Make network processes synchronous

[wynro]

• Fixes Error when run emacs-web-server #8

Given some changes in the Emacs networking code, this change makes the network process synchronous. It is also necessary for the server to work properly.

Extract from the changelog

The networking code has been reworked so that it's more
asynchronous than it was (when specifying :nowait t in 'make-network-process').
How asynchronous it is varies based on the capabilities of the system, 
but on a typical GNU/Linux system the DNS
resolution, the connection, and (for TLS streams) the TLS negotiation
are all done without blocking the main Emacs thread.  To get
asynchronous TLS, the TLS boot parameters have to be passed in 
(see the manual for details).

[dakra]

Friendly bump :)

[juergenhoetzel]

Also friedly bump 🐛
ancane/markdown-preview-mode#33

[eschulte]

Thanks for the merge request. I have a couple of questions.

1. Could the value in ws-content-types have been pulled from somewhere else in Emacs (e.g., from somewhere in the gnus or message code)? I'd rather not create a second copy of a list that I expect is already better maintained elsewhere.

2. What are the effects of removing the :nowait t flag from the call to make-network-process?

[eschulte]

Maybe instead of removing :nowait t it would be better to make this flag conditional on the Emacs version.

[dakra]

ping @wynro

[eschulte]

I've merged half of this pull request (1 of 2 commits). I'm still not comfortable committing the mime types as I'd rather just require that information from wherever else it must be defined in Emacs. I don't want to have to maintain a new list of mime types.

[wynro]

@eschulte Fully agree. I wanted to separate this and pull-request only the second commit but I forgot, sorry.

In any case, now that the relevant piece is merged I'll close the pull request

[dakra]

@eschulte thanks 🎉