netsender POST requests fail when talking to dev_appserver.py

[Alan Noble]

POSTing data to dev_appserver.py using http.Client fails with the following message:

Unsolicited response received on idle HTTP channel starting with "HTTP/1.1 400 Bad Request

Note, this is NOT returned as a Go error, but simply spewed to stdout by Go's default logger.

Whether a bug in Go or a bug in devappserver.py is moot, since it is blocking standalone testing of our App Engine services.

[kortschak]

I have a strong suspicion this is the same as bitbucket.org/ausocean/av/issues/11 (I'd like to write ausocean/av#11, but that doesn't work); that issue also related to POST. In the related email discussion (starting 2018-12-11) I linked that to https://github.com/golang/go/issues/18117. See this code.

If that is the case, the fix (for want of a better word) it to buffer the write into a *bytes.Buffer and use that io.Reader to hand to the POST. Alternatively, find where in dev_appserver.py it's misunderestimating the length of the body.

[Alan Noble]

Added dev_appserver/POST workaround in httpRequest which addresses Issue #11.

→ <<cset 0b4242fd094e>>

[Alan Noble]

Fixed in https://bitbucket.org/ausocean/iot/pull-requests/38