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socket_connect6(3)    DragonFly Library Functions Manual    socket_connect6(3)

NAME
       socket_connect6 - attempt to make a TCP connection

SYNTAX
       #include <socket.h>

       int socket_connect6(int s, const char ip[16],
                           uint16 port,uint32 scope_id);

DESCRIPTION
       socket_connect6 attempts to make a connection from TCP socket s to TCP
       port port on IP address ip.

       The meaning of scope_id is dependent on the implementation and IPv6 IP.
       On link-local IPv6 addresses it specifies the outgoing interface index.
       The name (e.g. "eth0") for a given interface index can be queried with
       getifname.  scope_id should normally be set to 0.

       socket_connect6 may return

       o      0, to indicate that the connection succeeded (and succeeded
              immediately, if the socket is non-blocking)

       o      -1, setting errno to error_inprogress or error_wouldblock, to
              indicate that the socket is non-blocking

       o      -1, setting errno to something else, to indicate that the
              connection failed (and failed immediately, if the socket is non-
              blocking).

       When a background connection succeeds or fails, s becomes writable; you
       can use socket_connected to see whether the connection succeeded.  If
       the connection failed, socket_connected returns 0, setting errno
       appropriately.

       Once a TCP socket is connected, you can use the read and write system
       calls to transmit data.

       You can call socket_connect6 without calling socket_bind6.  This has
       the effect as first calling socket_bind6 with IP address :: and port 0.

EXAMPLE
         #include <socket.h>

         int s;
         char ip[16];
         uint16 p;

         s = socket_tcp6();
         socket_bind6(s,ip,p);
         socket_connect6(s,ip,p,0);

SEE ALSO
       socket_connect4(3), socket_getifname(3)

                                                            socket_connect6(3)