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Soulstorm · Mar 6th, 2008, 5:34 AM

Quote:

Originally Posted by Sane

Usually that happens when you haven't sent the correct message, you haven't properly terminated the message, or you haven't sent a message when it was expecting one. My gut feeling is with the latter. During the time it's waiting, it could be waiting for you to send a valid reply or acknowledgement. I have no experience with interfacing to an IRC server, so I can't suggest anything specific.

Edit: I'm fairly confident with my assumption. NOTICE AUTH ** No Ident response. It seems as though it was waiting for a response. Presumably, imformation about your identity. But you don't appear to send it anything. Consequently, it waits a few seconds, and then assumes you timed out and closes the connection. That is my assumption.

You were right. It waited for me to give 2 commands, the NICK and USER commands. I tried connecting to efnet.teleglobe.net using telnet (on OS X terminal, which is the equivalent of the dos command prompt) and then I entered the NICK and USER commands.

(Toggle Plain Text)

telnet efnet.teleglobe.net 6667
NICK NICK MyWayCoolBotNick\r\n
USER ObjcBot 8 * :The Objective-C Bot\r\n

I manages to connect and receive information about the server.

However, I did that using the terminal. I don't know how can I send that using C. The only thing I manage to do is to open a telnet communication with the server with the connect() command. How can I send the other 2 commands? With the send() command? That's what I am trying in the code below.

 c Syntax (Toggle Plain Text) 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
 
#define PORT 6667 // the port client will be connecting to 
 
#define MAXDATASIZE 2000 // max number of bytes we can get at once 
 
int main(int argc, char *argv[])
{
	int sockfd, numbytes;
    char buf[MAXDATASIZE];
    struct hostent *he;
    struct sockaddr_in their_addr; // connector's address information
 
    he = gethostbyname("efnet.teleglobe.net");
    sockfd = socket(PF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
		printf("error creating the socket\n");
    }
    their_addr.sin_family       = AF_INET;
    their_addr.sin_port         = htons(PORT);
    their_addr.sin_addr         = *((struct in_addr *)he->h_addr);
    memset(their_addr.sin_zero, '\0', sizeof their_addr.sin_zero);
 
 
    if (connect(sockfd, (struct sockaddr *)&their_addr,
				sizeof their_addr) == -1) {
		perror("connect\n");
		exit(1);
    } 
	else {
		printf("You got the connection to the server!\n");
 
		fprintf(stderr,"After send, entering recv loop\n");
		numbytes = 0;
		do {
			numbytes = 0;
			memset(buf, 0, sizeof(buf));
			//fprintf(stderr,"In recv loop\n");
			numbytes=recv(sockfd, buf, sizeof(buf)-1, 0); //-1 b/c you will null terminate
			buf[numbytes] = '\0';
			printf("Received: %s",buf);
		} while (numbytes != 0);
 
		//char command[] = "PING\r\n";
		char nickCommand[] = "NICK MyWayCoolBotNick\r\n";
		char userCommand[] = "USER ObjcBot 8 * :The Objective-C Bot\r\n";
		//system("telnet efnet.teleglobe.net 6667");
 
		//send(sockfd, command, sizeof(command), 0);
		send(sockfd, nickCommand, sizeof(nickCommand), 0);
		send(sockfd, userCommand, sizeof(userCommand), 0);
 
		printf("exited first loop!!!\n");
		do {
 
			numbytes = 0;
			memset(buf, 0, sizeof(buf));
			//fprintf(stderr,"In recv loop\n");
			numbytes=recv(sockfd, buf, sizeof(buf)-1, 0); //-1 b/c you will null terminate
			buf[numbytes] = '\0';
			printf("Received: %s",buf);
		} while (numbytes !=0);
 
 
 
		fflush(stdout);
		close(sockfd);
	}
	return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>

#define PORT 6667 // the port client will be connecting to 

#define MAXDATASIZE 2000 // max number of bytes we can get at once 

int main(int argc, char *argv[])
{
	int sockfd, numbytes;
    char buf[MAXDATASIZE];
    struct hostent *he;
    struct sockaddr_in their_addr; // connector's address information
	
    he = gethostbyname("efnet.teleglobe.net");
    sockfd = socket(PF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
		printf("error creating the socket\n");
    }
    their_addr.sin_family       = AF_INET;
    their_addr.sin_port         = htons(PORT);
    their_addr.sin_addr         = *((struct in_addr *)he->h_addr);
    memset(their_addr.sin_zero, '\0', sizeof their_addr.sin_zero);
	
	
    if (connect(sockfd, (struct sockaddr *)&their_addr,
				sizeof their_addr) == -1) {
		perror("connect\n");
		exit(1);
    } 
	else {
		printf("You got the connection to the server!\n");
		
		fprintf(stderr,"After send, entering recv loop\n");
		numbytes = 0;
		do {
			numbytes = 0;
			memset(buf, 0, sizeof(buf));
			//fprintf(stderr,"In recv loop\n");
			numbytes=recv(sockfd, buf, sizeof(buf)-1, 0); //-1 b/c you will null terminate
			buf[numbytes] = '\0';
			printf("Received: %s",buf);
		} while (numbytes != 0);
		
		//char command[] = "PING\r\n";
		char nickCommand[] = "NICK MyWayCoolBotNick\r\n";
		char userCommand[] = "USER ObjcBot 8 * :The Objective-C Bot\r\n";
		//system("telnet efnet.teleglobe.net 6667");
		
		//send(sockfd, command, sizeof(command), 0);
		send(sockfd, nickCommand, sizeof(nickCommand), 0);
		send(sockfd, userCommand, sizeof(userCommand), 0);
		
		printf("exited first loop!!!\n");
		do {
			
			numbytes = 0;
			memset(buf, 0, sizeof(buf));
			//fprintf(stderr,"In recv loop\n");
			numbytes=recv(sockfd, buf, sizeof(buf)-1, 0); //-1 b/c you will null terminate
			buf[numbytes] = '\0';
			printf("Received: %s",buf);
		} while (numbytes !=0);
		
		
		
		fflush(stdout);
		close(sockfd);
	}
	return 0;
}

But the problem is that it is as if those last 2 commands were never sent. Any ideas?