68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
// TCP Server 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 main(int argc , char *argv[])
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{
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if(argc < 2) {
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printf("usage: tcp_server <port>\n");
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return 0;
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}
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int sock, client_sock, c, read_size, port = atoi(argv[1]);
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char message[MSGSZ];
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char str[MSGSZ];
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int comm_fd;
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struct sockaddr_in servaddr;
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struct sockaddr_in client;
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sock = socket(AF_INET, SOCK_STREAM, 0);
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bzero( &servaddr, sizeof(servaddr));
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servaddr.sin_family = AF_INET;
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servaddr.sin_addr.s_addr = htons(INADDR_ANY);
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servaddr.sin_port = htons(port);
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bind(sock, (struct sockaddr *) &servaddr, sizeof(servaddr));
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printf("listening\n");
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listen(sock , 3);
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printf("waiting to accept\n");
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c = sizeof(struct sockaddr_in);
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client_sock = accept(sock, (struct sockaddr *)&client, (socklen_t*)&c);
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if (client_sock < 0) {
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perror("accept failed");
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return 0;
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}
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printf("connection accepted\n reading...\n");
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// RX
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unsigned long count = 0;
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while(1)
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{
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count++;
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int bytes_read = read(client_sock, message, MSGSZ);
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printf("[%lu] RX = (%d): ", count, bytes_read);
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//for(int i=0; i<bytes_read; i++) {
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// printf("%c", message[i]);
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//}
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// TX
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int bytes_written = write(client_sock, message, MSGSZ);
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printf("\t\nTX = %d\n", bytes_written);
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}
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return 0;
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}
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