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- Committer: tridge
- Date: 2006-08-13 06:50:46 UTC
- Revision ID: vcs-imports@canonical.com-20060813065046-faca53adb6ad9f49
messaging tests from Mainz
- files added:
- messaging
added
removed
messaging/tcp2.c
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/*
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measure latency of tcp sockets
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tridge@samba.org July 2006
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/poll.h>
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#include <sys/time.h>
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#include <time.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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typedef int BOOL;
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#define True 1
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#define False 0
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static struct timeval tp1,tp2;
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static void start_timer()
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{
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gettimeofday(&tp1,NULL);
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}
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static double end_timer()
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{
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gettimeofday(&tp2,NULL);
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return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) -
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(tp1.tv_sec + (tp1.tv_usec*1.0e-6));
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}
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static void fatal(const char *why)
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{
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fprintf(stderr, "fatal: %s - %s\n", why, strerror(errno));
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exit(1);
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}
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enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON};
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struct
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{
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char *name;
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int level;
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int option;
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int value;
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int opttype;
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} socket_options[] = {
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{"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL},
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{"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL},
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{"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL},
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#ifdef TCP_NODELAY
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{"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},
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#endif
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#ifdef IPTOS_LOWDELAY
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{"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},
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#endif
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#ifdef IPTOS_THROUGHPUT
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{"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},
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#endif
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#ifdef SO_SNDBUF
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{"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},
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#endif
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#ifdef SO_RCVBUF
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{"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},
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#endif
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#ifdef SO_SNDLOWAT
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{"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},
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#endif
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#ifdef SO_RCVLOWAT
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{"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
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#endif
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#ifdef SO_SNDTIMEO
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{"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
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#endif
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#ifdef SO_RCVTIMEO
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{"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
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#endif
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{NULL,0,0,0,0}};
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/****************************************************************************
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Get the next token from a string, return False if none found
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handles double-quotes.
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Based on a routine by GJC@VILLAGE.COM.
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Extensively modified by Andrew.Tridgell@anu.edu.au
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****************************************************************************/
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BOOL next_token(char **ptr,char *buff,char *sep)
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{
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char *s;
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BOOL quoted;
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static char *last_ptr=NULL;
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if (!ptr) ptr = &last_ptr;
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if (!ptr) return(False);
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s = *ptr;
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/* default to simple separators */
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if (!sep) sep = " \t\n\r";
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/* find the first non sep char */
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while(*s && strchr(sep,*s)) s++;
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/* nothing left? */
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if (! *s) return(False);
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/* copy over the token */
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for (quoted = False; *s && (quoted || !strchr(sep,*s)); s++)
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{
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if (*s == '\"')
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quoted = !quoted;
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else
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*buff++ = *s;
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}
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*ptr = (*s) ? s+1 : s;
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*buff = 0;
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last_ptr = *ptr;
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return(True);
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}
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/****************************************************************************
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set user socket options
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****************************************************************************/
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void set_socket_options(int fd, char *options)
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{
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char tok[200];
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while (next_token(&options,tok," \t,"))
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{
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int ret=0,i;
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int value = 1;
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char *p;
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BOOL got_value = False;
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if ((p = strchr(tok,'=')))
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{
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*p = 0;
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value = atoi(p+1);
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got_value = True;
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}
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for (i=0;socket_options[i].name;i++)
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if (strcasecmp(socket_options[i].name,tok)==0)
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break;
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if (!socket_options[i].name)
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{
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printf("Unknown socket option %s\n",tok);
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continue;
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}
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switch (socket_options[i].opttype)
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{
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case OPT_BOOL:
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case OPT_INT:
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ret = setsockopt(fd,socket_options[i].level,
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socket_options[i].option,(char *)&value,sizeof(int));
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break;
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case OPT_ON:
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if (got_value)
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printf("syntax error - %s does not take a value\n",tok);
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{
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int on = socket_options[i].value;
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ret = setsockopt(fd,socket_options[i].level,
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socket_options[i].option,(char *)&on,sizeof(int));
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}
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break;
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}
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if (ret != 0)
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printf("Failed to set socket option %s\n",tok);
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}
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}
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/*
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connect to a tcp socket
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*/
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int tcp_socket_connect(const char *host, int port)
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{
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int type = SOCK_STREAM;
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struct sockaddr_in sock_out;
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int res;
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struct hostent *hp;
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res = socket(PF_INET, type, 0);
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if (res == -1) {
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return -1;
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}
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hp = gethostbyname(host);
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if (!hp) {
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fprintf(stderr,"unknown host: %s\n", host);
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close(res);
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return -1;
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}
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memcpy(&sock_out.sin_addr, hp->h_addr, hp->h_length);
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sock_out.sin_port = htons(port);
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sock_out.sin_family = PF_INET;
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if (connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out))) {
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fprintf(stderr,"failed to connect to %s - %s\n", host, strerror(errno));
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close(res);
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return -1;
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}
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return res;
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}
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/*
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create a tcp socket and bind it
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return a file descriptor open on the socket
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*/
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static int tcp_socket_bind(int port)
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{
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struct hostent *hp;
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struct sockaddr_in sock;
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char host_name[1000];
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int res;
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int one=1;
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/* get my host name */
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if (gethostname(host_name, sizeof(host_name)) == -1) {
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fprintf(stderr,"gethostname failed\n");
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return -1;
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}
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/* get host info */
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if ((hp = gethostbyname(host_name)) == 0) {
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fprintf(stderr,"gethostbyname: Unknown host %s\n",host_name);
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return -1;
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}
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memset((char *)&sock,0,sizeof(sock));
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memcpy((char *)&sock.sin_addr,(char *)hp->h_addr, hp->h_length);
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sock.sin_port = htons(port);
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sock.sin_family = hp->h_addrtype;
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sock.sin_addr.s_addr = INADDR_ANY;
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res = socket(hp->h_addrtype, SOCK_STREAM, 0);
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if (res == -1) {
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fprintf(stderr,"socket failed\n");
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return -1;
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}
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setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof(one));
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/* now we've got a socket - we need to bind it */
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if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) == -1) {
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fprintf(stderr,"bind failed on port %d\n", port);
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close(res);
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return -1;
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}
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listen(res, 1);
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return res;
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}
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/*
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accept on a tcp socket
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*/
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static int tcp_socket_accept(int fd)
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{
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struct sockaddr a;
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socklen_t len;
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return accept(fd, &a, &len);
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}
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static void worker(const char *host, int port1, int port2, int w)
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{
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int l = tcp_socket_bind(port1);
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int s2, s1;
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int count=0;
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set_socket_options(l, "SO_REUSEADDR");
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sleep(2);
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s2 = tcp_socket_connect(host, port2);
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s1 = tcp_socket_accept(l);
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set_socket_options(s1, "TCP_NODELAY");
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set_socket_options(s2, "TCP_NODELAY");
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start_timer();
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while (1) {
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char c=0;
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if (write(s2, &c, 1) != 1) {
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fatal("write");
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}
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if (read(s1, &c, 1) != 1) {
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fatal("read");
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}
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if (w == 1 && (end_timer() > 1.0)) {
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printf("%8u ops/sec\r",
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(unsigned)(2*count/end_timer()));
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fflush(stdout);
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start_timer();
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count=0;
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}
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count++;
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}
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}
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int main(int argc, char *argv[])
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{
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worker(argv[1], atoi(argv[2]), atoi(argv[3]), 1);
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return 0;
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}
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