Тестовые примеры / ch11 / socket / sock_msg_cls

#include "sock.h"
#define QUIT_CMD 2

int main( int argc, char* argv[]) 
{
   if (argc < 2) {
      cerr << "usage: " << argv[0] << " <sockname|port> [<host>]\n";
      return 1;
   }

   int  port=-1, rc;

   /* check if port number of socket name is spceified */
   (void)sscanf(argv[1],"%d",&port);

   /* 'host' may be a socket name or a host name */
   char buf[80], *host= (port==-1) ? argv[1] : argv[2], socknm[80];

   /* create a client socket */
   sock sp( port!=-1 ? AF_INET : AF_UNIX, SOCK_STREAM );
   if (!sp.good()) return 1;

   /* connect to a server socket */
   if (sp.connect(host,port) < 0) return 8;
 
   /* Send cmds 0 -> 2 to server */
   for (int cmd=0; cmd < 3; cmd++) 
   {
      /* compose a command to server */
      sprintf(buf,"%d",cmd);
      if (sp.write(buf,strlen(buf)+1) < 0) return 9;

      /* exit the loop if QUIT_CMD */
      if (cmd==QUIT_CMD) break;

      /* read reply from server */
      if (sp.read(buf,sizeof buf) < 0) return 10;
      cerr << "client: recv '" << buf << "'\n";
   }
   sp.shutdown();
   return 0;
}