socket_conn.c

   1 #include <sys/types.h>
   2 #include <sys/param.h>
   3 #include <sys/socket.h>
   4 #include <netinet/in.h>
   5 #include <unistd.h>
   6 #include "byte.h"
   7 #include "socket.h"
   8
   9 int socket_connect4(int s,const char ip[4],uint16 port)
  10 {
  11   struct sockaddr_in sa;
  12
  13   byte_zero(&sa,sizeof sa);
  14   sa.sin_family = AF_INET;
  15   uint16_pack_big((char *) &sa.sin_port,port);
  16   byte_copy((char *) &sa.sin_addr,4,ip);
  17
  18   return connect(s,(struct sockaddr *) &sa,sizeof sa);
  19 }
  20
  21 int socket_connected(int s)
  22 {
  23   struct sockaddr_in sa;
  24   int dummy;
  25   char ch;
  26
  27   dummy = sizeof sa;
  28   if (getpeername(s,(struct sockaddr *) &sa,&dummy) == -1) {
  29     read(s,&ch,1); /* sets errno */
  30     return 0;
  31   }
  32   return 1;
  33 }