C API Reference -- Ns_SockAsyncConnect

### Ns_SockAsyncConnect

#### Overview

Create a remote socket and return immediately

#### Syntax

        SOCKET Ns_SockAsyncConnect (
        char *host,
        int port
        );

#### Description

Ns_SockAsyncConnect creates a socket connected to a remote host and port, returning immediately with the connection in progress. A select call can later be used to determine when the connection has been established.

#### Examples

        SOCKET sock;
        fd_set set;
        struct timeval tv;
        sock = Ns_SockAsyncConnect("mailhost", 25);
        ... perform some other work while connection is in progress...

        ... check for connection ...
        tv.tv_sec = 2; /* allow 2 more seconds */
        tv.tv_usec = 0;
        FD_ZERO(&set);
        FD_SET(sock, &set);
        if (select(sock+1, NULL, &set, NULL, &tv) != 1) {
          ... timeout - close socket and return error...
          Ns_CloseLater(sock);
        } else {
          ... use socket ...
        }

Top of Page
Copyright © 1998-99 America Online, Inc.