Listener Function

void *listener(int *sock)
{
    char message[138];
    int newsock, sockreturn;
    socklen_t clilen;

    writelog("Starting server...\n");

    struct sockaddr_in cliaddr;
    struct addrinfo a, *b;

    memset(&a, 0, sizeof(a));
    a.ai_family = AF_UNSPEC;
    a.ai_socktype = SOCK_STREAM;
    a.ai_flags = AI_PASSIVE;

    memset(&cliaddr, 0, sizeof(cliaddr));
    cliaddr.sin_family = AF_INET;
    cliaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    cliaddr.sin_port = htons(22580);

    getaddrinfo(NULL, "22580", &a, &b);

    *sock = socket(b->ai_family, b->ai_socktype, b->ai_protocol);

    if(*sock == -1) {
        writelog("Server: couldn't create a socket.\n");
        return NULL;
    }

    if(bind(*sock, b->ai_addr, b->ai_addrlen) == -1) {
        writelog("Server: couldn't bind to port 25580.\n");
        return NULL;
    }

    if(listen(*sock, 5) == -1) {
        writelog("Server: couldn't listen on port 25580.\n");
        return NULL;
    }

    writelog("Server: listening on port 22580.\n");
    while(1) {
        clilen = sizeof(cliaddr);
        newsock = accept(*sock, (struct sockaddr *)&cliaddr, &clilen);
        if(newsock < 0) writelog("Server: error on accept.\n");
        bzero(message, 130);
        sockreturn = read(newsock, message, 130);
        if(sockreturn < 0) writelog("Server: error reading from socket.\n");

        processServerMessage(message);
        close(newsock);
    }


    return NULL;
}