Fix Server Hang in Pypy for Invalid Cert

In pypy, the server was hanging for requests with invalid certs.  It
looks like this might have been happening in older versions of python
2.7 as well.  Anyway, I added a timeout to the socket and that seems to
have fixed the issue.

Author: kevin1024

pytest_httpbin/serve.py

@@ -60,6 +60,7 @@ def finish_request(self, request, client_address):
         """
         Negotiates SSL and then mimics BaseServer behavior.
         """
+        request.settimeout(1.0)
         ssock = ssl.wrap_socket(
             request,
             keyfile=os.path.join(CERT_DIR, 'key.pem'),

runtests.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 
-py.test
+py.test $1

tests/test_server.py

@@ -3,6 +3,7 @@
 # vim: set fileencoding=utf8 :
 
 import requests
+import pytest
 from util import get_raw_http_response
 
 
@@ -35,3 +36,17 @@ def test_server_should_be_http_1_1(httpbin):
     """
     resp = get_raw_http_response(httpbin.host, httpbin.port, '/get')
     assert resp.startswith(b'HTTP/1.1')
+
+def test_dont_crash_on_certificate_problems(httpbin_secure):
+    with pytest.raises(Exception):
+        # this request used to hang
+        requests.get(
+            httpbin_secure + '/get',
+            verify = True,
+            cert=__file__
+        )
+    # and this request would never happen
+    requests.get(
+        httpbin_secure + '/get',
+        verify = True,
+    )