反向代理支持RequestPath、RequestURI等

internal/nodes/http_request.go

@@ -727,7 +727,6 @@ func (this *HTTPRequest) setForwardHeaders(header http.Header) {
 }
 
 // 处理自定义Request Header
-// TODO 处理一些被Golang转换了的Header，比如Websocket
 func (this *HTTPRequest) processRequestHeaders(reqHeader http.Header) {
 	if this.web.RequestHeaderPolicy != nil && this.web.RequestHeaderPolicy.IsOn {
 		// 删除某些Header
@@ -768,6 +767,18 @@ func (this *HTTPRequest) processRequestHeaders(reqHeader http.Header) {
 	}
 }
 
+// 处理一些被Golang转换了的Header
+// TODO 可以自定义要转换的Header
+func (this *HTTPRequest) fixRequestHeader(header http.Header) {
+	for k, v := range header {
+		if strings.Contains(k, "-Websocket-") {
+			header.Del(k)
+			k = strings.ReplaceAll(k, "-Websocket-", "-WebSocket-")
+			header[k] = v
+		}
+	}
+}
+
 // 处理自定义Response Header
 func (this *HTTPRequest) processResponseHeaders(statusCode int) {
 	responseHeader := this.writer.Header()

internal/nodes/http_request_reverse_proxy.go

@@ -1,7 +1,72 @@
 package nodes
 
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"strings"
+)
+
 // 处理反向代理
 func (this *HTTPRequest) doReverseProxy() {
+	if this.reverseProxy == nil {
+		return
+	}
+
+	// StripPrefix
+	if len(this.reverseProxy.StripPrefix) > 0 {
+		stripPrefix := this.reverseProxy.StripPrefix
+		if stripPrefix[0] != '/' {
+			stripPrefix = "/" + stripPrefix
+		}
+		this.uri = strings.TrimPrefix(this.uri, stripPrefix)
+		if len(this.uri) == 0 || this.uri[0] != '/' {
+			this.uri = "/" + this.uri
+		}
+	}
+
+	// RequestURI
+	if len(this.reverseProxy.RequestURI) > 0 {
+		if this.reverseProxy.RequestURIHasVariables() {
+			this.uri = this.Format(this.reverseProxy.RequestURI)
+		} else {
+			this.uri = this.reverseProxy.RequestURI
+		}
+		if len(this.uri) == 0 || this.uri[0] != '/' {
+			this.uri = "/" + this.uri
+		}
+
+		// 处理RequestURI中的问号
+		questionMark := strings.LastIndex(this.uri, "?")
+		if questionMark > 0 {
+			path := this.uri[:questionMark]
+			if strings.Contains(path, "?") {
+				this.uri = path + "&" + this.uri[questionMark+1:]
+			}
+		}
+
+		// 去除多个/
+		this.uri = utils.CleanPath(this.uri)
+	}
+
+	// 重组请求URL
+	questionMark := strings.Index(this.uri, "?")
+	if questionMark > -1 {
+		this.RawReq.URL.Path = this.uri[:questionMark]
+		this.RawReq.URL.RawQuery = this.uri[questionMark+1:]
+	} else {
+		this.RawReq.URL.Path = this.uri
+		this.RawReq.URL.RawQuery = ""
+	}
+
+	// RequestHost
+	if len(this.reverseProxy.RequestHost) > 0 {
+		if this.reverseProxy.RequestHostHasVariables() {
+			this.RawReq.Host = this.Format(this.reverseProxy.RequestHost)
+		} else {
+			this.RawReq.Host = this.reverseProxy.RequestHost
+		}
+		this.RawReq.URL.Host = this.RawReq.Host
+	}
+
 	// 判断是否为Websocket请求
 	if this.RawReq.Header.Get("Upgrade") == "websocket" {
 		this.doWebsocket()
@@ -11,4 +76,3 @@ func (this *HTTPRequest) doReverseProxy() {
 	// 普通HTTP请求
 	// TODO
 }
-

internal/nodes/http_request_websocket.go

@@ -16,6 +16,8 @@ func (this *HTTPRequest) doWebsocket() {
 		return
 	}
 
+	// TODO 实现handshakeTimeout
+
 	// 校验来源
 	requestOrigin := this.RawReq.Header.Get("Origin")
 	if len(requestOrigin) > 0 {
@@ -38,7 +40,9 @@ func (this *HTTPRequest) doWebsocket() {
 		return
 	}
 
+	// 处理Header
 	this.processRequestHeaders(this.RawReq.Header)
+	this.fixRequestHeader(this.RawReq.Header) // 处理 Websocket -> WebSocket
 
 	// 设置指定的来源域
 	if !this.web.Websocket.RequestSameOrigin && len(this.web.Websocket.RequestOrigin) > 0 {
@@ -49,11 +53,7 @@ func (this *HTTPRequest) doWebsocket() {
 		this.RawReq.Header.Set("Origin", newRequestOrigin)
 	}
 
-	// TODO 修改RequestURI
-	// TODO 实现handshakeTimeout
-	// TODO 修改 Websocket- 为 WebSocket-
-
-	// TODO 增加N次错误重试
+	// TODO 增加N次错误重试，重试的时候需要尝试不同的源站
 	originConn, err := OriginConnect(origin)
 	if err != nil {
 		logs.Error(err)

internal/utils/path.go

@@ -0,0 +1,24 @@
+package utils
+
+// 清理Path中的多余的字符
+func CleanPath(path string) string {
+	l := len(path)
+	if l == 0 {
+		return "/"
+	}
+	result := []byte{'/'}
+	isSlash := true
+	for i := 0; i < l; i++ {
+		if path[i] == '\\' || path[i] == '/' {
+			if !isSlash {
+				isSlash = true
+				result = append(result, '/')
+			}
+		} else {
+			isSlash = false
+			result = append(result, path[i])
+		}
+	}
+	return string(result)
+}
+

internal/utils/path_test.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	"github.com/iwind/TeaGo/assert"
+	"testing"
+)
+
+func TestCleanPath(t *testing.T) {
+	a := assert.NewAssertion(t)
+
+	a.IsTrue(CleanPath("") == "/")
+	a.IsTrue(CleanPath("/hello/world") == "/hello/world")
+	a.IsTrue(CleanPath("\\hello\\world") == "/hello/world")
+	a.IsTrue(CleanPath("/\\hello\\//world") == "/hello/world")
+	a.IsTrue(CleanPath("hello/world") == "/hello/world")
+	a.IsTrue(CleanPath("/hello////world") == "/hello/world")
+}
+
+func BenchmarkCleanPath(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = CleanPath("/hello///world/very/long/very//long")
+	}
+}