zxyao145 opened a new issue, #154:
URL: https://github.com/apache/apisix-go-plugin-runner/issues/154
### Issue description
I am trying to rewrite the request body and response body , and the
`RequestFilter` method code is roughly as follows:
```go
origBody := []byte("{\"keyword\": \"xxxxx\"}")
log.Infof("request get Content-Length 1: %s",
r.Header().Get("Content-Length"))
r.SetBody(origBody)
log.Infof("request get Content-Length 2: %s",
r.Header().Get("Content-Length"))
r.Header().Set("Content-Length", strconv.Itoa(len(origBody)))
log.Infof("request get Content-Length 3: %s",
r.Header().Get("Content-Length"))
```
and the log as follows:
```
request get Content-Length 1: 158
request get Content-Length 2: 158
request get Content-Length 3: 20
```
If I don't manually set the Content-Length, I will find that
`ResponseFilter` method of the same plugin cannot be triggered and a timeout
exception will occur.
```
Traceback (most recent call last):
File
"C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\site-packages\urllib3\connectionpool.py",
line 467, in _make_request
six.raise_from(e, None)
File "<string>", line 3, in raise_from
File
"C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\site-packages\urllib3\connectionpool.py",
line 462, in _make_request
httplib_response = conn.getresponse()
File
"C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\http\client.py", line
1344, in getresponse
response.begin()
File
"C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\http\client.py", line
307, in begin
version, status, reason = self._read_status()
File
"C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\http\client.py", line
268, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "C:\Users\xxx\AppData\Local\Programs\Python\Python38\lib\socket.py",
line 669, in readinto
return self._sock.recv_into(b)
socket.timeout: timed out
````
If this is by design, please update the documentation and the demo.
### Environment
* APISIX Go Plugin Runner's version:
github.com/apache/apisix-go-plugin-runner
v0.5.1-0.20231128010119-a265bcd63ca1
* APISIX version:
3.6.0
* Go version:
1.19
* OS (cmd: `uname -a`):
debian:bullseye-slim
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