Output warning info to log fp using logging methods

libpathod/pathoc.py

@@ -218,8 +218,12 @@ class Pathoc(tcp.TCPClient):
 
         if self.use_http2:
             if not OpenSSL._util.lib.Cryptography_HAS_ALPN:  # pragma: nocover
-                print >> sys.stderr, "HTTP/2 requires ALPN support. Please use OpenSSL >= 1.0.2."
-                print >> sys.stderr, "Pathoc might not be working as expected without ALPN."
+                log.write(
+                    self.fp,
+                    "HTTP/2 requires ALPN support. "
+                    "Please use OpenSSL >= 1.0.2. "
+                    "Pathoc might not be working as expected without ALPN."
+                )
             self.protocol = http2.HTTP2Protocol(self)
         else:
             # TODO: create HTTP or Websockets protocol

libpathod/pathod.py

@@ -314,7 +314,6 @@ class PathodHandler(tcp.BaseHandler):
                             self.server.craftanchor
                         )])
 
-
             if anchor_gen:
                 spec = anchor_gen.next()
 

test/test_pathoc.py

@@ -123,10 +123,12 @@ class TestDaemonSSL(_TestDaemon):
         assert d["log"][0]["request"]["clientcert"]["keyinfo"]
 
     def test_http2_without_ssl(self):
+        fp = cStringIO.StringIO()
         c = pathoc.Pathoc(
             ("127.0.0.1", self.d.port),
             use_http2=True,
             ssl=False,
+            fp = fp
         )
         tutils.raises(NotImplementedError, c.connect)