NAME
          open_socket - opens server socket and starts listening

     SYNOPSIS
          #include "types.h"
          #include "channel.h"

          Socket *open_socket(int port,int wait);


     DESCRIPTION
          The arguments of open_socket are:

          port Set port number of TCP/IP connection.

          wait Set maximum time to wait for connection (sec). If zero
               wait for unlimited time.

     RETURN VALUE
          Pointer to socket is returned on success and NULL in case of
          failure.

     AUTHOR
          Werner von Bloh (bloh@pik-potsdam.de)

     SEE ALSO
          close_socket(3), connect_socket(3)


























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