+1

String comes from the server directly, so probably needs some data from Evolution itself in another string.

What string? "Connection refused" might come from the OS but it certainly doesn't come from the server.

Created attachment 230548 [details] [review]
eds patch

for evolution-data-server;

This adds the port/service name into the "Cannot connect to" error. If it cannot determine the service name, it uses "???", though there should be port numbers always available these days.

Created commit 214c668 in eds master (3.7.3+)