socket_recv.c

   1 #include <sys/types.h>
   2 #include <sys/param.h>
   3 #include <sys/socket.h>
   4 #include <netinet/in.h>
   5 #include "byte.h"
   6 #include "socket.h"
   7
   8 int socket_recv4(int s,char *buf,int len,char ip[4],uint16 *port)
   9 {
  10   struct sockaddr_in sa;
  11   int dummy = sizeof sa;
  12   int r;
  13
  14   r = recvfrom(s,buf,len,0,(struct sockaddr *) &sa,&dummy);
  15   if (r == -1) return -1;
  16
  17   byte_copy(ip,4,(char *) &sa.sin_addr);
  18   uint16_unpack_big((char *) &sa.sin_port,port);
  19
  20   return r;
  21 }