If you are using this method to observe when multiple requests are
made on the same persistent HTTP connection (eg, as the ntlm-test
test program does), you will need to pay attention to socket
destruction as well (eg, by using weak references), so that you do
not get fooled when the allocator reuses the memory address of a
previously-destroyed socket to represent a new socket.
Retrieves the gio.socket.Socket that msg is associated with.
If you are using this method to observe when multiple requests are made on the same persistent HTTP connection (eg, as the ntlm-test test program does), you will need to pay attention to socket destruction as well (eg, by using weak references), so that you do not get fooled when the allocator reuses the memory address of a previously-destroyed socket to represent a new socket.