iwangjie opened a new issue, #4381:
URL: https://github.com/apache/shenyu/issues/4381
### Is there an existing issue for this?
- [X] I have searched the existing issues
### Current Behavior
When the reverse proxy upstream is NGINX's service, all request headers will
be sent upstream as they are, while the Host request header is special, which
will lead to 403 if it is incorrect.
For example, the proxy http://www.weather.com.cn/, if the Host field is
passed as the request Host of the gateway, the server returns 403, and the
value of Host that should be passed is www.weather.com.cn.
If this is a bug, please assign it to me and I'll fix it.
### Expected Behavior
Host field is `www.weather.com.cn`
### Steps To Reproduce
1. Reverse proxy www.weather.com.cn
2. Access
3. result 403
### Environment
```markdown
ShenYu version(s): Latest
```
### Debug logs
_No response_
### Anything else?
_No response_
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