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  1. /*
  2. Program: minser.c
  3. Author: Dr Beco, 2011-04-03
  4. Objective:
  5.     show a minimum server program that can
  6.     create a socket, accept a client, read a byte, write a byte, disconnect
  7. */
  8.  
  9. #include <stdio.h>
  10. #include <unistd.h>
  11. #include <netinet/in.h>
  12. #include <sys/un.h>
  13. #include <string.h>
  14. #include <unistd.h>
  15. #include <arpa/inet.h>
  16.  
  17. #define BUFFER 200
  18.  
  19. int main(void)
  20. {
  21.     int port = 8234;
  22.     char data[BUFFER];
  23.     struct sockaddr_in dir;
  24.     struct sockaddr client;
  25.     socklen_t long_client;
  26.     int id, idReuse=1, son, aux;
  27.  
  28.     memset(&dir,0,sizeof(dir));
  29.     dir.sin_port = port;
  30.     dir.sin_family = AF_INET;
  31.     //dir.sin_addr.s_addr = INADDR_ANY;
  32.     dir.sin_addr.s_addr = inet_addr("192.168.0.201");
  33.  
  34.     id = socket(AF_INET, SOCK_STREAM, 0);
  35.     if (id == -1) {
  36.         return -1;
  37. 	}
  38.  
  39.     if(setsockopt(id,SOL_SOCKET,SO_REUSEADDR,&idReuse,sizeof(idReuse)) == -1) {
  40.        return -1;
  41. 	}
  42.  
  43.     if(bind(id, (struct sockaddr *)&dir, sizeof(dir)) == -1)
  44.     {
  45.         close (id);
  46.         return -1;
  47.     }
  48.  
  49.     if (listen(id , 1) == -1)
  50.     {
  51. 		printf("Failed to listen on the socket\n");
  52.         close(id);
  53.         return -1;
  54.     }
  55.  
  56.     long_client = sizeof (client);
  57.     son = accept(id, &client, &long_client);
  58.     aux = read(son, data , 1);
  59. 	//aux = send(son, "S", 1, MSG_NOSIGNAL);
  60.     aux = send(son, "S", 1, SO_NOSIGPIPE); // for macOS
  61.     printf("done!\n");
  62.  
  63.     return 0;
  64. }
  65.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.c: In function ‘main’:
prog.c:59:29: error: ‘SO_NOSIGPIPE’ undeclared (first use in this function); did you mean ‘SO_OOBINLINE’?
     aux = send(son, "S", 1, SO_NOSIGPIPE);
                             ^~~~~~~~~~~~
                             SO_OOBINLINE
prog.c:59:29: note: each undeclared identifier is reported only once for each function it appears in
prog.c:26:29: warning: variable ‘aux’ set but not used [-Wunused-but-set-variable]
     int id, idReuse=1, son, aux;
                             ^~~
stdout
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Standard output is empty
https://ideone.com/J0J0Gj
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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