Httpheaders (#1638)

* feat: pass throught custom http headers as transport configuration

* chore: simplify and add argument check for rawsocket mode

* fix: is not None

* fix: flake8 accepted formatting

---------

Co-authored-by: Johannes Dröge <code@fungs.de>

autobahn/wamp/component.py

@@ -120,7 +120,7 @@ def _create_transport(index, transport, check_native_endpoint=None):
     valid_transport_keys = [
         'type', 'url', 'endpoint', 'serializer', 'serializers', 'options',
         'max_retries', 'max_retry_delay', 'initial_retry_delay',
-        'retry_delay_growth', 'retry_delay_jitter', 'proxy',
+        'retry_delay_growth', 'retry_delay_jitter', 'proxy', 'headers'
     ]
     for k in transport.keys():
         if k not in valid_transport_keys:
@@ -161,6 +161,8 @@ def _create_transport(index, transport, check_native_endpoint=None):
                 'options must be a dict, not {}'.format(type(options))
             )
 
+    headers = transport.get("headers")
+
     if kind == 'websocket':
         for key in ['url']:
             if key not in transport:
@@ -227,6 +229,8 @@ def _create_transport(index, transport, check_native_endpoint=None):
             endpoint_config = transport['endpoint']
         if 'serializers' in transport:
             raise ValueError("'serializers' is only for websocket; use 'serializer'")
+        if headers is not None:
+            raise ValueError("'headers' not supported for rawsocket transport")
         # always a list; len == 1 for rawsocket
         if 'serializer' in transport:
             if not isinstance(transport['serializer'], (str, str)):
@@ -252,6 +256,7 @@ def _create_transport(index, transport, check_native_endpoint=None):
         serializers=serializer_config,
         proxy=proxy,
         options=options,
+        headers=headers,
         **kw
     )
 
@@ -268,7 +273,8 @@ def __init__(self, idx, kind, url, endpoint, serializers,
                  retry_delay_growth=1.5,
                  retry_delay_jitter=0.1,
                  proxy=None,
-                 options=None):
+                 options=None,
+                 headers=None):
         """
         """
         if options is None:
@@ -279,6 +285,7 @@ def __init__(self, idx, kind, url, endpoint, serializers,
         self.url = url
         self.endpoint = endpoint
         self.options = options
+        self.headers = headers
 
         self.serializers = serializers
         if self.type == 'rawsocket' and len(serializers) != 1: