#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <netdb.h>#include <stdio.h>#include <unistd.h>Include dependency graph for tcpClient.c:
Go to the source code of this file.
Defines | |
| #define | SERVER_PORT 7 |
| #define | MAX_MSG 100 |
Functions | |
| int | main (int argc, char *argv[]) |
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Definition at line 20 of file tcpClient.c. Referenced by main(). |
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Definition at line 19 of file tcpClient.c. Referenced by main(). |
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Definition at line 22 of file tcpClient.c. References AF_INET, gethostbyname(), htonl, htons, INADDR_ANY, NULL, in_addr::s_addr, SERVER_PORT, sockaddr_in::sin_addr, sockaddr_in::sin_family, sockaddr_in::sin_port, and SOCK_STREAM.
00022 {
00023
00024 int sd, rc, i;
00025 struct sockaddr_in localAddr, servAddr;
00026 struct hostent *h;
00027
00028 if(argc < 3) {
00029 printf("usage: %s <server> <data1> <data2> ... <dataN>\n",argv[0]);
00030 exit(1);
00031 }
00032
00033 h = gethostbyname(argv[1]);
00034 if(h==NULL) {
00035 printf("%s: unknown host '%s'\n",argv[0],argv[1]);
00036 exit(1);
00037 }
00038
00039 servAddr.sin_family = h->h_addrtype;
00040 memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
00041 servAddr.sin_port = htons(SERVER_PORT);
00042
00043 /* create socket */
00044 sd = socket(AF_INET, SOCK_STREAM, 0);
00045 if(sd<0) {
00046 perror("cannot open socket ");
00047 exit(1);
00048 }
00049
00050 /* bind any port number */
00051 localAddr.sin_family = AF_INET;
00052 localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
00053 localAddr.sin_port = htons(0);
00054
00055 rc = bind(sd, (struct sockaddr *) &localAddr, sizeof(localAddr));
00056 if(rc<0) {
00057 printf("%s: cannot bind port TCP %u\n",argv[0],SERVER_PORT);
00058 perror("error ");
00059 exit(1);
00060 }
00061
00062 /* connect to server */
00063 rc = connect(sd, (struct sockaddr *) &servAddr, sizeof(servAddr));
00064 if(rc<0) {
00065 perror("cannot connect ");
00066 exit(1);
00067 }
00068
00069 for(i=2;i<argc;i++) {
00070
00071 rc = send(sd, argv[i], strlen(argv[i]) + 1, 0);
00072
00073 if(rc<0) {
00074 perror("cannot send data ");
00075 close(sd);
00076 exit(1);
00077
00078 }
00079
00080 printf("%s: data%u sent (%s)\n",argv[0],i-1,argv[i]);
00081
00082
00083 }
00084
00085 close(sd);
00086
00087 return 0;
00088
00089 }
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1.3.4