/* paul.c  */

// This code is provided "as is" with NO WARRANTY expressed or 
// implied. You may use it freely at your own risk.

#include <stdio.h>

extern char *getHost(char *hostName, int *portNum, char *arg);
extern void die(char *s);
extern int openSocket(char *host, int port);
extern char *formRequest();
extern int writeToSocket(int sock, char *request);
extern void printServerResponse(int socket);

int main(int argc, char *argv[]) {
   char hostName[128];
   int portNum = 80;
   int sock, result;
   char *request;

   if (argc < 2) {
      die("Usage: paul hostname:port");
	}

   getHost(hostName, &portNum, argv[1]);
   request = formRequest();

   if ((sock = openSocket(hostName, portNum)) < 0)
      die("Can't open socket");
   result = writeToSocket(sock, request);
   if (result < 0)
      die("Server barfed on request");
   printServerResponse(sock);

   free(request);
   return 0;
}