From fa6b20617ef2c0ee68e2415d348c04839a792e4e Mon Sep 17 00:00:00 2001
From: Sam O'Connor <sam@octech.com.au>
Date: Mon, 16 Apr 2018 15:57:04 +1000
Subject: [PATCH] Reinstate `yield()` after `@async writebody(...)`.

Was removed in b602c4ea0cf346b35ae9bea13db2c960eee759de :

> Remove yeild() after @async writebody. This should increase the chance
> that the startread() realises that the connection is dead before the
> body is written.

This change appears to have caused problems in other situations:
https://github.com/samoconnor/AWSS3.jl/issues/26#issuecomment-378206352

The removal was driven by nanosoldier/GitHub.jl issues with POST
requests on long-held connections.
https://github.com/JuliaWeb/HTTP.jl/issues/220#issuecomment-376710381

GitHub.jl now handles this with the `idle_timeout=` option.
https://github.com/JuliaWeb/GitHub.jl/pull/109
---
 src/StreamRequest.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/StreamRequest.jl b/src/StreamRequest.jl
index 2013ee502..d0fc31c80 100644
--- a/src/StreamRequest.jl
+++ b/src/StreamRequest.jl
@@ -54,6 +54,7 @@ function request(::Type{StreamLayer}, io::IO, request::Request, body;
 
             if iofunction == nothing
                 @async writebody(http, request, body)
+                yield()
                 startread(http)
                 readbody(http, response, response_stream)
             else