proto: required field "{Unknown}" not set

[Drew Wells]

I'm getting weird errors when attempting to make urlfetch calls out to third party services. Most disturbing is these errors show up raw in http responses and are invisible to my go app. When I deploy my app to a server, these calls work fine.

ERROR    2015-09-30 04:52:04,694 api_server.py:253] Exception while handling service_name: "urlfetch"

method: "Fetch"

request: "\010\001\0223https://fitkiq.test.makeplans.net/api/v1/resources/\033\"\nUser-Agent*&https://github.com/drewwells/makeplans\034\033\"\014Content-Type*\020application/json\034\033\"\006Accept*\020application/json\034\033\"\015Authorization*2Basic\0348\000H\000"

request_id: "gUCIIHqvsE"

Traceback (most recent call last):

  File "/opt/go_appengine/google/appengine/tools/devappserver2/api_server.py", line 228, in _handle_POST

    api_response = _execute_request(request).Encode()

  File "/opt/go_appengine/google/appengine/tools/devappserver2/api_server.py", line 186, in _execute_request

    make_request()

  File "/opt/go_appengine/google/appengine/tools/devappserver2/api_server.py", line 181, in make_request

    request_id)

  File "/opt/go_appengine/google/appengine/api/apiproxy_stub.py", line 131, in MakeSyncCall

    method(request, response)

  File "/opt/go_appengine/google/appengine/api/urlfetch_stub.py", line 236, in _Dynamic_Fetch

    validate_certificate=validate_certificate)

  File "/opt/go_appengine/google/appengine/api/urlfetch_stub.py", line 431, in _RetrieveURL

    connection.request(method, full_path, payload, adjusted_headers)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1053, in request

    self._send_request(method, url, body, headers)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1093, in _send_request

    self.endheaders(body)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1049, in endheaders

    self._send_output(message_body)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 893, in _send_output

    self.send(msg)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 855, in send

    self.connect()

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1274, in connect

    server_hostname=server_hostname)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ssl.py", line 352, in wrap_socket

    _context=self)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ssl.py", line 579, in __init__

    self.do_handshake()

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ssl.py", line 816, in do_handshake

    match_hostname(self.getpeercert(), self.server_hostname)

  File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ssl.py", line 271, in match_hostname

    % (hostname, ', '.join(map(repr, dnsnames))))

CertificateError: hostname 'fitkiq.test.makeplans.net' doesn't match either of '*.herokuapp.com', 'herokuapp.com'

[Drew Wells]

The cert error shouldn't be happening, I have disabled cert checking by doing this:

getHTTPCli = func(r *http.Request) *http.Client {

ctx := appengine.NewContext(r)

return &http.Client{

Transport: &urlfetch.Transport{

Context: ctx,

AllowInvalidServerCertificate: true,

[Christopher Hesse]

If the cert thing didn't fix your issue, you could try using the socket API instead: https://gist.github.com/christopherhesse/f33fb2f0b1441c5d1175

I had to use it to do DELETE requests with a body, and it seems to work fine.

[Drew Wells]

Hmm, good to know. 

I don't think that is my problem, if I set AllowInvalidServerCertificate to false there is a different error shown in the response. Also, the dev tools don't stack trace.

API error 6 (urlfetch: SSL_CERTIFICATE_ERROR): Host fitkiq.test.makeplans.net returned an invalid certificate (hostname mismatch)

setting it back to true... dev tools stacktrace and weird error in response

Get https://fitkiq.test.makeplans.net/api/v1/bookings: proto: required field "{Unknown}" not set

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[David Symonds]

Those errors certainly shouldn't be appearing in the urlfetch body
like that. Could you file an issue?

[Drew Wells]

Okay, I'll simplify my example and send it in

[Drew Wells]

Issue reported with repo case: https://code.google.com/p/googleappengine/issues/detail?id=12400&thanks=12400&ts=1444260995

On Tuesday, September 29, 2015 at 11:52:25 PM UTC-5, Drew Wells wrote: