[Asterisk-code-review] tcptls.c: refactor client connection to be more robust (asterisk[16])

[Kevin Harwell]

Attention is currently required from: Sean Bright.
Hello Sean Bright, Joshua Colp, George Joseph, Friendly Automation, 

I'd like you to reexamine a change. Please visit

    https://gerrit.asterisk.org/c/asterisk/+/17720

to look at the new patch set (#3).

Change subject: tcptls.c: refactor client connection to be more robust
......................................................................

tcptls.c: refactor client connection to be more robust

The current TCP client connect code, blocks and does not handle EINTR
error case.

This patch makes the client socket non-blocking while connecting,
ensures a connect does not immediately fail due to EINTR "errors",
and adds a connect timeout option.

The original client start call sets the new timeout option to
"infinite", thus making sure old, orginal behavior is retained.

ASTERISK-29746 #close

Change-Id: I907571843a83e43c0742b95a64785f4411f02671
---
M include/asterisk/tcptls.h
M main/tcptls.c
2 files changed, 100 insertions(+), 14 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/20/17720/3
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Gerrit-Project: asterisk
Gerrit-Branch: 16
Gerrit-Change-Id: I907571843a83e43c0742b95a64785f4411f02671
Gerrit-Change-Number: 17720
Gerrit-PatchSet: 3
Gerrit-Owner: Kevin Harwell <kharwell at digium.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at sangoma.com>
Gerrit-Reviewer: Sean Bright <sean at seanbright.com>
Gerrit-Attention: Sean Bright <sean at seanbright.com>
Gerrit-MessageType: newpatchset
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