59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
package adapters
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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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)
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// HTTPAdapter is a adapter for HTTP connection
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type HTTPAdapter struct {
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net.Conn
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metadata *C.Metadata
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R *http.Request
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}
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// Metadata return destination metadata
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func (h *HTTPAdapter) Metadata() *C.Metadata {
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return h.metadata
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}
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// NewHTTP is HTTPAdapter generator
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func NewHTTP(request *http.Request, conn net.Conn) *HTTPAdapter {
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metadata := parseHTTPAddr(request)
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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 &HTTPAdapter{
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metadata: metadata,
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R: request,
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Conn: conn,
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}
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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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