英文:
Get Source IP Address from Go HTTP Server
问题
我正在尝试在Golang中实现一个HTTP服务器，该服务器接收来自使用代理协议的Amazon ELB的请求。现在我想知道原始的IP地址，所以我考虑使用这个包：go-proxyproto。
根据我所了解，这个包主要处理原始的HTTP请求，但是我的服务器实现了一个更高级别的HTTP服务器，并带有一个路由器。
我在它们之间遇到了一些问题。我的问题是：我如何同时使用go-proxyproto库和像gorilla/mux这样的路由器？现在，这个包并没有什么特别之处，它只是在比HTTP更低的层级上进行通信。
示例代码：
// 在所有接口上监听TCP端口2000。
l, err := net.Listen("tcp", ":2000")
// proxyproto是一个为我维护源IP地址的库
proxyList := &proxyproto.Listener{Listener: l}
if err != nil {
log.Fatal(err)
}
defer proxyList.Close()
for {
// 等待连接。
conn, err := proxyList.Accept()
if err != nil {
log.Fatal(err)
}
// 在一个新的goroutine中处理连接。
// 然后循环返回到接受连接的状态，以便可以同时处理多个连接。
go func(c net.Conn) {
// 如何连接我的路由器？
}(conn)
}
希望这可以帮助到你！
英文:
I am trying to implement a HTTP server in Golang that receives requests from an Amazon ELB that uses the proxy protocol. Now I'd like to know what the original IP address is and so I was thinking about using this package.
Now this package talks raws HTTP as far as I can tell but my server implements a higher level HTTP server with a router.
I am having trouble translating between them. My question is this: how do I use this library and still use a router like gorilla/mux? Now there's nothing special about this package, it just talks at a lower level than HTTP.
Example:
// Listen on TCP port 2000 on all interfaces.
l, err := net.Listen("tcp", ":2000")
// proxyproxy is the library that maintains the source ip address for me
proxyList := &proxyproto.Listener{Listener: list}
if err != nil {
log.Fatal(err)
}
defer proxyList.Close()
for {
// Wait for a connection.
conn, err := proxyList.Accept()
if err != nil {
log.Fatal(err)
}
// Handle the connection in a new goroutine.
// The loop then returns to accepting, so that
// multiple connections may be served concurrently.
go func(c net.Conn) {
// how do I connect my router
}(conn)
}
答案1
得分: 1
通常在HTTP中查找实际客户端IP的方法是使用一些HTTP头，例如：
X-Forwarded-ForX-Real-IP
实际上，Amazon ELB似乎支持X-Forwarded-For头：
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/x-forwarded-headers.html
如果你正在使用Gorilla，他们有一个中间件似乎可以为你处理这个问题：
https://godoc.org/github.com/gorilla/handlers#ProxyHeaders
英文:
The usual way of finding out the actual client IP over HTTP is by using some HTTP headers such as:
X-Forwarded-ForX-Real-IP
Actually, Amazon ELB seems to support the X-Forwarded-For header:
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/x-forwarded-headers.html
If you are using Gorilla, they have a middleware that seems to take care of that for you:
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