We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Skill consumers should not be able to send Activities to skills without a recipient (Python)
See [parent](https://github.com/microsoft/botframework-sdk/issues/5785).

Issue may be specific to dotnet, need to verify if this is the case.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py`
Content:
```
1 # Copyright (c) Microsoft Corporation. All rights reserved.
2 # Licensed under the MIT License.
3 # pylint: disable=no-member
4 
5 import json
6 from typing import Dict
7 from logging import Logger
8 
9 import aiohttp
10 from botbuilder.core import InvokeResponse
11 from botbuilder.core.skills import BotFrameworkClient
12 from botbuilder.schema import (
13     Activity,
14     ExpectedReplies,
15     ConversationReference,
16     ConversationAccount,
17 )
18 from botframework.connector.auth import (
19     ChannelProvider,
20     CredentialProvider,
21     MicrosoftAppCredentials,
22     AppCredentials,
23     MicrosoftGovernmentAppCredentials,
24 )
25 
26 
27 class BotFrameworkHttpClient(BotFrameworkClient):
28 
29     """
30     A skill host adapter implements API to forward activity to a skill and
31     implements routing ChannelAPI calls from the Skill up through the bot/adapter.
32     """
33 
34     INVOKE_ACTIVITY_NAME = "SkillEvents.ChannelApiInvoke"
35     _BOT_IDENTITY_KEY = "BotIdentity"
36     _APP_CREDENTIALS_CACHE: Dict[str, MicrosoftAppCredentials] = {}
37 
38     def __init__(
39         self,
40         credential_provider: CredentialProvider,
41         channel_provider: ChannelProvider = None,
42         logger: Logger = None,
43     ):
44         if not credential_provider:
45             raise TypeError("credential_provider can't be None")
46 
47         self._credential_provider = credential_provider
48         self._channel_provider = channel_provider
49         self._logger = logger
50         self._session = aiohttp.ClientSession()
51 
52     async def post_activity(
53         self,
54         from_bot_id: str,
55         to_bot_id: str,
56         to_url: str,
57         service_url: str,
58         conversation_id: str,
59         activity: Activity,
60     ) -> InvokeResponse:
61         app_credentials = await self._get_app_credentials(from_bot_id, to_bot_id)
62 
63         if not app_credentials:
64             raise KeyError("Unable to get appCredentials to connect to the skill")
65 
66         # Get token for the skill call
67         token = (
68             app_credentials.get_access_token()
69             if app_credentials.microsoft_app_id
70             else None
71         )
72 
73         # Capture current activity settings before changing them.
74         original_conversation_id = activity.conversation.id
75         original_service_url = activity.service_url
76         original_relates_to = activity.relates_to
77 
78         try:
79             activity.relates_to = ConversationReference(
80                 service_url=activity.service_url,
81                 activity_id=activity.id,
82                 channel_id=activity.channel_id,
83                 conversation=ConversationAccount(
84                     id=activity.conversation.id,
85                     name=activity.conversation.name,
86                     conversation_type=activity.conversation.conversation_type,
87                     aad_object_id=activity.conversation.aad_object_id,
88                     is_group=activity.conversation.is_group,
89                     role=activity.conversation.role,
90                     tenant_id=activity.conversation.tenant_id,
91                     properties=activity.conversation.properties,
92                 ),
93                 bot=None,
94             )
95             activity.conversation.id = conversation_id
96             activity.service_url = service_url
97 
98             headers_dict = {
99                 "Content-type": "application/json; charset=utf-8",
100             }
101             if token:
102                 headers_dict.update(
103                     {"Authorization": f"Bearer {token}",}
104                 )
105 
106             json_content = json.dumps(activity.serialize())
107             resp = await self._session.post(
108                 to_url, data=json_content.encode("utf-8"), headers=headers_dict,
109             )
110             resp.raise_for_status()
111             data = (await resp.read()).decode()
112             content = json.loads(data) if data else None
113 
114             return InvokeResponse(status=resp.status, body=content)
115 
116         finally:
117             # Restore activity properties.
118             activity.conversation.id = original_conversation_id
119             activity.service_url = original_service_url
120             activity.relates_to = original_relates_to
121 
122     async def post_buffered_activity(
123         self,
124         from_bot_id: str,
125         to_bot_id: str,
126         to_url: str,
127         service_url: str,
128         conversation_id: str,
129         activity: Activity,
130     ) -> [Activity]:
131         """
132         Helper method to return a list of activities when an Activity is being
133         sent with DeliveryMode == expectReplies.
134         """
135         response = await self.post_activity(
136             from_bot_id, to_bot_id, to_url, service_url, conversation_id, activity
137         )
138         if not response or (response.status / 100) != 2:
139             return []
140         return ExpectedReplies().deserialize(response.body).activities
141 
142     async def _get_app_credentials(
143         self, app_id: str, oauth_scope: str
144     ) -> AppCredentials:
145         if not app_id:
146             return MicrosoftAppCredentials.empty()
147 
148         # in the cache?
149         cache_key = f"{app_id}{oauth_scope}"
150         app_credentials = BotFrameworkHttpClient._APP_CREDENTIALS_CACHE.get(cache_key)
151         if app_credentials:
152             return app_credentials
153 
154         # create a new AppCredentials
155         app_password = await self._credential_provider.get_app_password(app_id)
156 
157         app_credentials = (
158             MicrosoftGovernmentAppCredentials(app_id, app_password, scope=oauth_scope)
159             if self._credential_provider and self._channel_provider.is_government()
160             else MicrosoftAppCredentials(app_id, app_password, oauth_scope=oauth_scope)
161         )
162 
163         # put it in the cache
164         BotFrameworkHttpClient._APP_CREDENTIALS_CACHE[cache_key] = app_credentials
165 
166         return app_credentials
167
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py b/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py
--- a/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py
+++ b/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py
@@ -14,6 +14,7 @@
     ExpectedReplies,
     ConversationReference,
     ConversationAccount,
+    ChannelAccount,
 )
 from botframework.connector.auth import (
     ChannelProvider,
@@ -74,6 +75,7 @@
         original_conversation_id = activity.conversation.id
         original_service_url = activity.service_url
         original_relates_to = activity.relates_to
+        original_recipient = activity.recipient
 
         try:
             activity.relates_to = ConversationReference(
@@ -94,30 +96,38 @@
             )
             activity.conversation.id = conversation_id
             activity.service_url = service_url
+            if not activity.recipient:
+                activity.recipient = ChannelAccount()
 
-            headers_dict = {
-                "Content-type": "application/json; charset=utf-8",
-            }
-            if token:
-                headers_dict.update(
-                    {"Authorization": f"Bearer {token}",}
-                )
-
-            json_content = json.dumps(activity.serialize())
-            resp = await self._session.post(
-                to_url, data=json_content.encode("utf-8"), headers=headers_dict,
-            )
-            resp.raise_for_status()
-            data = (await resp.read()).decode()
-            content = json.loads(data) if data else None
+            status, content = await self._post_content(to_url, token, activity)
 
-            return InvokeResponse(status=resp.status, body=content)
+            return InvokeResponse(status=status, body=content)
 
         finally:
             # Restore activity properties.
             activity.conversation.id = original_conversation_id
             activity.service_url = original_service_url
             activity.relates_to = original_relates_to
+            activity.recipient = original_recipient
+
+    async def _post_content(
+        self, to_url: str, token: str, activity: Activity
+    ) -> (int, object):
+        headers_dict = {
+            "Content-type": "application/json; charset=utf-8",
+        }
+        if token:
+            headers_dict.update(
+                {"Authorization": f"Bearer {token}",}
+            )
+
+        json_content = json.dumps(activity.serialize())
+        resp = await self._session.post(
+            to_url, data=json_content.encode("utf-8"), headers=headers_dict,
+        )
+        resp.raise_for_status()
+        data = (await resp.read()).decode()
+        return resp.status, json.loads(data) if data else None
 
     async def post_buffered_activity(
         self,

{"golden_diff": "diff --git a/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py b/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py\n--- a/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py\n+++ b/libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py\n@@ -14,6 +14,7 @@\n     ExpectedReplies,\n     ConversationReference,\n     ConversationAccount,\n+    ChannelAccount,\n )\n from botframework.connector.auth import (\n     ChannelProvider,\n@@ -74,6 +75,7 @@\n         original_conversation_id = activity.conversation.id\n         original_service_url = activity.service_url\n         original_relates_to = activity.relates_to\n+        original_recipient = activity.recipient\n \n         try:\n             activity.relates_to = ConversationReference(\n@@ -94,30 +96,38 @@\n             )\n             activity.conversation.id = conversation_id\n             activity.service_url = service_url\n+            if not activity.recipient:\n+                activity.recipient = ChannelAccount()\n \n-            headers_dict = {\n-                \"Content-type\": \"application/json; charset=utf-8\",\n-            }\n-            if token:\n-                headers_dict.update(\n-                    {\"Authorization\": f\"Bearer {token}\",}\n-                )\n-\n-            json_content = json.dumps(activity.serialize())\n-            resp = await self._session.post(\n-                to_url, data=json_content.encode(\"utf-8\"), headers=headers_dict,\n-            )\n-            resp.raise_for_status()\n-            data = (await resp.read()).decode()\n-            content = json.loads(data) if data else None\n+            status, content = await self._post_content(to_url, token, activity)\n \n-            return InvokeResponse(status=resp.status, body=content)\n+            return InvokeResponse(status=status, body=content)\n \n         finally:\n             # Restore activity properties.\n             activity.conversation.id = original_conversation_id\n             activity.service_url = original_service_url\n             activity.relates_to = original_relates_to\n+            activity.recipient = original_recipient\n+\n+    async def _post_content(\n+        self, to_url: str, token: str, activity: Activity\n+    ) -> (int, object):\n+        headers_dict = {\n+            \"Content-type\": \"application/json; charset=utf-8\",\n+        }\n+        if token:\n+            headers_dict.update(\n+                {\"Authorization\": f\"Bearer {token}\",}\n+            )\n+\n+        json_content = json.dumps(activity.serialize())\n+        resp = await self._session.post(\n+            to_url, data=json_content.encode(\"utf-8\"), headers=headers_dict,\n+        )\n+        resp.raise_for_status()\n+        data = (await resp.read()).decode()\n+        return resp.status, json.loads(data) if data else None\n \n     async def post_buffered_activity(\n         self,\n", "issue": "Skill consumers should not be able to send Activities to skills without a recipient (Python)\nSee [parent](https://github.com/microsoft/botframework-sdk/issues/5785).\r\n\r\nIssue may be specific to dotnet, need to verify if this is the case.\n", "before_files": [{"content": "# Copyright (c) Microsoft Corporation. All rights reserved.\n# Licensed under the MIT License.\n# pylint: disable=no-member\n\nimport json\nfrom typing import Dict\nfrom logging import Logger\n\nimport aiohttp\nfrom botbuilder.core import InvokeResponse\nfrom botbuilder.core.skills import BotFrameworkClient\nfrom botbuilder.schema import (\n    Activity,\n    ExpectedReplies,\n    ConversationReference,\n    ConversationAccount,\n)\nfrom botframework.connector.auth import (\n    ChannelProvider,\n    CredentialProvider,\n    MicrosoftAppCredentials,\n    AppCredentials,\n    MicrosoftGovernmentAppCredentials,\n)\n\n\nclass BotFrameworkHttpClient(BotFrameworkClient):\n\n    \"\"\"\n    A skill host adapter implements API to forward activity to a skill and\n    implements routing ChannelAPI calls from the Skill up through the bot/adapter.\n    \"\"\"\n\n    INVOKE_ACTIVITY_NAME = \"SkillEvents.ChannelApiInvoke\"\n    _BOT_IDENTITY_KEY = \"BotIdentity\"\n    _APP_CREDENTIALS_CACHE: Dict[str, MicrosoftAppCredentials] = {}\n\n    def __init__(\n        self,\n        credential_provider: CredentialProvider,\n        channel_provider: ChannelProvider = None,\n        logger: Logger = None,\n    ):\n        if not credential_provider:\n            raise TypeError(\"credential_provider can't be None\")\n\n        self._credential_provider = credential_provider\n        self._channel_provider = channel_provider\n        self._logger = logger\n        self._session = aiohttp.ClientSession()\n\n    async def post_activity(\n        self,\n        from_bot_id: str,\n        to_bot_id: str,\n        to_url: str,\n        service_url: str,\n        conversation_id: str,\n        activity: Activity,\n    ) -> InvokeResponse:\n        app_credentials = await self._get_app_credentials(from_bot_id, to_bot_id)\n\n        if not app_credentials:\n            raise KeyError(\"Unable to get appCredentials to connect to the skill\")\n\n        # Get token for the skill call\n        token = (\n            app_credentials.get_access_token()\n            if app_credentials.microsoft_app_id\n            else None\n        )\n\n        # Capture current activity settings before changing them.\n        original_conversation_id = activity.conversation.id\n        original_service_url = activity.service_url\n        original_relates_to = activity.relates_to\n\n        try:\n            activity.relates_to = ConversationReference(\n                service_url=activity.service_url,\n                activity_id=activity.id,\n                channel_id=activity.channel_id,\n                conversation=ConversationAccount(\n                    id=activity.conversation.id,\n                    name=activity.conversation.name,\n                    conversation_type=activity.conversation.conversation_type,\n                    aad_object_id=activity.conversation.aad_object_id,\n                    is_group=activity.conversation.is_group,\n                    role=activity.conversation.role,\n                    tenant_id=activity.conversation.tenant_id,\n                    properties=activity.conversation.properties,\n                ),\n                bot=None,\n            )\n            activity.conversation.id = conversation_id\n            activity.service_url = service_url\n\n            headers_dict = {\n                \"Content-type\": \"application/json; charset=utf-8\",\n            }\n            if token:\n                headers_dict.update(\n                    {\"Authorization\": f\"Bearer {token}\",}\n                )\n\n            json_content = json.dumps(activity.serialize())\n            resp = await self._session.post(\n                to_url, data=json_content.encode(\"utf-8\"), headers=headers_dict,\n            )\n            resp.raise_for_status()\n            data = (await resp.read()).decode()\n            content = json.loads(data) if data else None\n\n            return InvokeResponse(status=resp.status, body=content)\n\n        finally:\n            # Restore activity properties.\n            activity.conversation.id = original_conversation_id\n            activity.service_url = original_service_url\n            activity.relates_to = original_relates_to\n\n    async def post_buffered_activity(\n        self,\n        from_bot_id: str,\n        to_bot_id: str,\n        to_url: str,\n        service_url: str,\n        conversation_id: str,\n        activity: Activity,\n    ) -> [Activity]:\n        \"\"\"\n        Helper method to return a list of activities when an Activity is being\n        sent with DeliveryMode == expectReplies.\n        \"\"\"\n        response = await self.post_activity(\n            from_bot_id, to_bot_id, to_url, service_url, conversation_id, activity\n        )\n        if not response or (response.status / 100) != 2:\n            return []\n        return ExpectedReplies().deserialize(response.body).activities\n\n    async def _get_app_credentials(\n        self, app_id: str, oauth_scope: str\n    ) -> AppCredentials:\n        if not app_id:\n            return MicrosoftAppCredentials.empty()\n\n        # in the cache?\n        cache_key = f\"{app_id}{oauth_scope}\"\n        app_credentials = BotFrameworkHttpClient._APP_CREDENTIALS_CACHE.get(cache_key)\n        if app_credentials:\n            return app_credentials\n\n        # create a new AppCredentials\n        app_password = await self._credential_provider.get_app_password(app_id)\n\n        app_credentials = (\n            MicrosoftGovernmentAppCredentials(app_id, app_password, scope=oauth_scope)\n            if self._credential_provider and self._channel_provider.is_government()\n            else MicrosoftAppCredentials(app_id, app_password, oauth_scope=oauth_scope)\n        )\n\n        # put it in the cache\n        BotFrameworkHttpClient._APP_CREDENTIALS_CACHE[cache_key] = app_credentials\n\n        return app_credentials\n", "path": "libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py"}], "after_files": [{"content": "# Copyright (c) Microsoft Corporation. All rights reserved.\n# Licensed under the MIT License.\n# pylint: disable=no-member\n\nimport json\nfrom typing import Dict\nfrom logging import Logger\n\nimport aiohttp\nfrom botbuilder.core import InvokeResponse\nfrom botbuilder.core.skills import BotFrameworkClient\nfrom botbuilder.schema import (\n    Activity,\n    ExpectedReplies,\n    ConversationReference,\n    ConversationAccount,\n    ChannelAccount,\n)\nfrom botframework.connector.auth import (\n    ChannelProvider,\n    CredentialProvider,\n    MicrosoftAppCredentials,\n    AppCredentials,\n    MicrosoftGovernmentAppCredentials,\n)\n\n\nclass BotFrameworkHttpClient(BotFrameworkClient):\n\n    \"\"\"\n    A skill host adapter implements API to forward activity to a skill and\n    implements routing ChannelAPI calls from the Skill up through the bot/adapter.\n    \"\"\"\n\n    INVOKE_ACTIVITY_NAME = \"SkillEvents.ChannelApiInvoke\"\n    _BOT_IDENTITY_KEY = \"BotIdentity\"\n    _APP_CREDENTIALS_CACHE: Dict[str, MicrosoftAppCredentials] = {}\n\n    def __init__(\n        self,\n        credential_provider: CredentialProvider,\n        channel_provider: ChannelProvider = None,\n        logger: Logger = None,\n    ):\n        if not credential_provider:\n            raise TypeError(\"credential_provider can't be None\")\n\n        self._credential_provider = credential_provider\n        self._channel_provider = channel_provider\n        self._logger = logger\n        self._session = aiohttp.ClientSession()\n\n    async def post_activity(\n        self,\n        from_bot_id: str,\n        to_bot_id: str,\n        to_url: str,\n        service_url: str,\n        conversation_id: str,\n        activity: Activity,\n    ) -> InvokeResponse:\n        app_credentials = await self._get_app_credentials(from_bot_id, to_bot_id)\n\n        if not app_credentials:\n            raise KeyError(\"Unable to get appCredentials to connect to the skill\")\n\n        # Get token for the skill call\n        token = (\n            app_credentials.get_access_token()\n            if app_credentials.microsoft_app_id\n            else None\n        )\n\n        # Capture current activity settings before changing them.\n        original_conversation_id = activity.conversation.id\n        original_service_url = activity.service_url\n        original_relates_to = activity.relates_to\n        original_recipient = activity.recipient\n\n        try:\n            activity.relates_to = ConversationReference(\n                service_url=activity.service_url,\n                activity_id=activity.id,\n                channel_id=activity.channel_id,\n                conversation=ConversationAccount(\n                    id=activity.conversation.id,\n                    name=activity.conversation.name,\n                    conversation_type=activity.conversation.conversation_type,\n                    aad_object_id=activity.conversation.aad_object_id,\n                    is_group=activity.conversation.is_group,\n                    role=activity.conversation.role,\n                    tenant_id=activity.conversation.tenant_id,\n                    properties=activity.conversation.properties,\n                ),\n                bot=None,\n            )\n            activity.conversation.id = conversation_id\n            activity.service_url = service_url\n            if not activity.recipient:\n                activity.recipient = ChannelAccount()\n\n            status, content = await self._post_content(to_url, token, activity)\n\n            return InvokeResponse(status=status, body=content)\n\n        finally:\n            # Restore activity properties.\n            activity.conversation.id = original_conversation_id\n            activity.service_url = original_service_url\n            activity.relates_to = original_relates_to\n            activity.recipient = original_recipient\n\n    async def _post_content(\n        self, to_url: str, token: str, activity: Activity\n    ) -> (int, object):\n        headers_dict = {\n            \"Content-type\": \"application/json; charset=utf-8\",\n        }\n        if token:\n            headers_dict.update(\n                {\"Authorization\": f\"Bearer {token}\",}\n            )\n\n        json_content = json.dumps(activity.serialize())\n        resp = await self._session.post(\n            to_url, data=json_content.encode(\"utf-8\"), headers=headers_dict,\n        )\n        resp.raise_for_status()\n        data = (await resp.read()).decode()\n        return resp.status, json.loads(data) if data else None\n\n    async def post_buffered_activity(\n        self,\n        from_bot_id: str,\n        to_bot_id: str,\n        to_url: str,\n        service_url: str,\n        conversation_id: str,\n        activity: Activity,\n    ) -> [Activity]:\n        \"\"\"\n        Helper method to return a list of activities when an Activity is being\n        sent with DeliveryMode == expectReplies.\n        \"\"\"\n        response = await self.post_activity(\n            from_bot_id, to_bot_id, to_url, service_url, conversation_id, activity\n        )\n        if not response or (response.status / 100) != 2:\n            return []\n        return ExpectedReplies().deserialize(response.body).activities\n\n    async def _get_app_credentials(\n        self, app_id: str, oauth_scope: str\n    ) -> AppCredentials:\n        if not app_id:\n            return MicrosoftAppCredentials.empty()\n\n        # in the cache?\n        cache_key = f\"{app_id}{oauth_scope}\"\n        app_credentials = BotFrameworkHttpClient._APP_CREDENTIALS_CACHE.get(cache_key)\n        if app_credentials:\n            return app_credentials\n\n        # create a new AppCredentials\n        app_password = await self._credential_provider.get_app_password(app_id)\n\n        app_credentials = (\n            MicrosoftGovernmentAppCredentials(app_id, app_password, scope=oauth_scope)\n            if self._credential_provider and self._channel_provider.is_government()\n            else MicrosoftAppCredentials(app_id, app_password, oauth_scope=oauth_scope)\n        )\n\n        # put it in the cache\n        BotFrameworkHttpClient._APP_CREDENTIALS_CACHE[cache_key] = app_credentials\n\n        return app_credentials\n", "path": "libraries/botbuilder-integration-aiohttp/botbuilder/integration/aiohttp/bot_framework_http_client.py"}]}