64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
// TCP Client test program
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#include <stdio.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#define MSGSZ 1024
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int atoi(const char *str);
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int close(int filedes);
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int main(int argc , char *argv[])
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{
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if(argc < 3) {
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printf("usage: client <addr> <port>\n");
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return 1;
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}
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int sock, port = atoi(argv[2]);
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struct sockaddr_in server;
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char message[MSGSZ] , server_reply[MSGSZ];
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sock = socket(AF_INET , SOCK_STREAM , 0);
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if (sock == -1) {
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printf("could not create socket");
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}
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server.sin_addr.s_addr = inet_addr(argv[1]);
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server.sin_family = AF_INET;
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server.sin_port = htons( port );
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printf("connecting...\n");
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if (connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0) {
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perror("connect failed. Error");
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return 1;
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}
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printf("connected\n");
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memset(message, 1, MSGSZ);
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while(1)
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{
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//sleep(1);
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// TX
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if(send(sock, message, MSGSZ, 0) < 0) {
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printf("send failed");
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return 1;
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}
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else {
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printf("TX: %s\n", message);
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printf("len = %ld\n", strlen(message));
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int bytes_read = read(sock, server_reply, MSGSZ);
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if(bytes_read < 0)
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printf("\tRX: Nothing\n");
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else
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printf("\tRX = (%d bytes): %s\n", bytes_read, server_reply);
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}
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}
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close(sock);
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return 0;
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}
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