61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
package inbound
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import (
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"net"
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"net/http"
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"strings"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/context"
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)
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// NewHTTP receive normal http request and return HTTPContext
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func NewHTTP(request *http.Request, conn net.Conn) *context.HTTPContext {
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metadata := parseHTTPAddr(request)
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metadata.Type = C.HTTP
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if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
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metadata.SrcIP = ip
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metadata.SrcPort = port
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}
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return context.NewHTTPContext(conn, request, metadata)
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}
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// RemoveHopByHopHeaders remove hop-by-hop header
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func RemoveHopByHopHeaders(header http.Header) {
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// Strip hop-by-hop header based on RFC:
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// http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.1
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// https://www.mnot.net/blog/2011/07/11/what_proxies_must_do
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header.Del("Proxy-Connection")
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header.Del("Proxy-Authenticate")
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header.Del("Proxy-Authorization")
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header.Del("TE")
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header.Del("Trailers")
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header.Del("Transfer-Encoding")
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header.Del("Upgrade")
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connections := header.Get("Connection")
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header.Del("Connection")
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if len(connections) == 0 {
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return
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}
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for _, h := range strings.Split(connections, ",") {
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header.Del(strings.TrimSpace(h))
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}
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}
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// RemoveExtraHTTPHostPort remove extra host port (example.com:80 --> example.com)
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// It resolves the behavior of some HTTP servers that do not handle host:80 (e.g. baidu.com)
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func RemoveExtraHTTPHostPort(req *http.Request) {
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host := req.Host
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if host == "" {
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host = req.URL.Host
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}
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if pHost, port, err := net.SplitHostPort(host); err == nil && port == "80" {
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host = pHost
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}
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req.Host = host
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req.URL.Host = host
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}
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