf(stderr, 
+"ttcp: -b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported\n");
+#endif
+          break;
+        case 'f':
+          fmt = *optarg;
+          break;
+        case 'T':
+          touchdata = 1;
+          break;
+        case 'i':
+          seq_info = 1;
+          break;
+          
+      default:
+          {do_Usage(); exit(1);}
+       }/*switch */
+    }/* while getopt() */
+
+    argc -= optind;
+    argv += optind;
+    optind = 0;
+    
+    /* check for '--' args */
+    if (argc == 0) {
+      /* no more args */
+      break; /* while (1) */
+#if defined(DEBUG)
+    } else if (!strcmp(argv[0], "--nostart")) {
+      no_start = 1;
+      argc--; argv++;
+    } else if (!strcmp(argv[0], "--nodata")) {
+      no_data = 1;
+      argc--; argv++;
+    } else if (!strcmp(argv[0], "--noend")) {
+      no_end = 1;
+      argc--; argv++;
+    } else if (!strcmp(argv[0], "--debug")) {
+      debug = 1;
+      argc--; argv++;
+#endif /* DEBUG */
+    } else if (!strncmp(argv[0], "--", 2)) {
+      fprintf(stderr, "ttcp: illegal option: %s\n", argv[0]);
+      do_Usage(); exit(1);
+    } else {
+      /* the arg was not a '--' arg */
+      break; /* while (1) */
+    }
+  } /* while (1) */
+  
+    
+ /* ----------------------- main part ----------------------- */
+
+#if defined(__NTVIS__) && !defined(UNDER_CE)
+  /* Set "stdin" to have binary mode: */
+  if (_setmode(_fileno(stdin), _O_BINARY) == -1)
+    perror("%s: Error setting stdin to binary mode");
+  /* Set "stdout" to have binary mode: */
+  if (_setmode(_fileno(stdout), _O_BINARY) == -1)
+    perror("%s: Error setting stdout to binary mode");
+#endif /* __NTVIS__ */
+
+if (log_cnt) open_log(); 
+
+/* input error checking */
+if (burstn > nbuf) {
+    fprintf(stderr, "ttcp: buffers per burst must be less than or equal to "
+        "total number of buffers\n");
+    exit(1);
+}
+if (bufmin < -1) {
+    fprintf(stderr, "ttcp: minimum buffer size specified with -R option must "
+        "be non-negative\n");
+    exit(1);
+}
+if (buflen > 65535) {
+    fprintf(stderr, "ttcp: maximum buffer size specified with -l option must "
+        "be <= 65536\n");
+    exit(1);
+}
+if (bufmin > buflen) {
+    fprintf(stderr, "ttcp: minimum buffer size specified with -R option must "
+        "be less than or equal to (maximum) buffer size specified with -l\n");
+    exit(1);
+}
+
+/* buffer allocation */
+
+ if (udp && buflen < MIN_UDP_LEN) 
+   buflen = MIN_UDP_LEN;        /* send more than the sentinel size */
+ 
+ if ( (buf = (char *)malloc(buflen+bufalign)) == (char *)NULL) 
+      err("malloc");
+ if (bufalign != 0)
+      buf +=(bufalign - ((int)buf % bufalign) + bufoffset) % bufalign;
+ 
+ fprintf(stderr,"ttcp%s: buflen=%d, nbuf=%d, align=%d/%d, port=%d\n",
+            trans?"-t":"-r",buflen, nbuf, bufalign, bufoffset, port);
+ if (log_cnt)fprintf(fplog," %6d %6d %6d %6d %4d",
+                      buflen, nbuf, bufalign, bufoffset, port);
+
+ /* preload the buffer for the transmit condition */
+ pattern( buf, buflen );
+
+ /* seed the random number generator */
+ if ((bufmin != -1) || (rndm != 0)) {
+#if defined(__NTVIS__)
+   srand(seed);
+#else /* ! __NTVIS__ */
+   srandom(seed);
+#endif /* __NTVIS__ */
+ }
+
+ if(trans)  
+   {/* xmitr */
+     if (argc == 0) {
+       fprintf(stderr, "ttcp: missing destination host arg\n");
+       do_Usage(); exit(1);
+     }
+     
+     bzero((char *)&sinhim, sizeof(sinhim));
+     host = argv[0];
+     if (atoi(host) > 0 )  
+       {/* Numeric */
+         sinhim.sin_family = AF_INET;
+         sinhim.sin_addr.s_addr = inet_addr(host);
+       } 
+     else 
+       {if ((addr=gethostbyname(host)) == NULL) sockets_err("bad hostname");
+        sinhim.sin_family = addr->h_addrtype;
+        bcopy(addr->h_addr,(char*)&addr_tmp, addr->h_length);
+        sinhim.sin_addr.s_addr = addr_tmp;
+       }
+     sinhim.sin_port = htons(port);
+     sinme.sin_port = 0;                /* free choice */
+   } 
+ else 
+   {/* rcvr */
+     sinme.sin_port =  htons(port);
+   }
+#if defined(__NTVIS__)
+ sinme.sin_family = AF_INET;
+#endif
+ 
+ fd = socket(AF_INET, udp?SOCK_DGRAM:SOCK_STREAM, 0);
+
+#if defined(__NTVIS__)
+ if (fd == INVALID_SOCKET) sockets_err("socket");
+#else
+ if (fd < 0) sockets_err("socket");
+#endif
+ 
+ if (verbose) {
+	char *label = trans?"ttcp-t":"ttcp-r";
+#if defined(UNDER_CE)
+	SYSTEMTIME SystemTime;
+	char time_str[30];
+
+	GetLocalTime(&SystemTime);
+	sprintf(time_str, "%s %s %d %02d:%02d:%02d %d\n", weekday[SystemTime.wDayOfWeek], month[SystemTime.wMonth - 1],
+		SystemTime.wDay, SystemTime.wHour, SystemTime.wMinute, SystemTime.wSecond, SystemTime.wYear);
+#else
+   time_t now;
+   char *time_str; 
+       
+   time(&now);
+   time_str = ctime(&now);
+#endif
+   fprintf(stdout,"%s: start time %s", label, time_str);
+   fprintf(stdout,"%s: File-Descriptor 0x%x Opened\n", label, fd );
+ }
+
+#if defined(__NTVIS__)
+ if (bind(fd, (struct sockaddr FAR *)&sinme, sizeof(sinme)) == SOCKET_ERROR) 
+   sockets_err("bind");
+#else
+ if (bind(fd, SOCKADDR_CAST &sinme, sizeof(sinme)) < 0) 
+   sockets_err("bind");
+#endif /* __NTVIS__ */
+
+
+#if defined(SO_SNDBUF) || defined(SO_RCVBUF)
+ if (sockbufsize) 
+   {
+#if defined(__lynx__) || defined(__sun__)  || defined(__NTVIS__)
+     if (trans) 
+       {if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *)&sockbufsize,
+                       sizeof sockbufsize) < 0)  
+        sockets_err("setsockopt: sndbuf");
+       } 
+     else 
+       {if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&sockbufsize,
+                       sizeof sockbufsize) < 0)  
+        sockets_err("setsockopt: rcvbuf");
+       }
+
+#else
+     if (trans) 
+
+         {if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
+                       sizeof sockbufsize) < 0) 
+        sockets_err("setsockopt: sndbuf");
+       } 
+     else 
+       {if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
+                       sizeof sockbufsize) < 0) 
+        sockets_err("setsockopt: rcvbuf");
+       }
+#endif /* __lynx__ __sun__ __NTVIS__ */ 
+   }
+ else
+   {/*
+    ** Added by Daniel Davids to Know Socket-Buffer-Sizes
+    */
+     sockbuflen = sizeof sockbufsndsize;
+#if defined(__lynx__) || defined(__sun__) || defined(__NTVIS__)
+     getsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char *)&sockbufsndsize, 
+                &sockbuflen);
+     sockbuflen = sizeof sockbufrcvsize;
+     getsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&sockbufrcvsize, 
+                     &sockbuflen);
+#else
+     getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sockbufsndsize, &sockbuflen);
+     sockbuflen = sizeof sockbufrcvsize;
+     getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &sockbufrcvsize, &sockbuflen);
+#endif /* __lynx__ __sun__ __NTVIS__ */
+     sockbufsize = ( sockbufsndsize + sockbufrcvsize ) / 2;
+
+     if ( sockbufsndsize != sockbufrcvsize )
+       {fprintf(stderr, "sockbufsndsize=%d, ", sockbufsndsize );
+       fprintf(stderr, "sockbufrcvsize=%d, ", sockbufrcvsize );
+       }
+   }
+#endif /* defined(SO_SNDBUF) || defined(SO_RCVBUF) */
+ 
+ if (sockbufsize) fprintf(stderr, "sockbufsize=%d, \n", sockbufsize);
+
+ if (log_cnt)
+   {if (sockbufsize)fprintf(fplog," %6d",sockbufsize);
+    else fprintf(fplog," 0");
+   }
+
+#if defined(__linux__)
+ if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, (char *)&pri, sizeof pri) < 0)  
+   sockets_err("setsockopt: priority");
+#endif
+
+
+ if (trans)  fprintf(stderr, "# %s sender -> %s #\n", udp?"udp":"tcp", host);
+ else        fprintf(stderr, "# %s receiver #\n", udp?"udp":"tcp");
+ 
+ if (!udp)  
+   {
+#if !defined(__NTVIS__)
+     signal(SIGPIPE, sigpipe);
+#endif /* !__NTVIS__ */
+
+     if (trans) 
+       {/* We are the client if transmitting */
+         if (options)  
+           {
+#if defined(BSD42)
+            if( setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
+#else /* BSD43 */
+       if( setsockopt(fd, SOL_SOCKET, options, (char *)&one, sizeof(one)) < 0)
+#endif /* BDS42 */
+           sockets_err("setsockopt");
+           }
+#ifdef TCP_NODELAY
+         if (nodelay) 
+           {struct protoent *p;
+            p = getprotobyname("tcp");
+#if defined(__lynx__)  || defined(__sun__)        || defined(__NTVIS__)
+                if( p && setsockopt(fd, p->p_proto, TCP_NODELAY, 
+                                      (char *) &one, sizeof(one)) < 0)
+#else 
+            if( p && setsockopt(fd, p->p_proto, TCP_NODELAY, 
+                                      &one, sizeof(one)) < 0)
+#endif /* __lynx__  __sun__ __NTVIS__ */
+            sockets_err("setsockopt: nodelay");
+           }
+#endif /* TCP_NODELAY */
+         if (connect(fd, SOCKADDR_CAST &sinhim, sizeof(sinhim) ) < 0) 
+         sockets_err("connect");
+       }/* if (trans) */ 
+     else 
+       {/* otherwise, we are the server and should listen for connections */
+
+errno = 0;
+
+#if defined(sgi) || ( defined(__osf__) && !defined(_CFE) )
+        if( listen(fd,1) <0 )   
+#else
+        if( listen(fd,0) <0 )   /* allow a queue of 0 */
+#endif
+        sockets_err("listen");
+
+        if(options) {
+          int err;
+#if defined(BSD42)
+          err = setsockopt(fd, SOL_SOCKET, options, 0, 0);
+#elif defined(__lynx__) || defined(__sun__) || defined(__NTVIS__)
+          err = setsockopt(fd, SOL_SOCKET, options, (char *) &one, sizeof(one));
+#else
+          err = setsockopt(fd, SOL_SOCKET, options, &one, sizeof(one));
+#endif /* BSD42 */
+          if (err < 0)
+            sockets_err("setsockopt");
+        }
+        fromlen = sizeof(frominet);
+        domain = AF_INET;
+ if (timeout > 0) {
+   fd_set readfds, exceptfds;
+   struct timeval tv_timeout;
+   int n;
+   
+   tv_timeout.tv_sec = timeout/1000;
+   tv_timeout.tv_usec = (timeout%1000)*1000;
+   
+   FD_ZERO(&readfds);
+   FD_ZERO(&exceptfds);
+   FD_SET(fd, &readfds);
+   FD_SET(fd, &exceptfds);
+   
+   n =  select( fd+1, &readfds, NULL, &exceptfds, &tv_timeout );
+   if (n == 0 || n == SOCKET_ERROR) {
+     sockets_err("select listen");
+     return 0;
+   } 
+ }
+        if((fd=accept(fd, SOCKADDR_CAST &frominet, &fromlen) ) < 0) 
+                sockets_err("accept");
+
+        if (getpeername(fd, SOCKADDR_CAST &peer, &peerlen) < 0)
+          sockets_err("getpeername");
+         
+        fprintf(stderr,"ttcp-r: accept from %s\n",inet_ntoa(peer.sin_addr));
+
+       } /* otherwise we are ... */
+   }
+
+ prep_timer();
+ errno = 0;
+ nbytes = 0.0;
+ numCalls = 0;
+
+ {
+   register int cnt,multi;
+   char *pb;
+   int nb = 0;
+   unsigned long rbuflen = 0;
+   multi = nbuf;
+
+   if (trans) {
+#if !defined(BSD43)
+     if(udp) {
+       int err;
+       int nochecksum_opt = 0;
+       err = setsockopt(fd, IPPROTO_UDP, UDP_NOCHECKSUM,
+                        (char *)&nochecksum_opt, sizeof(nochecksum_opt));
+       if (err < 0)
+         sockets_err("setsockopt");
+     }
+#endif
+     
+     if(udp && !no_start) {
+       int start_count = 2;
+       char start_pkt[START_PKT_LEN];
+       memset(start_pkt, 0, START_PKT_LEN);
+       memcpy(start_pkt, start_pattern, START_PATTERN_LEN);
+
+       while (start_count-- > 0) {
+         (void)Nwrite( fd, start_pkt, START_PKT_LEN ); /* rcvr start */
+         if (udpsleep) {
+           usleep(udpsleep);
+           /* clear errno (see man page for errno(3), definition of
+              EINTR.  usleep() uses SIGCONT? ) */
+           if (errno == EINTR) errno = 0;
+         } /* udpsleep */
+       }
+     }
+
+     /* initial seqence num for UDP */
+     if (udp) buf[0] = 0;
+     k = burstn;
+
+     if (sinkmode) {
+       while (multi-- > 0 && !no_data) {
+
+         if (bufmin == -1) {
+           rbuflen = buflen;
+         } else {
+           /* set rbuflen to a random value evenly distributed in 
+              [bufmin, buflen].  As long as buflen is < 2^16, we can 
+              fit the calculation in 32 bits */
+#if defined(__NTVIS__)
+           rbuflen = (( (unsigned long)rand() *
+                        ((unsigned long)(buflen-bufmin+1)) ) >> 15) + bufmin;
+#else /* ! __NTVIS__ */
+           rbuflen = (( ((unsigned long)random() >> 15) *
+                        ((unsigned long)(buflen-bufmin+1)) ) >> 16) + bufmin;
+#endif /* __NTVIS__ */
+         }
+
+         if (rndm) {
+           unsigned int i, j, l;
+           unsigned long data;
+           
+           if (udp)
+             l = 1;
+           else
+             l = 0;
+
+           for (i = l; i < rbuflen; /* null */) {
+#if defined(__NTVIS__)
+             data = (unsigned long)rand();
+#else /* ! __NTVIS__ */
+             data = (unsigned long)random();
+#endif /* __NTVIS__ */
+             /*fprintf(stderr, "%08x\n",data);*/ /* DEBUG */
+             /* The NT rand() function returns only 16 useful bits! */
+             for (j = 0; (j < 2/*4*/) && (i < rbuflen) ; j++) {
+               buf[i++] = (unsigned char)(data & 0xff);
+               data >>= 8;
+             }
+           }
+         }
+         
+         if ((cnt=Nwrite(fd,buf,rbuflen)) != (int)rbuflen)
+         sockets_err("error from the socket write");
+         /* increment sequence num if UDP */
+         if (udp) buf[0] = (char)(((unsigned char)(buf[0])+1) & 0xFF);
+         
+         if (debug)
+           fprintf(stdout,"ttcp-t: %5d | %d Bytes Written in %d write commands \n",
+                   ++nb, cnt, nbuf );
+
+         nbytes += rbuflen;
+
+         /* hashes */
+         if (hash) {
+           fprintf(stderr,"#");
+         }
+
+         /* Check for the end of a burst */
+         if (--k <= 0) {
+           k = burstn;
+           
+           /* sleep to avoid overrunning slower receivers - henry */
+           if (udpsleep) {
+             usleep(udpsleep);
+             /* clear errno (see man page for errno(3), definition of
+              EINTR.  usleep() uses SIGCONT? ) */
+             if (errno == EINTR) errno = 0;
+           } /* udpsleep */
+         }
+       } /* while */
+
+     } /* if (sinkmode) */
+     else 
+     {
+
+       nbuf = 0;
+
+       if (bufmin == -1) {
+         rbuflen = buflen;
+       } else {
+         /* set rbuflen to a random value evenly distributed in 
+            [bufmin, buflen].  As long as buflen is < 2^16, we can 
+            fit the calculation in 32 bits */
+#if defined(__NTVIS__)
+         rbuflen = (( (unsigned long)rand() *
+                      ((unsigned long)(buflen-bufmin+1)) ) >> 15) + bufmin;
+#else /* ! __NTVIS__ */
+         rbuflen = (( ((unsigned long)random() >> 15) *
+                      ((unsigned long)(buflen-bufmin+1)) ) >> 16) + bufmin;
+#endif /* __NTVIS__ */
+       }
+
+       if (udp)
+         pb = &(buf[1]);
+       else
+         pb = &(buf[0]);
+
+#if !defined(__NTVIS__)     /* else case specific to WINNT */
+       while((cnt=read(0,pb,rbuflen)) > 0)
+#else /* __NTVIS__ */
+       while((cnt=(int)fread(pb,1,rbuflen,stdin)) > 0)
+#endif /* __NTVIS__ */
+        {
+
+         if (udp)
+           multi = cnt+1; /* don't include seq. num. in count of data */
+         else
+           multi = cnt;
+         if ((cnt=Nwrite(fd,buf,multi)) != (int)multi)
+           sockets_err("error from the socket write");
+         /* increment seqence num if UDP */
+         if (udp) buf[0] = (char)(((unsigned char)(buf[0])+1) & 0xFF);
+         nbuf++;
+
+         if (debug)
+           fprintf(stdout,"ttcp-t: %5d | %d Bytes Written in %d write commands \n",
+                   ++nb, cnt, nbuf );
+
+         nbytes += multi;
+
+         /* hashes */
+         if (hash) {
+           fprintf(stderr,"#");
+         }
+
+         /* Check for the end of a burst */
+         if (--k <= 0) {
+           k = burstn;
+           
+           /* sleep to avoid overrunning slower receivers - henry */
+           if (udpsleep) {
+             usleep(udpsleep);
+             /* clear errno (see man page for errno(3), definition of
+              EINTR.  usleep() uses SIGCONT? ) */
+             if (errno == EINTR) errno = 0;
+           } /* udpsleep */
+         }
+
+         if (bufmin == -1) {
+           rbuflen = buflen;
+         } else {
+           /* set rbuflen to a random value evenly distributed in 
+              [bufmin, buflen].  As long as buflen is < 2^16, we can 
+              fit the calculation in 32 bits */
+#if defined(__NTVIS__)
+           rbuflen = (( (unsigned long)rand() *
+                        ((unsigned long)(buflen-bufmin+1)) ) >> 15) + bufmin;
+#else /* ! __NTVIS__ */
+           rbuflen = (( ((unsigned long)random() >> 15) *
+                        ((unsigned long)(buflen-bufmin+1)) ) >> 16) + bufmin;
+#endif /* __NTVIS__ */
+         }
+
+       } /* while */
+
+     } /* if (sinkmode) */
+     
+     if (hash) {
+       fprintf(stderr,"\n");
+       fflush(stderr);
+     }
+     
+#if defined(UNDER_CE)
+	 errno = WSAGetLastError();
+#endif
+     if (!errno) {
+       read_timer();
+       if(udp && !no_end) {
+         int end_count = 4;
+         int data_count = nbuf;
+         char end_pkt[END_PKT_LEN];
+         unsigned char* net_byte = &end_pkt[END_PATTERN_LEN];
+         memset(end_pkt, 0, END_PKT_LEN);
+         memcpy(end_pkt, end_pattern, END_PATTERN_LEN);
+         net_byte[3] = data_count & 0xFF; data_count >>= 8;
+         net_byte[2] = data_count & 0xFF; data_count >>= 8;
+         net_byte[1] = data_count & 0xFF; data_count >>= 8;
+         net_byte[0] = data_count & 0xFF;
+         
+         while (end_count-- > 0) {
+           Nwrite( fd, end_pkt, END_PKT_LEN ); /* rcvr end */
+           if (udpsleep && end_count>0) usleep(udpsleep);
+         }
+       }
+       result_summary();
+     }
+   } /* trans */ 
+   else 
+   {
+       if (udp) {
+         udp_rcv_test();
+       }
+       else 
+       {/* not udp received transfer */
+         while ((cnt=Nread(fd,buf,buflen)) > 0)
+           {if(debug)fprintf(stdout,
+                            "ttcp%s: %5d | %d Bytes Read\n",
+                            trans?"-t":"-r", ++nb, cnt );
+           nbytes += cnt;
+           if (!sinkmode) {
+#if !defined(__NTVIS__)     /* else case specific to WINNT */
+             if (write(1,buf,cnt) != cnt) err("write");
+#else /* __NTVIS__ */
+             if ((int)fwrite(buf,1,cnt,stdout) != cnt) err("fwrite");
+#endif /* __NTVIS__ */
+           }
+         }
+#if defined(UNDER_CE)
+		 errno = WSAGetLastError();
+#endif
+         if (!errno) {
+           read_timer();
+           result_summary();
+         }
+       }
+     }
+   }
+
+ if(errno) err("IO");
+
+#if defined(__NTVIS__) 
+  closesocket ( fd );
+#else 
+  close ( fd );
+#endif /* __NTVIS__ */
+
+  if (verbose) fprintf(stdout,"ttcp%s: File-Descriptor  fd 0x%x Closed\n" ,
+                       trans?"-t":"-r", fd );
+
+  if (log_cnt) close_log();
+
+  fprintf(stderr,"ttcp done.\n");
+  fflush(stdout);
+
+  exit(0);
+}
+/*--------------------------------------------------------------------------*/
+void
+udp_rcv_test(void)
+{
+  enum {START_WAIT, DATA_WAIT, DATA_RCV, END_TEST} rcv_state;
+  enum {START_PKT_TYPE, END_PKT_TYPE, DATA_PKT_TYPE} pkt_type;
+  int cnt;
+  int nbuffers = 0;
+  unsigned int start_pkt_cnt = 0;
+  unsigned int end_pkt_cnt = 0;
+  unsigned int data_pkt_cnt = 0;
+  unsigned int expected_pkt_cnt = 0;
+  unsigned char seq = 0;
+  unsigned char buf_seq;
+  
+  rcv_state = START_WAIT;
+  while (rcv_state != END_TEST && (cnt=Nread(fd,buf,buflen)) > 0) {
+    /* Determine the type of packet received */
+    if (!memcmp(buf, start_pattern, START_PATTERN_LEN)) {
+      pkt_type = START_PKT_TYPE;
+      start_pkt_cnt++;
+    } else if (!memcmp(buf, end_pattern, END_PATTERN_LEN)) {
+      /* read the expected data packet count from the end packet */
+      unsigned char* net_byte = buf;
+      net_byte += END_PATTERN_LEN;
+      expected_pkt_cnt = ((net_byte[0] << 24) + (net_byte[1] << 16) +
+                          (net_byte[2] << 8) + net_byte[3]);
+      pkt_type = END_PKT_TYPE;
+      end_pkt_cnt++;
+    } else {
+      data_pkt_cnt++;
+      pkt_type = DATA_PKT_TYPE;
+    }
+           
+    if (rcv_state == START_WAIT) {
+      /* Wait until we see a vaild start packet */
+      if (pkt_type == START_PKT_TYPE) {
+        prep_timer();
+        rcv_state = DATA_WAIT;
+      } else if (pkt_type == DATA_PKT_TYPE) {
+        fprintf(stderr, "ERROR: Missed UDP start packet.\n");
+        prep_timer();
+        rcv_state = DATA_RCV;
+      } else if (pkt_type == END_PKT_TYPE) {
+        fprintf(stderr, "ERROR: Found UDP end packet before start packet or data.\n");
+        rcv_state = END_TEST;
+      }
+    } else if (rcv_state == DATA_WAIT) {
+      /* Skip any extra start packets until we see data */
+      if (pkt_type == START_PKT_TYPE) {
+        prep_timer();
+      } else if (pkt_type == DATA_PKT_TYPE) {
+        rcv_state = DATA_RCV;
+      } else if (pkt_type == END_PKT_TYPE) {
+        fprintf(stderr, "ERROR: Found UDP end packet without receiving "
+                "any data packets.\n");
+        rcv_state = END_TEST;
+      }
+    } else { /* DATA_RCV */
+      /* Collect data packets until we see a vaild end packet */
+      if (pkt_type == START_PKT_TYPE) {
+        /* We missed the end packets and now a new test is
+         * starting. Report the results of this test then start
+         * another. */
+        read_timer();
+        result_summary();
+        fprintf(stderr, "ERROR: Found UDP start packet while receiving data.\n"
+                "ERROR: Expected more data packets or an end packet.\n");
+        nbytes = 0.0;
+        nbuffers = 0;
+        numCalls = 0;
+        prep_timer();
+        rcv_state = DATA_WAIT;
+      } else if (pkt_type == DATA_PKT_TYPE) {
+        /* loop in this state */
+      } else if (pkt_type == END_PKT_TYPE) {
+        /* we used to print results here but now we do when the loop ends */
+        rcv_state = END_TEST;
+      }
+    }
+    
+    /* tally data packets the same way from whatever state we are in */
+    if (pkt_type == DATA_PKT_TYPE) {
+      if (debug)
+        fprintf(stderr, "ttcp-r: %5d | %d Bytes Read\n", ++nbuffers, cnt);
+      nbytes += cnt;
+      if (seq_info) {
+        /* check seqence num */
+        buf_seq = (unsigned char)(buf[0]);
+        if (buf_seq != seq) {
+          fprintf(stderr, "ERROR: Out of sequence. "
+                  "Buffer %u, seq %u, expected %u\n",
+                  data_pkt_cnt, buf_seq, seq);
+          seq = buf_seq;
+        }
+        seq++;
+      }
+      if (!sinkmode) {
+#if !defined(__NTVIS__)     /* else case specific to WINNT */
+        if (write(1,&(buf[1]),cnt-1) != cnt-1) err("write");
+#else /* __NTVIS__ */
+        if ((int)fwrite(&(buf[1]),1,cnt-1,stdout) != cnt-1) err("fwrite");
+#endif /* __NTVIS__ */
+      }
+    }
+  } /* end-while */
+
+  /* normal end of test */
+  read_timer();
+  result_summary();
+  fprintf(stderr, "ttcp-r: packets %u data, %u start, %u end\n",
+          data_pkt_cnt, start_pkt_cnt, end_pkt_cnt);
+  if (expected_pkt_cnt != 0) {
+    int lost_cnt = expected_pkt_cnt - data_pkt_cnt;
+
+    fprintf(stderr, "ttcp-r: %g%% (%u/%u) packet loss\n",
+            100.0 * (double)lost_cnt/(double)expected_pkt_cnt,
+            lost_cnt, expected_pkt_cnt);
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+/* calc_cpu_time(): Time difference, in usecs, of the combined user and
+ * sys times of the given start and end usage info */
+double
+calc_cpu_time(
+  struct rusage *r0,
+  struct rusage *r1
+)
+{
+  double time;
+  time_t ms;
+  struct timeval tdiff, tend, tstart;
+    
+  /* total user delta time + total system delta time */
+  tvadd( &tend, &r1->ru_utime, &r1->ru_stime );   /* user + sys time  @ end */
+  tvadd( &tstart, &r0->ru_utime, &r0->ru_stime ); /* user + sys time  @ start*/
+  tvsub( &tdiff, &tend, &tstart );
+
+  /* useconds */
+  time = ((double)tdiff.tv_sec)*1e6 + (double)tdiff.tv_usec;
+
+  /* debug mseconds */
+  ms = tdiff.tv_sec*(time_t)1000 + tdiff.tv_usec/(time_t)1000;
+  if (ms != (time_t)(time/1000.0)) {
+    fprintf(stderr, "ERROR: time calc mismatch of msec (%d) to usec (%f)\n",
+            (int)ms, time/1000.0);
+  }
+
+  return time;
+}
+
+/*--------------------------------------------------------------------------*/
+/* calc_real_time(): Time difference in usecs of the given times */
+double
+calc_real_time(
+  struct timeval *t0,
+  struct timeval *t1
+)
+{
+  double time;
+  time_t ms;
+  struct timeval tdiff;
+    
+  tvsub(&tdiff, t1 ,t0);
+
+  /* useconds */
+  time = ((double)tdiff.tv_sec)*1e6 + (double)tdiff.tv_usec;
+  
+  /* debug mseconds */
+  ms = tdiff.tv_sec*(time_t)1000 + tdiff.tv_usec/(time_t)1000;
+  if (ms != (time_t)(time/1000.0)) {
+    fprintf(stderr, "ERROR: time calc mismatch of msec (%d) to usec (%f)\n",
+            (int)ms, time/1000.0);
+  }
+
+  return time;
+}
+/*--------------------------------------------------------------------------*/
+void
+result_summary(void)
+{
+  char* label = trans ? "ttcp-t" : "ttcp-r";
+  double cput = calc_cpu_time(&ru0, &ru1);
+  double realt = calc_real_time(&time0, &time1);
+  double t_min;
+  double bytes_per_sec;
+
+  /* lower end boundary conditions */
+  t_min = 10.0;                 /* 10 usec */
+#if  defined(__NTVIS__)
+  t_min = 1000.0;               /* 1 msec */
+#endif
+  if (cput <= t_min) {          /* value in usec */
+    cput = t_min;
+    fprintf(stderr,"%s: cpu time too short set at %.0f usec, NOT accurate result.\n",
+            label,t_min);
+  }
+  if (realt <= t_min) {         /* value in usec */
+    realt = t_min;
+    fprintf(stderr,"%s: real time too short, set at %.0f usec, NOT accurate result.\n",
+            label,t_min);
+  }
+
+  bytes_per_sec = (nbytes/realt)*1e6;
+
+  fprintf(stderr,"%s: %.0f bytes in %.06f real seconds = %s/sec +++\n",
+          label, nbytes, realt/1e6, outfmt(fmt, bytes_per_sec));
+
+  if (verbose)
+    fprintf(stderr,"%s: %.0f bytes in %.06f cpu  seconds = %s/cpu sec\n",
+            label, nbytes,cput/1e6, outfmt(fmt, (nbytes/cput)*1e6));
+
+  fprintf(stderr,"%s: %ld I/O calls, %.3f msec(real)/call, %.3f msec(cpu)/call\n",
+          label, numCalls,
+          (numCalls>0)?(realt/(double)numCalls)/1000.0:0.0,
+          (numCalls>0)?(cput /(double)numCalls)/1000.0:0.0);
+
+  fprintf(stderr,"%s: ", label);
+  prusage(&ru0, &ru1, &time0, &time1);
+  fprintf(stderr,"\n");
+
+  if (verbose)
+    printf("%s: buffer address %#x\n", label, (unsigned int)buf);
+
+  if (fplog) {
+    struct timeval tdiff;
+    /* User time */
+    tvsub(&tdiff, &ru1.ru_utime, &ru0.ru_utime);
+    fprintf(fplog," %ld.%06ld", (long)tdiff.tv_sec, (long)tdiff.tv_usec);
+    /* System time */
+    tvsub(&tdiff, &ru1.ru_stime, &ru0.ru_stime);
+    fprintf(fplog," %ld.%06ld", (long)tdiff.tv_sec, (long)tdiff.tv_usec);
+    /* Percent of cput usage */
+    fprintf(fplog," %.1f", 100.0 * (cput/realt));
+    /* validity of real time mesurment */
+    fprintf(fplog, (realt == t_min)?" 0":" 1");
+    /* bytes, seconds, MBytes/sec, IO calls */
+    fprintf(fplog," %10.0f %4.06f %4.3f %6ld",
+            nbytes, realt/1e6, bytes_per_sec/(1024.0*1024.0), numCalls);
+  }
+}
+/*--------------------------------------------------------------------------*/
+void
+sockets_err(char* s)
+{
+#if defined(__NTVIS__)
+  int err = WSAGetLastError();
+  char* prefix = trans?"ttcp-t":"ttcp-r";
+  fprintf(stderr,"%s: %s\n", prefix, s);
+  fprintf(stderr,"%s: errno=%d\n", prefix, err);
+  exit(1);
+#else
+  err(s);
+#endif /* __NTVIS__ */
+}
+
+/*--------------------------------------------------------------------------*/
+void
+err(char *s)
+{
+  char* prefix = trans?"ttcp-t":"ttcp-r";
+  fprintf(stderr,"%s: ", prefix);
+  perror(s);
+  fprintf(stderr,"%s: errno=%d\n", prefix, errno);
+  exit(1);
+}
+/*--------------------------------------------------------------------------*/
+void
+mes(char *s)
+{
+        fprintf(stderr,"ttcp%s: %s\n", trans?"-t":"-r", s);
+}
+/*--------------------------------------------------------------------------*/
+void
+pattern( char *cp, int cnt )
+{
+        register char c;
+        register int cnt1;
+        cnt1 = cnt;
+        c = 0;
+        while( cnt1-- > 0 )  {
+                while( !isprint((c&0x7F)) )  c++;
+                *cp++ = (c++&0x7F);
+        }
+}
+/*--------------------------------------------------------------------------*/
+char *
+outfmt(char format, double b)
+{
+  static char obuf[50];
+  double giga = 1024.0 * 1024.0 * 1024.0;
+  double mega = 1024.0 * 1024.0;
+  double kilo = 1024.0;
+  
+  if (format == 'A') {
+    if (b >= giga)
+      format = 'G';
+    else if (b >= mega)
+      format = 'M';
+    else if (b >= kilo)
+      format = 'K';
+    else
+      format = 'B';
+  }
+
+  switch (format) {
+  case 'G':
+    sprintf(obuf, "%.3f GB", b / giga);
+    break;
+  case 'M':
+    sprintf(obuf, "%.3f MB", b / mega);
+    break;
+  case 'K':
+    sprintf(obuf, "%.3f KB", b / kilo);
+    break;
+  case 'B':
+    sprintf(obuf, "%4f B", b);
+    break;
+  case 'g':
+    sprintf(obuf, "%.3f Gbit", b * 8.0 / giga);
+    break;
+  case 'm':
+    sprintf(obuf, "%.3f Mbit", b * 8.0 / mega);
+    break;
+  case 'k':
+    sprintf(obuf, "%.3f Kbit", b * 8.0 / kilo);
+    break;
+  case 'b':
+    sprintf(obuf, "%4f b", b * 8.0);
+    break;
+  default:
+    sprintf(obuf, "default.........."); 
+  }
+  return obuf;
+}
+/*--------------------------------------------------------------------------*/
+#if defined(SYSV)
+
+/*ARGSUSED*/
+
+#if defined(__osf__)
+/* getrusage defined in the system lib */
+#else 
+#if defined(__lynx__)
+/* getrusage defined in the system lib */
+#else 
+#if defined(__sun__) 
+/* getrusage defined in the system lib */
+#else 
+
+int
+getrusage(ignored, ru)
+     int ignored;
+     register struct rusage *ru;
+{
+
+
+#if defined(__NTVIS__)
+  HANDLE phd;
+  FILETIME CreateTime, ExitTime, KernelTime, UserTime;
+  SYSTEMTIME SysTime;
+#if defined(UNDER_CE)
+  phd = GetCurrentThread();
+  if( GetThreadTimes(phd, &CreateTime, &ExitTime, &KernelTime, &UserTime) 
+      != TRUE) 
+#else
+  phd = GetCurrentProcess();
+  if( GetProcessTimes(phd, &CreateTime, &ExitTime, &KernelTime, &UserTime) 
+      != TRUE) 
+#endif
+    {ru->ru_stime.tv_sec  = 0;
+    ru->ru_stime.tv_usec = 0;
+    ru->ru_utime.tv_sec  = 0;
+    ru->ru_utime.tv_usec = 0;
+    } 
+  else 
+   {
+     (void) FileTimeToSystemTime(&KernelTime, &SysTime);
+     /*
+      * fprintf(stdout,
+      * "System sec=%d, msec=%d\n", SysTime.wSecond, SysTime.wMilliseconds);
+      */
+     ru->ru_stime.tv_sec  = SysTime.wSecond; 
+     ru->ru_stime.tv_usec = SysTime.wMilliseconds * 1000;
+     (void) FileTimeToSystemTime(&UserTime, &SysTime);
+     /*
+      *  fprintf(stdout,
+      *  "   User sec=%d, msec=%d\n", SysTime.wSecond, SysTime.wMilliseconds);
+      */
+     ru->ru_utime.tv_sec  = SysTime.wSecond;
+     ru->ru_utime.tv_usec = SysTime.wMilliseconds * 1000;
+    }
+
+#else   /* __NTVIS__ */
+
+  struct tms buftime;
+  times(&buftime);
+  /* Assumption: HZ <= 2147 (LONG_MAX/1000000) */
+  /* info : in lynxOS HZ is called TICKSPERSEC (<conf.h>) */
+
+    ru->ru_stime.tv_sec  = buftime.tms_stime / HZ;
+    ru->ru_stime.tv_usec = ((buftime.tms_stime % HZ) * 1000000) / HZ;
+    ru->ru_utime.tv_sec  = buftime.tms_utime / HZ;
+    ru->ru_utime.tv_usec = ((buftime.tms_utime % HZ) * 1000000) / HZ;
+#endif /* __NTVIS__ */
+return(0);
+
+} /* static getrusage */
+
+#endif /* __sun__ */
+#endif /* __lynx__ */
+#endif /* __osf__ */
+#endif /* SYSV */
+/*--------------------------------------------------------------------------*/
+#if defined(SYSV) 
+#if defined(__hpux__) || defined(_AIX) || defined(__sun__)
+/* gettimeofday defined in the system lib */
+#else
+# if defined (__osf__) ||defined (__lynx__)
+/* gettimeofday defined in the system lib */
+#else
+/*ARGSUSED*/
+static 
+gettimeofday(tp, zp)
+struct timeval *tp;
+struct timezone *zp;
+{
+#if defined(__NTVIS__)
+#if defined(UNDER_CE)
+	SYSTEMTIME SystemTime;
+
+	GetLocalTime(&SystemTime); 
+	tp->tv_sec = SystemTime.wSecond;
+	tp->tv_usec = SystemTime.wMilliseconds * 1000;
+#else
+  struct _timeb timeptr;
+
+  _ftime(&timeptr);
+  tp->tv_sec = timeptr.time;
+  tp->tv_usec = timeptr.millitm * 1000;
+#endif
+#else /* all cases */
+  tp->tv_sec = time(0);
+  tp->tv_usec = 0;
+#endif /* __NTVIS__ */
+return(1);
+} /* static gettimeofday */
+
+#endif /*__osf__ || __lynx__ */
+#endif /* __hpux__ || _AIX || __sun__ || __osf__*/
+#endif /* SYSV */
+/*--------------------------------------------------------------------------*/
+/*
+ *                        P R E P _ T I M E R
+ */
+void
+prep_timer(void)
+{
+  gettimeofday(&time0, (struct timezone *)0);
+  getrusage(RUSAGE_SELF, &ru0);
+}
+/*--------------------------------------------------------------------------*/
+/*
+ *                        R E A D _ T I M E R
+ * 
+ */
+void
+read_timer(void)
+{
+  getrusage(RUSAGE_SELF, &ru1);
+  gettimeofday(&time1, (struct timezone *)0);
+}
+/*--------------------------------------------------------------------------*/
+/*         Print the process usage calculated from timers values extracted 
+ *         before and after the transfer execution.
+ */
+void
+prusage(
+  struct rusage *r0, struct rusage *r1,
+  struct timeval *t0, struct timeval *t1
+)
+{
+  struct timeval tdiff;
+  int t, ms;
+  register char *cp;
+  double cput = calc_cpu_time(r0, r1);
+  double realt = calc_real_time(t0, t1);
+
+  /* t == total user delta time + total system delta time */
+  if (debug)   
+  { 
+    printf("timers     : end          startup\n");
+    printf("user (sec) : %9ld  %9ld\n",r1->ru_utime.tv_sec, 
+           r0->ru_utime.tv_sec);
+    printf("user (usec): %9ld  %9ld\n",r1->ru_utime.tv_usec, 
+           r0->ru_utime.tv_usec);
+    printf("sys  (sec) : %9ld  %9ld\n",r1->ru_stime.tv_sec, 
+           r0->ru_stime.tv_sec);
+    printf("sys  (usec): %9ld  %9ld\n",r1->ru_stime.tv_usec, 
+           r0->ru_stime.tv_usec);
+    printf("time (sec) : %9ld  %9ld\n",t1->tv_sec,t0->tv_sec);
+    printf("time (usec): %9ld  %9ld\n",t1->tv_usec,t0->tv_usec);
+  }
+  /* for the AIX debug, most counters are outside a good range  
+    printf("                               r0                   r1\n");
+    printf("ru_ixrss    %20ld %20ld \n", r0->ru_ixrss  ,r1->ru_ixrss  );    
+    printf("ru_idrss    %20ld %20ld \n", r0->ru_idrss  ,r1->ru_idrss  );    
+    printf("ru_isrss    %20ld %20ld \n", r0->ru_isrss ,r1->ru_isrss );  
+    printf("ru_minflt   %20ld %20ld \n", r0->ru_minflt  ,r1->ru_minflt  );   
+    printf("ru_majflt   %20ld %20ld \n", r0->ru_majflt  ,r1->ru_majflt  );   
+    printf("ru_nswap    %20ld %20ld \n", r0->ru_nswap  ,r1->ru_nswap  );    
+    printf("ru_inblock  %20ld %20ld \n", r0->ru_inblock  ,r1->ru_inblock );  
+    printf("ru_oublock  %20ld %20ld \n", r0->ru_oublock  ,r1->ru_oublock  );  
+    printf("ru_msgsnd   %20ld %20ld \n", r0->ru_msgsnd  ,r1->ru_msgsnd  );   
+    printf("ru_msgrcv   %20ld %20ld \n", r0->ru_msgrcv  ,r1->ru_msgrcv   );   
+    printf("ru_nsignals %20ld %20ld \n", r0->ru_nsignals  ,r1->ru_nsignals); 
+    printf("ru_nvcsw    %20ld %20ld \n", r0->ru_nvcsw   ,r1->ru_nvcsw   );    
+    printf("ru_nivcsw   %20ld %20ld \n", r0->ru_nivcsw  ,r1->ru_nivcsw  );   
+  */
+
+  /* cpu time in mseconds */
+  t = (int)(cput / 1000.0);
+
+  /* ms == value of the internal clock at the end of the xfer   */      
+  /*                             also called real time.         */
+  /* real time in mseconds */
+  ms = (int)(realt / 1000.0);
+
+  /* The display is based on variables provided by the function getrusage 
+     Info located in : /usr/include/sys/resource.h  
+  */                       
+#if defined(SYSV)
+
+#if defined(_AIX)
+  /* with AIX cernsp most counters are wrong  
+   * cp = "%Uuser %Ssys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Ccsw\0";
+   */
+  cp = "%Uuser %Ssys %Ereal %P\0";
+
+#else 
+#if defined(__osf__)
+  cp = "%Uuser %Ssys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Ccsw\0";
+#else
+#if defined(sgi)                        /* IRIX 3.3 will show 0 for %M,%F,%R,%C */
+  cp = "%Uuser %Ssys %Ereal %P %Mmaxrss %F+%Rpf %Ccsw\0";
+#else 
+#if defined(__Lynx__)
+  cp = "%Uuser %Ssys %Ereal %P\0";
+#else 
+  cp = "%Uuser %Ssys %Ereal %P\0";    /* all SYSV except those mentionned */
+#endif /*__lynx__ */
+#endif /* sgi     */
+#endif /*__osf__  */
+#endif /* _AIX    */
+
+#else  /* BSD system */
+  cp = "%Uuser %Ssys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Ccsw\0"; 
+
+#endif /* SYSV    */
+
+  for (; *cp; cp++) {
+    if (*cp != '%') {
+      putc(*cp, stderr);
+      /*  *outp++ = *cp; */
+    } else if (cp[1]) 
+      switch(*++cp) {
+      case 'U':
+        tvsub(&tdiff, &r1->ru_utime, &r0->ru_utime);
+        fprintf(stderr,"%ld.%06ld", (long)tdiff.tv_sec, (long)tdiff.tv_usec);
+        break;
+
+      case 'S':
+        tvsub(&tdiff, &r1->ru_stime, &r0->ru_stime);
+        fprintf(stderr,"%ld.%06ld", (long)tdiff.tv_sec, (long)tdiff.tv_usec);
+        break;
+
+      case 'E':
+        psecs( ms / 1000);
+        break;
+
+      case 'P':
+        fprintf(stderr,"%.1f%%", (cput*100.0 / (realt ? realt : 1.0)) );
+        break;
+
+#if !defined(SYSV) || defined(__osf__) || defined(_AIX)
+      case 'W':
+        {
+          int i = r1->ru_nswap - r0->ru_nswap;
+          fprintf(stderr,"%d", i);
+          break;
+        }
+            
+      case 'X':
+        fprintf(stderr,"%ld", t == 0 ? 0 : (r1->ru_ixrss-r0->ru_ixrss)/t);
+        break;
+
+      case 'D':
+        fprintf(stderr,"%ld", t == 0 ? 0 :
+                (r1->ru_idrss+r1->ru_isrss - (r0->ru_idrss+r0->ru_isrss))/t);
+        break;
+
+      case 'K':
+        fprintf(stderr,"%ld", t == 0 ? 0 :
+                ((r1->ru_ixrss+r1->ru_isrss+r1->ru_idrss) -
+                 (r0->ru_ixrss+r0->ru_idrss+r0->ru_isrss))/t);
+        break;
+
+      case 'M':
+        fprintf(stderr,"%ld", r1->ru_maxrss/2);
+        break;
+  
+      case 'F':
+        fprintf(stderr,"%ld", r1->ru_majflt-r0->ru_majflt);
+        break;
+
+      case 'R':
+        fprintf(stderr,"%ld", r1->ru_minflt-r0->ru_minflt);
+        break;
+
+      case 'I':
+        fprintf(stderr,"%ld", r1->ru_inblock-r0->ru_inblock);
+        break;
+
+      case 'O':
+        fprintf(stderr,"%ld", r1->ru_oublock-r0->ru_oublock);
+        break;
+
+      case 'C':
+        fprintf(stderr,"%ld+%ld",
+                r1->ru_nvcsw-r0->ru_nvcsw, r1->ru_nivcsw-r0->ru_nivcsw);
+        break;
+#endif /* !SYSV || __osf__ */
+      default:
+        putc(*cp, stderr);
+        break;
+      } /* switch */
+  } /* for */
+}
+/*--------------------------------------------------------------------------*/
+/* add 2 times structure and move usec bigger than 1000000 to sec */
+void              
+tvadd(tsum, t0, t1)
+     struct timeval *tsum, *t0, *t1;
+{
+  tsum->tv_sec = t0->tv_sec + t1->tv_sec;
+  tsum->tv_usec = t0->tv_usec + t1->tv_usec;
+  if (tsum->tv_usec > 1000000) tsum->tv_sec++, tsum->tv_usec -= 1000000;
+}
+/*--------------------------------------------------------------------------*/
+/* substract 2 time structure (t1 > t0) */
+void             
+tvsub(tdiff, t1, t0)
+     struct timeval *tdiff, *t1, *t0;
+{ 
+  tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
+  tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
+  if (tdiff->tv_usec < 0)  tdiff->tv_sec--, tdiff->tv_usec += 1000000;
+}
+
+/*--------------------------------------------------------------------------*/
+void          
+psecs(int l)
+{
+  int i = (int)l/3600;
+
+  if (i) {
+    /* hours:min:sec */
+    fprintf(stderr,"%d:", i);
+    i = (int)l % 3600;
+    fprintf(stderr,"%.2d:%.2d", i/60, i%60);
+  } else {
+    /* min:sec */
+    i = (int)l;
+    fprintf(stderr,"%d:%.2d", i/60, i%60);
+  }
+}
+/*--------------------------------------------------------------------------*/
+/*                        N R E A D                                           */
+
+int                          
+Nread(SOCKET s, void* bufp, int count )
+{
+#if defined(__lynx__) || defined(__svr4__) || defined(_AIX) || defined(__NTVIS__) || defined(__FreeBSD__)
+  struct sockaddr from;
+#else
+  struct sockaddr_in from;
+#endif
+  int len = sizeof(from);
+  register int cnt;
+
+  if (timeout > 0) {
+    fd_set readfds, exceptfds;
+    struct timeval tv_timeout;
+    int n;
+
+    tv_timeout.tv_sec = timeout/1000;
+    tv_timeout.tv_usec = (timeout%1000)*1000;
+
+    FD_ZERO(&readfds);
+    FD_ZERO(&exceptfds);
+    FD_SET(s, &readfds);
+    FD_SET(s, &exceptfds);
+
+    n =  select( s+1, &readfds, NULL, &exceptfds, &tv_timeout );
+    if (n == SOCKET_ERROR) {
+      sockets_err("select read");
+    } else if (n == 0) {
+      return (0);
+    }
+
+  }
+
+  if( udp )  
+    {cnt = recvfrom( s, bufp, count, 0, SOCKADDR_CAST &from, &len );
+    numCalls++;
+    } 
+  else 
+    {if( b_flag )  cnt = mread( s, bufp, count );        /* fill bufp */
+    else 
+      {
+#if defined(__NTVIS__)
+        cnt = recv( s, bufp, count, 0 );
+#else
+        cnt = read( s, bufp, count );
+#endif /* __NTVIS__ */
+        numCalls++;
+      }
+    if (touchdata && cnt > 0) 
+      {register int c = cnt, sum = 0;
+       register char *b = bufp;
+       while (c--) sum += *b++;
+      }
+    }
+  /* rchrch   printf (" numcall %d read buffer %d bytes \n",numCalls,cnt); */
+  return(cnt);
+}
+/*--------------------------------------------------------------------------*/
+/*                        N W R I T E                                         */
+
+int                                    
+Nwrite( int s, void* bufp, int count )
+{
+  register int cnt;
+  if( udp )  
+    {
+    again:
+      cnt = sendto( s, bufp, count, 0, SOCKADDR_CAST &sinhim,
+                                                sizeof(sinhim) );
+
+      numCalls++;
+
+#if defined(__NTVIS__)
+      if( cnt<0 && WSAENOBUFS == WSAGetLastError()) 
+#else
+      if( cnt<0 && errno == ENOBUFS )  
+#endif /* __NTVIS__ */
+
+        { delay(18000); errno = 0; goto again; }
+    }  else /* if (udp) */
+    {
+
+#if defined(__NTVIS__)
+      cnt = send( s, bufp, count, 0 );
+      numCalls++;
+#else
+      cnt = write( s, bufp, count );
+      numCalls++;
+#endif /* __NTVIS__ */
+    }        
+  return(cnt);
+}
+/*--------------------------------------------------------------------------*/
+void
+delay(us)
+int us;        
+{
+  struct timeval tv;
+
+  tv.tv_sec = 0;
+  tv.tv_usec = (time_t)us;
+
+#if defined(__hpux__)
+  select(1, 0, 0, 0, &tv); 
+#else
+  select(1, (fd_set *)0, (fd_set *)0, (fd_set *)0, &tv); 
+#endif
+}
+/*--------------------------------------------------------------------------*/
+/*                        M R E A D        
+ *
+ * This function performs the function of a read(II) but will
+ * call read(II) multiple times in order to get the requested
+ * number of characters.  This can be necessary because
+ * network connections don't deliver data with the same
+ * grouping as it is written with.  Written by Robert S. Miles, BRL.
+ */
+int
+mread(int s, char* bufp, unsigned n)
+{
+  register unsigned        count = 0;
+  register int                nread;
+  
+  do
+    {
+#if defined(__NTVIS__)
+     nread = recv(s, bufp, n-count, 0);
+#else
+     nread = read(s, bufp, n-count);
+#endif /* __NTVIS__ */
+     numCalls++;
+     if(nread < 0)  {perror("ttcp_mread"); return(-1); }
+     if(nread == 0)  return((int)count);
+     count += (unsigned)nread;
+     bufp += nread;
+    }while(count < n);
+  return((int)count);
+}
+
+/*--------------------------------------------------------------------------*/
+void
+open_log()
+{static long sysTicks;
+#if defined(UNDER_CE)
+	SYSTEMTIME SystemTime;
+#endif
+ sprintf(logfile,"%s_%s",logfile_head,trans?"t":"r");
+
+ fprintf(stderr,"open the log file >%s<\n",logfile);
+ if ((fplog = fopen(logfile,"r")) == NULL)    
+       
+   {if ((fplog = fopen(logfile,"a+")) == NULL)
+     {fprintf(stderr,"Failure : creation of the file >%s< \n",logfile );
+      exit(1);
+     }
+    else 
+     {fprintf(fplog," creation date : ");
+      /* get date */
+#if defined(UNDER_CE)
+	GetLocalTime(&SystemTime);
+	sprintf(fplog,"%02d-%02d-%02d %02d:%02d\n", SystemTime.wDay, month[SystemTime.wMonth - 1],
+		SystemTime.wYear, SystemTime.wHour, SystemTime.wMinute);
+#else
+      time(&sysTicks);
+      tms = localtime(&sysTicks);
+      fprintf(fplog,"%02d-%02d-%02d %02d:%02d\n",
+              tms->tm_mday, tms->tm_mon, tms->tm_year,tms->tm_hour, tms->tm_min);
+#endif
+
+      /* An other version will produce : Mon Aug  4 16:32:16 1997
+       * long  lDxcomsTicks;  char *pDateTime; 
+       * time(&lDxcomsTicks);
+       * pDateTime = ctime(&lDxcomsTicks);  *(pDateTime+24) = '\0';
+       * fprintf(fplog," ttcp called : %s", pDateTime);
+       */
+      fprintf(fplog,"format\n");
+      fprintf(fplog,",buflen, nbuf(byte), bufalign(byte), bufoffset(byte)");
+      fprintf(fplog,",  port, sockbufsize(byte), UserTime(sec), SysTime(sec)\n");
+      fprintf(fplog,",  CPUusage(%%), Validity, nbytes(byte), realt(sec)");
+      fprintf(fplog,",  rate(MB/sec), I/O call, hours*3600+min*60+sec\n\n");
+      /* day-month-year, hour:minute\n\n");  */
+    }
+  } /* file already exist */
+   else 
+   {fclose (fplog);
+     if ((fplog = fopen(logfile,"a+")) == NULL)     
+       {fprintf(stderr,"Failure : access of the file >%s< \n",logfile );
+        exit(1);
+           }
+   }
+} 
+/*--------------------------------------------------------------------------*/
+void
+close_log()
+{
+#if defined(UNDER_CE)
+	SYSTEMTIME SystemTime;
+
+	GetLocalTime(&SystemTime);
+	fprintf(fplog," %d\n", SystemTime.wHour * 3600 + SystemTime.wMinute * 60 + SystemTime.wSecond);
+#else
+ static long sysTicks;
+ time(&sysTicks);
+ tms = localtime(&sysTicks);
+ fprintf(fplog," %d\n",((tms->tm_hour)*3600 + (tms->tm_min)*60 + tms->tm_sec));
+#endif
+ fclose(fplog);
+ fflush(fplog);
+}
+/*--------------------------------------------------------------------------*/
+/* routine emulating UNIX function under NT */
+#if defined(__NTVIS__)
+
+/*---------------------------------------------------------------------------*/
+static void
+error(char *pch)
+{
+        if (!opterr) {
+                return;                // without printing
+        }
+        fprintf(stderr, "%s: %s: %c\n",
+                (NULL != progname) ? progname : "getopt", pch, optopt);
+}
+/*---------------------------------------------------------------------------*/
+int
+getopt(int argc, char **argv, char *ostr)
+{
+  static char *place = EMSG;    /* option letter processing */
+  register char *oli;           /* option letter list index */
+
+  if (!*place) {
+    // update scanning pointer
+    if (optind >= argc || *(place = argv[optind]) != '-' || !*++place) {
+      place = EMSG;
+      return -1; 
+    }
+    // place now points to the first char past the initial '-'
+    if (place[0] == '-') {
+      // found "--"
+      // Was the word just a '--'?
+      if (place[1] == '\0')
+        ++optind; // yes, so consume the word
+      // otherwise, the '--' was the start of a longer word,
+      // so do not consume it.
+      place = EMSG;
+      return -1;
+    }
+  }
+
+  /* option letter okay? */
+  if ((optopt = (int)*place++) == (int)':'
+      || !(oli = strchr(ostr, optopt))) {
+    if (!*place) {
+      ++optind;
+    }
+    error("illegal option");
+    return BADCH;
+  }
+  if (*++oli != ':') {        
+    /* don't need argument */
+    optarg = NULL;
+    if (!*place)
+      ++optind;
+  } else {
+    /* need an argument */
+    if (*place) {
+      optarg = place;                /* no white space */
+    } else  if (argc <= ++optind) {
+      /* no arg */
+      place = EMSG;
+      error("option requires an argument");
+      return BADCH;
+    } else {
+      optarg = argv[optind];                /* white space */
+    }
+    place = EMSG;
+    ++optind;
+  }
+  return optopt;                        // return option letter
+}
+
+void
+usleep(unsigned int microseconds)
+{
+  Sleep(microseconds/1000);
+}
+#endif /* __NTVIS__ */
+/*--------------------------------------------------------------------------*/
+/*--------------------------------------------------------------------------*/
+void
+do_help()
+{
+char More_help[] =
+" Details about the reply: \n"
+"   Example: \n"
+"   ttcp-t: buflen=8192, nbuf=100, align=16384/0, port=5010\n"
+"   ttcp-t: File-Descriptor 0x4 Opened\n"
+"   # tcp sender -> <host> #\n"
+"   ttcp-t: 819200 bytes in 1.152557 real seconds = 694.109 KB/sec +++\n"
+"   ttcp-t: 100 I/O calls, 11.526 msec(real)/call, 0.213 msec(cpu)/call\n"
+"   ttcp-t: 0.001914user 0.019388sys 0:01real 1% 9i+58d 190maxrss 1+2pf 177+180csw\n"
+"   ttcp-t: buffer address 0x28000\n"
+"   ttcp-t: File-Descriptor  fd 0x4 Closed\n"
+"   ttcp done.\n\n"
+"cpu seconds  ==  (sec) elapse ru_utime + elapse ru_stime.\n"
+"                 ru_utime == The total amount of time running in user mode.\n"
+"                 ru_stime == The total amount of time spent in the system.\n"
+"                             executing on behalf of the process.\n"
+"real seconds ==  elapse time calculated by the system timer (date).\n"
+"I/O calls    ==  I/O call to the driver.\n"
+"msec/call    ==  average elapse time (Real seconds) between each I/O.\n"
+"calls/sec    ==  invert of msec/call.\n"
+"user         ==  (sec.msec) elaspe ru_utime.\n"
+"sys          ==  (sec.msec) elapse ru_stime.\n"
+"real         ==  (min:sec)  CPU seconds.\n"
+"%%           ==  Real seconds / CPU seconds.\n"
+"(ru_ixrss)i+(ru_idrss)d\n"
+"             ru_ixrss  == An integral value indicating the amount of memory \n"
+"                          used by the text segment that was also shared among\n"
+"                          other processes. This value is expressed in units of\n"
+"                          kilobytes * seconds-of-execution and is calculated \n"
+"                          by adding the number of shared memory pages in use \n"
+"                          each time the internal system clock ticks, and then\n"
+"                          averaging over one-second intervals.\n"
+"             ru_idrss  == An integral value of the amount of unshared memory \n"
+"                          in the data segment of a process (expressed in \n"
+"                          units of kilobytes * seconds-of-execution).\n";
+ 
+char More_help1[] =
+"  (ru_maxrss/2)maxrss.\n"
+"             ru_maxrss == The maximum size, in kilobytes, of the used\n"
+"                          resident set size. \n"
+"  (ru_majflt)+(ru_minflt)pf : Page fault\n"
+"             ru_majflt == The number of page faults serviced that required\n"
+"                          I/O activity.\n"
+"             ru_minflt == The number of page faults serviced without any\n"
+"                          I/O activity. In this case, I/O activity is \n"
+"                          avoided by reclaiming a page frame from the list \n"
+"                          of pages awaiting reallocation. \n"
+"(ru_nvcsw)+(ru_nivcsw)csw : context switch\n"
+"             ru_nvcsw  == The number of times a context switch resulted \n"
+"                          because a process voluntarily gave up the \n"
+"                          processor before its time slice was completed. \n"
+"                          This usually occurs while the process waits \n"
+"                          for availability of a resource.\n"
+"             ru_nivcsw == The number of times a context switch resulted \n"
+"                          because a higher priority process ran or because\n"
+"                          the current process exceeded its time slice.\n\n";
+
+char More_help2[] =
+"log file format :\n"
+"         buflen, nbuf(byte), bufalign(byte), bufoffset(byte)\n"
+"         port, sockbufsize(byte), UserTime(sec), SysTime(sec), CPUusage(%)\n"
+"         nbytes(byte), realt(sec), rate(MB/sec), I/O call,\n"
+"                 hours*3600+min*60+sec\n\n";
+
+  fprintf(stderr,More_help);
+  fprintf(stderr,More_help1);
+  fprintf(stderr,More_help2);
+}
+/*---------------------------------------------------------------------------*/
+void
+do_Usage()
+{
+char Usage[] =
+"  Usage: ttcp -t [-options] host [ < in ]    ttcp -r [-options > out]\n"
+"Example: ttcp -t -s -v -n100 host            ttcp -r -s -v -n100\n"
+"Common options:\n"
+"    -V      prints version number and date of last modification\n"
+"    -L      create and append all results to a file named ttcp_log\n"
+"    -h      more help\n"
+"    -l ##   length of bufs read from or written to network (default 8192,\n"
+"            max 65535)\n"
+"    -u      use UDP instead of TCP\n"
+"    -p ##   port number to send to or listen at (default 5001)\n"
+#if defined(__linux__)
+"    -P ##   link-layer priority (default 0)\n"
+#endif
+"    -s      (ttcp -t) : source a pattern to network\n"
+"            (ttcp -r) : sink (discard) all data from network\n"
+"    -A ##   align the start of buffers to this modulus (default 16384)\n"
+"    -O ##   start buffers at this offset from the modulus (default 0)\n"
+"    -v      verbose: print more statistics\n"
+"    -d      set SO_DEBUG socket option\n"
+"    -b ##   set socket buffer size (if supported)\n"
+"    -f X    format for rate: b,B = bits, bytes k,K = kilo{bits,bytes};\n"
+"                             m,M = mega{bits,bytes}; g,G = giga{bits,bytes}\n"
+"    -w ##   set timeout value (in milliseconds) to exit if no receive data or tcp connect\n"
+"Options specific to (ttcp -t) :\n"
+"    -n ##   number of source bufs written to network (default 2048)\n"
+"    -x      use random data in tcp/udp frames (-I provides seed)\n"
+"    -D      don't buffer TCP writes (sets TCP_NODELAY socket option)\n"
+"    -H      print hash marks to indicate progress, one per buffer\n"
+"    -I      init/seed value for RNG when sending random size bufs (default 1)\n"
+"    -N ##   number of source bufs per burst, i.e between sleeps (default 1)\n"
+"    -R ##   send random size buffers with minimum size specified, max size\n"
+"            is value of -l option\n"
+"    -S ##   millisecs between bursts (only used for udp, 10ms resolution)\n"
+"Options specific to (ttcp -r) :\n"
+"    -B      for -s, only output full blocks as specified by -l (for TAR)\n"
+"    -T      \"touch\": access each byte as it's read\n"
+"    -i      report information on out of order sequence numbers\n"
+#if defined(DEBUG)
+"Options for debug:\n"
+"    --nostart do not send UDP start packets\n"
+"    --noend   do not send UDP end packets\n"
+"    --nodata  do not send UDP data packets\n"
+"    --debug   print extra debug outputs\n"
+#endif /* DEBUG */
+;
+ 
+  fprintf(stderr,Usage);
+}
+
+/* Define automatic Emacs variables for consistent code formatting */
+/* Local Variables:     */
+/* c-basic-offset:2     */
+/* indent-tabs-mode:nil */
+/* End:                 */
diff --git a/openwrt/package/ttcp/ttcp.control b/openwrt/package/ttcp/ttcp.control
new file mode 100644
index 000000000..3633ef1df
--- /dev/null
+++ b/openwrt/package/ttcp/ttcp.control
@@ -0,0 +1,6 @@
+Package: ttcp
+Priority: optional
+Section: net
+Maintainer: Felix Fietkau <nbd@vd-s.ath.cx>
+Source: buildroot internal
+Description: A small utility to test TCP connection performance