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/**
* Localchat
* Ben Burwell
*
* Send chat request
*/
void send_chat_request(char * username) {
int i;
char ip[16];
pthread_mutex_lock(&peer_table_lock);
for (i = 0; i < num_peers_in_table; i++) {
if (strcmp(peers[i].username, username) == 0) {
strcpy(ip, peers[i].ip);
}
}
pthread_mutex_unlock(&peer_table_lock);
struct sockaddr_in server_addr;
char out_buf[GLOBAL_MSG_LENGTH];
char in_buf[GLOBAL_MSG_LENGTH];
int retcode;
// create the socket
client_s = socket(AF_INET, SOCK_STREAM, 0);
if (client_s < 0) {
printf("Network error, quitting... \n");
exit(-1);
}
// fill in server info
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(CHAT_PORT);
server_addr.sin_addr.s_addr = inet_addr(ip);
retcode = connect(client_s, (struct sockaddr *)&server_addr, sizeof(server_addr));
if (retcode < 0) {
printf("Network error, quitting... \n");
exit(-1);
}
// send the session request
strcpy(out_buf, "SESREQ");
send(client_s, out_buf, strlen(out_buf), 0);
// set the timeout of the socket
struct timeval tv;
tv.tv_sec = REQUEST_TIMEOUT;
tv.tv_usec = 0;
setsockopt(client_s, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(struct timeval));
retcode = recv(client_s, in_buf, sizeof(in_buf), 0);
if (retcode == -1) {
// socket timed out or didn't receive anything
printf("No response from peer within timeout window \n");
} else {
if (strcmp(in_buf, "SESANS:Y") == 0) {
printf("Request accepted, type /q to leave. \n");
// set my in_chat flag
strcpy(in_chat, "Y");
pthread_t recv_thread;
pthread_create(&recv_thread, NULL, receive_chat_messages, NULL);
// set the user prompt
strcpy(prompt, "chat>");
} else {
printf("Session declined. \n");
}
}
return;
}
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