add ipv6 support by setting address family (pasteorg#50)

* add ipv6 support by setting address family

paste/httpserver.py

@@ -1289,13 +1289,39 @@ def serve(application, host=None, port=None, handler=None, ssl_pem=None,
                 ssl_context.use_certificate_chain_file(ssl_pem)
 
     host = host or '127.0.0.1'
+    is_ipv6 = False
+    if host.count(':') > 1  or '[' in host :
+        is_ipv6 = True
+
     if port is None:
-        if ':' in host:
+
+        if ':' in host and is_ipv6 is False:
             host, port = host.split(':', 1)
+        elif is_ipv6 and ']' in host:
+
+            idx = host.find(']')
+            if (idx < (len(host) - 1)) and (host[(idx+1)] == ':'):
+                # check if the next position is ':', if so, split and grab the port
+
+                host, port = host.rsplit(':', 1)
+                host = host.strip('[').strip(']')
+
+            else :
+
+                port = 8080
         else:
+
             port = 8080
+    #strip '[' and ']' in host
+    host = host.strip('[').strip(']')
     server_address = (host, int(port))
 
+    if is_ipv6:
+        # set address family
+        HTTPServer.address_family = socket.AF_INET6
+    else:
+        HTTPServer.address_family = socket.AF_INET
+
     if not handler:
         handler = WSGIHandler
     if server_version:

tests/test_httpserver.py

@@ -4,7 +4,7 @@
 
 import six
 
-from paste.httpserver import LimitedLengthFile, WSGIHandler
+from paste.httpserver import LimitedLengthFile, WSGIHandler, serve
 from six.moves import StringIO
 
 
@@ -72,3 +72,62 @@ def test_limited_length_file_tell_on_socket():
     assert f.read() == b'123456789'
     assert f.tell() == 10
     backing_read.close()
+
+
+def test_address_family_v4():
+    #ipv4
+    app = None
+    host = '127.0.0.1'
+    port = '9090'
+
+    svr = serve(app, host=host, port=port, start_loop=False, use_threadpool=False)
+
+    af = svr.address_family
+    addr = svr.server_address
+    p = svr.server_port
+
+    svr.server_close()
+
+    assert (af == socket.AF_INET)
+    assert (addr[0] == '127.0.0.1')
+    assert (str(p) == port)
+
+
+def test_address_family_v4_host_and_port():
+    #ipv4
+    app = None
+    host = '127.0.0.1:9091'
+
+    svr = serve(app, host=host, start_loop=False, use_threadpool=False)
+
+    af = svr.address_family
+    addr = svr.server_address
+    p = svr.server_port
+
+    svr.server_close()
+
+    assert (af == socket.AF_INET)
+    assert (addr[0] == '127.0.0.1')
+    assert (str(p) == '9091')
+
+def test_address_family_v6():
+    #ipv6
+    app = None
+    host = '[::1]'
+    port = '9090'
+
+    try:
+        svr = serve(app, host=host, port=port, start_loop=False, use_threadpool=False)
+
+        af = svr.address_family
+        addr = svr.server_address
+        p = svr.server_port
+
+        svr.server_close()
+
+        assert (af == socket.AF_INET6)
+        assert (addr[0] == '::1')
+        assert (str(p) == port)
+    except (socket.error, OSError) as err:
+        # v6 support not available in this OS, pass the test
+        assert True