available when configured at compile time.

This is a partial fix to the issue of servers disconnecting unexpectedly; in
this case the 421 says they are disconnecting, so we close the socket and
return the 421 in the appropriate error context.

Original patch by Mark Sapiro, updated by Kushal Das, with additional
tests by me.

This is a partial fix to the issue of servers disconnecting unexpectedly; in
this case the 421 says they are disconnecting, so we close the socket and
return the 421 in the appropriate error context.

Original patch by Mark Sapiro, updated by Kushal Das, with additional
tests by me.

ee30400efceb which updated the docstring.

tests that depend on filling up an OS pipe so that they work properly
on systems configured with large pipe buffers.

#17471 - Increasing the urllib.error test coverage. Bringing it to 100%. Based on patch contributed by Daniel Wozniak

Structured Exception Handling on windows.

specifically addresses a stack misalignment issue on x86 and issues
on some more recent platforms.

I have no idea how one would write a test for this.

Patch by July Tikhonov.