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Add H2 path support for fallback

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风扇滑翔翼 2024-07-04 19:59:18 +00:00 committed by GitHub
parent e13f9f59da
commit 4bec9ab845
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GPG key ID: B5690EEEBB952194
2 changed files with 95 additions and 10 deletions
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52
proxy/trojan/server.go
View file

@ -1,7 +1,10 @@
package trojan
import (
"bufio"
"context"
"golang.org/x/net/http2"
"golang.org/x/net/http2/hpack"
"io"
"strconv"
"strings"
@ -346,14 +349,14 @@ func (s *Server) fallback(ctx context.Context, err error, sessionPolicy policy.S
cs := tlsConn.ConnectionState()
name = cs.ServerName
alpn = cs.NegotiatedProtocol
errors.LogInfo(ctx, "realName = " + name)
errors.LogInfo(ctx, "realAlpn = " + alpn)
errors.LogInfo(ctx, "realName = "+name)
errors.LogInfo(ctx, "realAlpn = "+alpn)
} else if realityConn, ok := iConn.(*reality.Conn); ok {
cs := realityConn.ConnectionState()
name = cs.ServerName
alpn = cs.NegotiatedProtocol
errors.LogInfo(ctx, "realName = " + name)
errors.LogInfo(ctx, "realAlpn = " + alpn)
errors.LogInfo(ctx, "realName = "+name)
errors.LogInfo(ctx, "realAlpn = "+alpn)
}
name = strings.ToLower(name)
alpn = strings.ToLower(alpn)
@ -403,7 +406,7 @@ func (s *Server) fallback(ctx context.Context, err error, sessionPolicy policy.S
}
if k == '?' || k == ' ' {
path = string(firstBytes[i:j])
errors.LogInfo(ctx, "realPath = " + path)
errors.LogInfo(ctx, "realPath = "+path)
if pfb[path] == nil {
path = ""
}
@ -413,6 +416,11 @@ func (s *Server) fallback(ctx context.Context, err error, sessionPolicy policy.S
break
}
}
} else if firstLen >= 18 && first.Byte(4) == '*' { // process h2c
h2path := extractPathFromH2Request(connection)
if h2path != "" {
path = h2path
}
}
}
fb := pfb[path]
@ -520,3 +528,37 @@ func (s *Server) fallback(ctx context.Context, err error, sessionPolicy policy.S
return nil
}
// Get path form http2
func extractPathFromH2Request(conn stat.Connection) string {
reader := bufio.NewReader(conn)
framer := http2.NewFramer(conn, reader)
for {
frame, err := framer.ReadFrame()
if err != nil {
return ""
}
// find headers frame
if f, ok := frame.(*http2.HeadersFrame); ok {
decoder := hpack.NewDecoder(4096, func(hf hpack.HeaderField) {})
headerBlock := f.HeaderBlockFragment()
hf, err := decoder.DecodeFull(headerBlock)
if err != nil {
return ""
}
path := func(headers []hpack.HeaderField) string {
for _, header := range headers {
if header.Name == ":path" {
return header.Value
}
}
return ""
}
return path(hf)
}
}
}

53
proxy/vless/inbound/inbound.go
View file

@ -3,6 +3,7 @@ package inbound
//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
import (
"bufio"
"bytes"
"context"
gotls "crypto/tls"
@ -13,6 +14,9 @@ import (
"time"
"unsafe"
"golang.org/x/net/http2"
"golang.org/x/net/http2/hpack"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/common/errors"
@ -223,14 +227,14 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
cs := tlsConn.ConnectionState()
name = cs.ServerName
alpn = cs.NegotiatedProtocol
errors.LogInfo(ctx, "realName = " + name)
errors.LogInfo(ctx, "realAlpn = " + alpn)
errors.LogInfo(ctx, "realName = "+name)
errors.LogInfo(ctx, "realAlpn = "+alpn)
} else if realityConn, ok := iConn.(*reality.Conn); ok {
cs := realityConn.ConnectionState()
name = cs.ServerName
alpn = cs.NegotiatedProtocol
errors.LogInfo(ctx, "realName = " + name)
errors.LogInfo(ctx, "realAlpn = " + alpn)
errors.LogInfo(ctx, "realName = "+name)
errors.LogInfo(ctx, "realAlpn = "+alpn)
}
name = strings.ToLower(name)
alpn = strings.ToLower(alpn)
@ -295,7 +299,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
}
if k == '?' || k == ' ' {
path = string(firstBytes[i:j])
errors.LogInfo(ctx, "realPath = " + path)
errors.LogInfo(ctx, "realPath = "+path)
if pfb[path] == nil {
path = ""
}
@ -305,6 +309,11 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
break
}
}
} else if firstLen >= 18 && first.Byte(4) == '*' { // process h2c
h2path := extractPathFromH2Request(connection)
if h2path != "" {
path = h2path
}
}
}
fb := pfb[path]
@ -583,3 +592,37 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
return nil
}
// Get path form http2
func extractPathFromH2Request(conn stat.Connection) string {
reader := bufio.NewReader(conn)
framer := http2.NewFramer(conn, reader)
for {
frame, err := framer.ReadFrame()
if err != nil {
return ""
}
// find headers frame
if f, ok := frame.(*http2.HeadersFrame); ok {
decoder := hpack.NewDecoder(4096, func(hf hpack.HeaderField) {})
headerBlock := f.HeaderBlockFragment()
hf, err := decoder.DecodeFull(headerBlock)
if err != nil {
return ""
}
path := func(headers []hpack.HeaderField) string {
for _, header := range headers {
if header.Name == ":path" {
return header.Value
}
}
return ""
}
return path(hf)
}
}
}