tcp/null/server.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <assert.h>
   4 #include <string.h>
   5 #include <sys/socket.h>
   6 #include <arpa/inet.h>
   7 #include <unistd.h>
   8 #include <errno.h>
   9
  10 int main(int argc, char **argv)
  11 {
  12         int mySocket, clientSocket, clientLenght;
  13         struct sockaddr_in server, client;
  14         char byte = 'B';
  15
  16         if(argc < 2) {
  17                 printf("Usage: %s <port>\n", argv[0]);
  18                 exit(1);
  19         }
  20
  21         mySocket = socket(AF_INET, SOCK_STREAM, 0);
  22         assert(mySocket != -1);
  23
  24         memset(&server, 0, sizeof(server));
  25         server.sin_family = AF_INET;
  26         server.sin_addr.s_addr = htonl(INADDR_ANY);
  27         server.sin_port = htons(atoi(argv[1]));
  28
  29         assert(bind(mySocket, (struct sockaddr *) &server, sizeof(server)) == 0);
  30         assert(listen(mySocket, 1) == 0);
  31
  32         clientLenght = sizeof(client);
  33         //for(i = 0; i < TESTS_TOTAL; i++) {
  34         while(1) {
  35 #ifdef DEBUG
  36                 printf("server: %i\n", i);
  37 #endif
  38                 clientSocket = accept(mySocket, (struct sockaddr *) &client, (unsigned int *) &clientLenght);
  39                 //printf("errno: %i\n", errno);
  40                 assert(clientSocket != -1);
  41
  42                 assert(recv(clientSocket, &byte, 1, 0) == 1);
  43                 assert(send(clientSocket, &byte, 1, 0) == 1);
  44                 //assert(recv(clientSocket, NULL, 0, 0) == 0);
  45                 //assert(send(clientSocket, NULL, 0, 0) == 0);
  46
  47                 close(clientSocket);
  48         }
  49
  50         //close(clientSocket);
  51         close(mySocket);
  52
  53         return 0;
  54 }
  55