update the streaming asr readme, test=doc

Author: LeoMax-Xiong

demos/streaming_asr_server/README.md

@@ -31,7 +31,7 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
 - Command Line (Recommended)
 
   ```bash
-  # start the service
+  # in PaddleSpeech/demos/streaming_asr_server start the service
    paddlespeech_server start --config_file ./conf/ws_conformer_application.yaml
   ```
 
@@ -111,6 +111,7 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
 
 - Python API
   ```python
+  # in PaddleSpeech/demos/streaming_asr_server directory
   from paddlespeech.server.bin.paddlespeech_server import ServerExecutor
 
   server_executor = ServerExecutor()
@@ -187,18 +188,16 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
 
 ### 4. ASR Client Usage
 
-#### 4.2 使用 `paddlespeech_client asr_online`
 **Note:** The response time will be slightly longer when using the client for the first time
 - Command Line (Recommended)
    ```
-   # if we use paddlespeech_client asr, we must specify the protocol to websocket
-   paddlespeech_client asr --server_ip 127.0.0.1 --port 8090 --input ./zh.wav --protocol websocket
+   paddlespeech_client asr_online --server_ip 127.0.0.1 --port 8090 --input ./zh.wav
    ```
 
   Usage:
   
   ```bash
-  paddlespeech_client asr help
+  paddlespeech_client asr_online help
   ```
   Arguments:
   - `server_ip`: server ip. Default: 127.0.0.1
@@ -207,7 +206,6 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
   - `sample_rate`: Audio ampling rate, default: 16000.
   - `lang`: Language. Default: "zh_cn".
   - `audio_format`: Audio format. Default: "wav".
-  - `protocol`: protocol between client and server. Streaming asr must be websocket.
   - `punc.server_ip`: punctuation server ip. Default: None.
   - `punc.server_port`: punctuation server port. Default: None.
 
@@ -281,18 +279,16 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
 
 - Python API
   ```python
-  from paddlespeech.server.bin.paddlespeech_client import ASRClientExecutor
-  import json
+  from paddlespeech.server.bin.paddlespeech_client import ASROnlineClientExecutor
 
-  asrclient_executor = ASRClientExecutor()
+  asrclient_executor = ASROnlineClientExecutor()
   res = asrclient_executor(
       input="./zh.wav",
       server_ip="127.0.0.1",
       port=8090,
       sample_rate=16000,
       lang="zh_cn",
-      audio_format="wav",
-      protocol="websocket")
+      audio_format="wav")
   print(res)
   ```
 
@@ -359,5 +355,4 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav
         [2022-04-21 15:59:08,016] [    INFO] - receive msg={'asr_results': '我认为跑步最重要的就是给我带来了身体健康'}
         [2022-04-21 15:59:08,024] [    INFO] - receive msg={'asr_results': '我认为跑步最重要的就是给我带来了身体健康'}
         [2022-04-21 15:59:12,883] [    INFO] - final receive msg={'status': 'ok', 'signal': 'finished', 'asr_results': '我认为跑步最重要的就是给我带来了身体健康'}
-        [2022-04-21 15:59:12,884] [    INFO] - 我认为跑步最重要的就是给我带来了身体健康
-  ```
+  ```