int main(int argc, char *argv[]) {
int listener, conn;
pid_t pid;
struct sockaddr_in servaddr;
/* Create socket */
if ( (listener = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
Error_Quit("Couldn't create listening socket.");
/* Populate socket address structure */
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(SERVER_PORT);
/* Assign socket address to socket */
if ( bind(listener, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0 )
Error_Quit("Couldn't bind listening socket.");
/* Make socket a listening socket */
if ( listen(listener, LISTENQ) < 0 )
Error_Quit("Call to listen failed.");
/* Loop infinitely to accept and service connections */
while ( 1 ) {
/* Wait for connection */
if ( (conn = accept(listener, NULL, NULL)) < 0 )
Error_Quit("Error calling accept()");
/* Fork child process to service connection */
if ( (pid = fork()) == 0 ) {
/* This is now the forked child process, so
close listening socket and service request */
if ( close(listener) < 0 )
Error_Quit("Error closing listening socket in child.");
Service_Request(conn);
/* Close connected socket and exit */
if ( close(conn) < 0 )
Error_Quit("Error closing connection socket.");
exit(EXIT_SUCCESS);
}
/* If we get here, we are still in the parent process,
so close the connected socket, clean up child processes,
and go back to accept a new connection. */
if ( close(conn) < 0 )
Error_Quit("Error closing connection socket in parent.");
waitpid(-1, NULL, WNOHANG);
}
return EXIT_FAILURE; /* We shouldn't get here */
}
void start_server() {
printf("STARTING SERVER!\n localhost:%d\n", SERVER_PORT);
if(SERVER_PORT<1024)p("sudo netbase if port < 1024 !!!");
flush();
/* Create socket */
if ((listener = socket(AF_INET, SOCK_STREAM, 0)) < 0)
Error_Quit("Couldn't create listening socket.");
int flag = 1;// allow you to bind a local port that is in TIME_WAIT.
// This is very useful to ensure you don't have to wait 4 minutes after killing a server before restarting it.
setsockopt(listener, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));
/* Populate socket address structure */
memset(&servaddr, 0, sizeof (servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(SERVER_PORT);
/* Assign socket address to socket */
// __bind<int&,sockaddr *,unsigned long> x=
bind(listener, (struct sockaddr *) &servaddr, sizeof (servaddr));
if(listener<0)
Error_Quit("Couldn't bind listening socket.");
/* Make socket a listening socket */
// if (listen(listener, BACKLOG) < 0)
if (listen(listener, LISTENQ) < 0)
Error_Quit("Call to listen failed.");
printf("listening on %d port %d\n", INADDR_ANY, SERVER_PORT);
p(" [debugging server doesn't work with xcode, use ./compile.sh ]");
/* Loop infinitely to accept and service connections */
while (1) {
/* Wait for connection */
// NOT with XCODE -> WEBSERV
conn = accept(listener, NULL, NULL);
if (conn < 0)
Error_Quit("Error calling accept()! debugging not supported, are you debugging?");
else p("conn = accept OK");
// WORKS FINE, but not when debugging
/* Fork child process to service connection */
pid = fork();
if (pid == 0) {
/* This is now the forked child process, so
close listening socket and service request */
if (close(listener) < 0)
Error_Quit("Error closing listening socket in child.");
Service_Request(conn);
/* Close connected socket and exit forked process */
if (close(conn) < 0)
Error_Quit("Error closing connection socket.");
exit(EXIT_SUCCESS);
}else{
// p("not forked yet"); // !!?!
// Service_Request(conn);// whatever
}
/* If we get here, we are still in the parent process,
so close the connected socket, clean up child processes,
and go back to accept a new connection.
*/
waitpid(-1, NULL, WNOHANG);
if (close(conn) < 0)
Error_Quit("Error closing connection socket in parent.");
}
Error_Quit("FORK web server failed");
return; // EXIT_FAILURE; /* We shouldn't get here */
}