Resolve #251 by correcting a duplicated response header

slack_bolt/oauth/async_oauth_flow.py

@@ -172,7 +172,6 @@ async def handle_installation(self, request: AsyncBoltRequest) -> BoltResponse:
                 body=html,
                 headers={
                     "Content-Type": "text/html; charset=utf-8",
-                    "Content-Length": len(bytes(html, "utf-8")),
                     "Set-Cookie": [set_cookie_value],
                 },
             )

slack_bolt/oauth/internals.py

@@ -42,7 +42,6 @@ def _build_callback_success_response(  # type: ignore
             status=200,
             headers={
                 "Content-Type": "text/html; charset=utf-8",
-                "Content-Length": len(bytes(html, "utf-8")),
                 "Set-Cookie": self._state_utils.build_set_cookie_for_deletion(),
             },
             body=html,
@@ -66,7 +65,6 @@ def _build_callback_failure_response(  # type: ignore
             status=status,
             headers={
                 "Content-Type": "text/html; charset=utf-8",
-                "Content-Length": len(bytes(html, "utf-8")),
                 "Set-Cookie": self._state_utils.build_set_cookie_for_deletion(),
             },
             body=html,

slack_bolt/oauth/oauth_flow.py

@@ -167,7 +167,6 @@ def handle_installation(self, request: BoltRequest) -> BoltResponse:
                 body=html,
                 headers={
                     "Content-Type": "text/html; charset=utf-8",
-                    "Content-Length": len(bytes(html, "utf-8")),
                     "Set-Cookie": [set_cookie_value],
                 },
             )

tests/adapter_tests/aws/test_aws_chalice.py

@@ -288,5 +288,4 @@ def install() -> Response:
         )
         assert response["statusCode"] == 200
         assert response["headers"]["content-type"] == "text/html; charset=utf-8"
-        assert response["headers"]["content-length"] == "565"
         assert "https://slack.com/oauth/v2/authorize?state=" in response.get("body")

tests/adapter_tests/aws/test_aws_lambda.py

@@ -305,7 +305,6 @@ def test_oauth(self):
         response = SlackRequestHandler(app).handle(event, self.context)
         assert response["statusCode"] == 200
         assert response["headers"]["content-type"] == "text/html; charset=utf-8"
-        assert response["headers"]["content-length"] == "565"
         assert response.get("body") is not None
 
         event = {
@@ -318,5 +317,4 @@ def test_oauth(self):
         response = SlackRequestHandler(app).handle(event, self.context)
         assert response["statusCode"] == 200
         assert response["headers"]["content-type"] == "text/html; charset=utf-8"
-        assert response["headers"]["content-length"] == "565"
         assert "https://slack.com/oauth/v2/authorize?state=" in response.get("body")

tests/adapter_tests/django/test_django.py

@@ -188,7 +188,6 @@ def test_oauth(self):
         response = SlackRequestHandler(app).handle(request)
         assert response.status_code == 200
         assert response.get("content-type") == "text/html; charset=utf-8"
-        assert response.get("content-length") == "565"
         assert "https://slack.com/oauth/v2/authorize?state=" in response.content.decode(
             "utf-8"
         )

tests/adapter_tests/starlette/test_fastapi.py

@@ -213,5 +213,4 @@ async def endpoint(req: Request):
         response = client.get("/slack/install", allow_redirects=False)
         assert response.status_code == 200
         assert response.headers.get("content-type") == "text/html; charset=utf-8"
-        assert response.headers.get("content-length") == "565"
         assert "https://slack.com/oauth/v2/authorize?state=" in response.text

tests/adapter_tests/starlette/test_starlette.py

@@ -222,5 +222,4 @@ async def endpoint(req: Request):
         response = client.get("/slack/install", allow_redirects=False)
         assert response.status_code == 200
         assert response.headers.get("content-type") == "text/html; charset=utf-8"
-        assert response.headers.get("content-length") == "565"
         assert "https://slack.com/oauth/v2/authorize?state=" in response.text

tests/slack_bolt/oauth/test_oauth_flow.py

@@ -56,7 +56,6 @@ def test_handle_installation_default(self):
         resp = oauth_flow.handle_installation(req)
         assert resp.status == 200
         assert resp.headers.get("content-type") == ["text/html; charset=utf-8"]
-        assert resp.headers.get("content-length") == ["576"]
         assert "https://slack.com/oauth/v2/authorize?state=" in resp.body
 
     # https://github.com/slackapi/bolt-python/issues/183

tests/slack_bolt/oauth/test_oauth_flow_sqlite3.py

@@ -41,7 +41,6 @@ def test_handle_installation(self):
         resp = oauth_flow.handle_installation(req)
         assert resp.status == 200
         assert resp.headers.get("content-type") == ["text/html; charset=utf-8"]
-        assert resp.headers.get("content-length") == ["565"]
         assert "https://slack.com/oauth/v2/authorize?state=" in resp.body
 
     def test_handle_callback(self):

tests/slack_bolt_async/oauth/test_async_oauth_flow.py

@@ -107,7 +107,6 @@ async def test_handle_installation_default(self):
         resp = await oauth_flow.handle_installation(req)
         assert resp.status == 200
         assert resp.headers.get("content-type") == ["text/html; charset=utf-8"]
-        assert resp.headers.get("content-length") == ["565"]
         assert "https://slack.com/oauth/v2/authorize?state=" in resp.body
 
     @pytest.mark.asyncio

tests/slack_bolt_async/oauth/test_async_oauth_flow_sqlite3.py

@@ -55,7 +55,6 @@ async def test_handle_installation(self):
         resp = await oauth_flow.handle_installation(req)
         assert resp.status == 200
         assert resp.headers.get("content-type") == ["text/html; charset=utf-8"]
-        assert resp.headers.get("content-length") == ["565"]
         assert "https://slack.com/oauth/v2/authorize?state=" in resp.body
 
     @pytest.mark.asyncio