fix: upgraded to 1.2.1, and added a troubleshooting tip (#392)

fix: upgraded to 1.2.1, and added a troubleshooting tip

Author: kazunori279

docs/streaming/custom-streaming-ws.md

@@ -11,6 +11,8 @@ In order to use voice/video streaming in ADK, you will need to use Gemini models
 - [Google AI Studio: Gemini Live API](https://ai.google.dev/gemini-api/docs/models#live-api)
 - [Vertex AI: Gemini Live API](https://cloud.google.com/vertex-ai/generative-ai/docs/live-api)
 
+There is also a [SSE](custom-streaming.md) version of the sample is available.
+
 ## 1. Install ADK {#1.-setup-installation}
 
 Create & Activate Virtual Environment (Recommended):
@@ -27,7 +29,7 @@ python -m venv .venv
 Install ADK:
 
 ```bash
-pip install google-adk==1.0.0
+pip install --upgrade google-adk==1.2.1
 ```
 
 Set `SSL_CERT_FILE` variable with the following command.

docs/streaming/custom-streaming.md

@@ -16,6 +16,8 @@ This article overviews the server and client code for a custom asynchronous web
 - Automatic reconnection and error handling
 - Base64 encoding for audio data transmission
 
+There is also a [WebSocket](custom-streaming-ws.md) version of the sample is available.
+
 ## 1. Install ADK {#1.-setup-installation}
 
 Create & Activate Virtual Environment (Recommended):
@@ -32,7 +34,7 @@ python -m venv .venv
 Install ADK:
 
 ```bash
-pip install google-adk==1.0.0
+pip install --upgrade google-adk==1.2.1
 ```
 
 Set `SSL_CERT_FILE` variable with the following command.
@@ -153,6 +155,7 @@ These console logs are important in case you develop your own streaming applicat
 
 6\. **Troubleshooting tips**
 
+- **When your browser can't connect to the server via SSH proxy:** SSH proxy used in various cloud services may not work with SSE. Please try without SSH proxy, such as using a local laptop, or try the [WebSocket](custom-streaming-ws.md) version.
 - **When `gemini-2.0-flash-exp` model doesn't work:** If you see any errors on the app server console with regard to `gemini-2.0-flash-exp` model availability, try replacing it with `gemini-2.0-flash-live-001` on `app/google_search_agent/agent.py` at line 6.
 
 ## 4. Agent definition

examples/python/snippets/streaming/adk-streaming-ws/app/requirements.txt

@@ -0,0 +1 @@
+google-adk==1.2.1

examples/python/snippets/streaming/adk-streaming/app/requirements.txt

@@ -0,0 +1 @@
+google-adk==1.2.1