Connecting to the Server

After declaring its variables, call_server() first makes a connection with the server:

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if ((s = connect_to_server(host, port)) < 0)
     return -1;

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where s is a file descriptor (an int, initially returned by a call to socket()).

connect_to_server() is a simple function that uses sockets to create a connection. Because it doesn't use the GSS-API, it's skipped here. You can see it at connect_to_server().