dylanoy commented on issue #9530:
URL: https://github.com/apache/apisix/issues/9530#issuecomment-2065674070
I've tried all the suggestions mentioned above, including:
```
ngx.req.proxy_set_header('X-Forwarded-For', '127.0.0.1')`
```
```
ngx.var.var_x_forwarded_for='127.0.0.1'
```
```
require('apisix.core').request.set_header(ctx, 'X-Forwarded-For', '')
```
and using
```json
"proxy-rewrite": {
"headers": {
"remove": [
"X-Forwarded-For",
"X-Real-IP"
]
}
}
```
However, none of these methods were able to remove the X-Forwarded-For
header sent to the upstream server or modify its value. I also couldn't change
the value of X-Real-IP.
Finally, I found a solution by referring to the realip module. Using the
following configuration, I was able to successfully modify the X-Real-IP and
X-Forwarded-For headers sent to the upstream server:
```json
"serverless-post-function": {
"functions": [
"return function() local _, client = pcall(require,
'resty.apisix.client')\nclient.set_real_ip('127.0.0.1', 80); end"
],
"phase": "rewrite"
}
```
I'm sharing this here as a reference for anyone who encounters the same
issue or needs to modify these two header values.
Hope everyone has a wonderful day
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