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doc: about headers

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fatedier
2018-05-20 23:41:15 +08:00
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README.md
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@@ -36,6 +36,7 @@ frp is a fast reverse proxy to help you expose a local server behind a NAT or fi
* [Support KCP Protocol](#support-kcp-protocol)
* [Connection Pool](#connection-pool)
* [Rewriting the Host Header](#rewriting-the-host-header)
* [Set Headers In HTTP Request](#set-headers-in-http-request)
* [Get Real IP](#get-real-ip)
* [Password protecting your web service](#password-protecting-your-web-service)
* [Custom subdomain names](#custom-subdomain-names)
@@ -485,7 +486,7 @@ This feature is fit for a large number of short connections.
### Rewriting the Host Header
When forwarding to a local port, frp does not modify the tunneled HTTP requests at all, they are copied to your server byte-for-byte as they are received. Some application servers use the Host header for determining which development site to display. For this reason, frp can rewrite your requests with a modified Host header. Use the `host_header_rewrite` switch to rewrite incoming HTTP requests.
When forwarding to a local port, frp does not modify the tunneled HTTP requests at all, they are copied to your server byte-for-byte as they are received. Some application servers use the Host header for determining which development site to display. For this reason, frp can rewrite your requests with a modified host header. Use the `host_header_rewrite` switch to rewrite incoming HTTP requests.
```ini
# frpc.ini
@@ -496,7 +497,24 @@ custom_domains = test.yourdomain.com
host_header_rewrite = dev.yourdomain.com
```
If `host_header_rewrite` is specified, the Host header will be rewritten to match the hostname portion of the forwarding address.
If `host_header_rewrite` is specified, the host header will be rewritten to match the hostname portion of the forwarding address.
### Set Headers In HTTP Request
You can set headers for proxy which type is `http`.
```ini
# frpc.ini
[web]
type = http
local_port = 80
custom_domains = test.yourdomain.com
host_header_rewrite = dev.yourdomain.com
header_X-From-Where = frp
```
Note that params which have prefix `header_` will be added to http request headers.
In this example, it will set header `X-From-Where: frp` to http request.
### Get Real IP