Meet Paul
--#--
OK, now we'll write the <i>main()</i> function, compile the 
sucker and name him Paul (he's Pete's partner, right?). <br>
<br>
<code>
#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: connect 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;
}
</code>
<br>
Use the following command line to compile:<br>
<br>
<code>
cc -o paul paul.c request.c sockets.c -lm -lnsl
</code>
<br>
Or, use this Makefile:<br>
<br>
<code>
CC=gcc
CFLAG=
LIBS=-lm -lnsl
OBJS=main.o sockets.o request.o

paul: $(OBJS)
	$(CC) -o paul $(OBJS) $(LIBS)

paul.o: paul.c
	$(CC) $(CFLAG) -c paul.c
		   
sockets.o: sockets.c
	$(CC) $(CFLAG) -c sockets.c
				   
request.o: request.c
	$(CC) $(CFLAG) -c request.c
</code>
<br>