Set Server header in SynapseRequest

(instead of everywhere that writes a response. Or rather, the subset of places
which write responses where we haven't forgotten it).

This also means that we don't have to have the mysterious version_string
attribute in anything with a request handler.

Unfortunately it does mean that we have to pass the version string wherever we
instantiate a SynapseSite, which has been c&ped 150 times, but that is code
that ought to be cleaned up anyway really.

9 files changed, 1 insertions, 14 deletions

diff --git a/synapse/rest/client/v1/pusher.py b/synapse/rest/client/v1/pusher.py
index 0206e664c1..40e523cc5f 100644
--- a/synapse/rest/client/v1/pusher.py
+++ b/synapse/rest/client/v1/pusher.py
@@ -176,7 +176,6 @@ class PushersRemoveRestServlet(RestServlet):
 
         request.setResponseCode(200)
         request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
-        request.setHeader(b"Server", self.hs.version_string)
         request.setHeader(b"Content-Length", b"%d" % (
             len(PushersRemoveRestServlet.SUCCESS_HTML),
         ))
diff --git a/synapse/rest/client/v2_alpha/auth.py b/synapse/rest/client/v2_alpha/auth.py
index 8e5577148f..d6f3a19648 100644
--- a/synapse/rest/client/v2_alpha/auth.py
+++ b/synapse/rest/client/v2_alpha/auth.py
@@ -129,7 +129,6 @@ class AuthRestServlet(RestServlet):
             html_bytes = html.encode("utf8")
             request.setResponseCode(200)
             request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
-            request.setHeader(b"Server", self.hs.version_string)
             request.setHeader(b"Content-Length", b"%d" % (len(html_bytes),))
 
             request.write(html_bytes)
@@ -175,7 +174,6 @@ class AuthRestServlet(RestServlet):
             html_bytes = html.encode("utf8")
             request.setResponseCode(200)
             request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
-            request.setHeader(b"Server", self.hs.version_string)
             request.setHeader(b"Content-Length", b"%d" % (len(html_bytes),))
 
             request.write(html_bytes)
diff --git a/synapse/rest/key/v1/server_key_resource.py b/synapse/rest/key/v1/server_key_resource.py
index bd4fea5774..1498d188c1 100644
--- a/synapse/rest/key/v1/server_key_resource.py
+++ b/synapse/rest/key/v1/server_key_resource.py
@@ -49,7 +49,6 @@ class LocalKey(Resource):
     """
 
     def __init__(self, hs):
-        self.version_string = hs.version_string
         self.response_body = encode_canonical_json(
             self.response_json_object(hs.config)
         )
@@ -84,7 +83,6 @@ class LocalKey(Resource):
     def render_GET(self, request):
         return respond_with_json_bytes(
             request, 200, self.response_body,
-            version_string=self.version_string
         )
 
     def getChild(self, name, request):
diff --git a/synapse/rest/key/v2/local_key_resource.py b/synapse/rest/key/v2/local_key_resource.py
index be68d9a096..04775b3c45 100644
--- a/synapse/rest/key/v2/local_key_resource.py
+++ b/synapse/rest/key/v2/local_key_resource.py
@@ -63,7 +63,6 @@ class LocalKey(Resource):
     isLeaf = True
 
     def __init__(self, hs):
-        self.version_string = hs.version_string
         self.config = hs.config
         self.clock = hs.clock
         self.update_response_body(self.clock.time_msec())
@@ -115,5 +114,4 @@ class LocalKey(Resource):
             self.update_response_body(time_now)
         return respond_with_json_bytes(
             request, 200, self.response_body,
-            version_string=self.version_string
         )
diff --git a/synapse/rest/key/v2/remote_key_resource.py b/synapse/rest/key/v2/remote_key_resource.py
index 17b3077926..21b4c1175e 100644
--- a/synapse/rest/key/v2/remote_key_resource.py
+++ b/synapse/rest/key/v2/remote_key_resource.py
@@ -93,7 +93,6 @@ class RemoteKey(Resource):
     def __init__(self, hs):
         self.keyring = hs.get_keyring()
         self.store = hs.get_datastore()
-        self.version_string = hs.version_string
         self.clock = hs.get_clock()
         self.federation_domain_whitelist = hs.config.federation_domain_whitelist
 
@@ -242,5 +241,4 @@ class RemoteKey(Resource):
 
             respond_with_json_bytes(
                 request, 200, result_io.getvalue(),
-                version_string=self.version_string
             )
diff --git a/synapse/rest/media/v1/download_resource.py b/synapse/rest/media/v1/download_resource.py
index 3fc3f64d62..8cf8820c31 100644
--- a/synapse/rest/media/v1/download_resource.py
+++ b/synapse/rest/media/v1/download_resource.py
@@ -37,9 +37,8 @@ class DownloadResource(Resource):
         self.media_repo = media_repo
         self.server_name = hs.hostname
 
-        # Both of these are expected by @request_handler()
+        # this is expected by @wrap_json_request_handler
         self.clock = hs.get_clock()
-        self.version_string = hs.version_string
 
     def render_GET(self, request):
         self._async_render_GET(request)
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 6b089689b4..2839207abc 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -58,7 +58,6 @@ class PreviewUrlResource(Resource):
 
         self.auth = hs.get_auth()
         self.clock = hs.get_clock()
-        self.version_string = hs.version_string
         self.filepaths = media_repo.filepaths
         self.max_spider_size = hs.config.max_spider_size
         self.server_name = hs.hostname
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index 6c12d79f56..aae6e464e8 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -44,7 +44,6 @@ class ThumbnailResource(Resource):
         self.media_storage = media_storage
         self.dynamic_thumbnails = hs.config.dynamic_thumbnails
         self.server_name = hs.hostname
-        self.version_string = hs.version_string
         self.clock = hs.get_clock()
 
     def render_GET(self, request):
diff --git a/synapse/rest/media/v1/upload_resource.py b/synapse/rest/media/v1/upload_resource.py
index 7d01c57fd1..7567476fce 100644
--- a/synapse/rest/media/v1/upload_resource.py
+++ b/synapse/rest/media/v1/upload_resource.py
@@ -41,7 +41,6 @@ class UploadResource(Resource):
         self.server_name = hs.hostname
         self.auth = hs.get_auth()
         self.max_upload_size = hs.config.max_upload_size
-        self.version_string = hs.version_string
         self.clock = hs.get_clock()
 
     def render_POST(self, request):