diff --git a/internal/nodes/http_request.go b/internal/nodes/http_request.go
index 9151929..a96e6e0 100644
--- a/internal/nodes/http_request.go
+++ b/internal/nodes/http_request.go
@@ -121,7 +121,7 @@ func (this *HTTPRequest) Do() {
 	// Web配置
 	err := this.configureWeb(this.Server.Web, true, 0)
 	if err != nil {
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		this.doEnd()
 		return
 	}
diff --git a/internal/nodes/http_request_auth.go b/internal/nodes/http_request_auth.go
index f36d667..2728b97 100644
--- a/internal/nodes/http_request_auth.go
+++ b/internal/nodes/http_request_auth.go
@@ -33,7 +33,7 @@ func (this *HTTPRequest) doAuth() (shouldStop bool) {
 			return writer.StatusCode(), nil
 		}, this.Format)
 		if err != nil {
-			this.write502(err)
+			this.write50x(err, http.StatusInternalServerError)
 			return
 		}
 		if b {
diff --git a/internal/nodes/http_request_error.go b/internal/nodes/http_request_error.go
index 3266b67..cac642c 100644
--- a/internal/nodes/http_request_error.go
+++ b/internal/nodes/http_request_error.go
@@ -1,6 +1,7 @@
 package nodes
 
 import (
+	"github.com/iwind/TeaGo/types"
 	"net/http"
 )
 
@@ -17,30 +18,15 @@ func (this *HTTPRequest) write404() {
 	_, _ = this.writer.Write([]byte(msg))
 }
 
-func (this *HTTPRequest) write500(err error) {
+func (this *HTTPRequest) write50x(err error, statusCode int) {
 	if err != nil {
 		this.addError(err)
 	}
 
-	statusCode := http.StatusInternalServerError
 	if this.doPage(statusCode) {
 		return
 	}
 	this.processResponseHeaders(statusCode)
 	this.writer.WriteHeader(statusCode)
-	_, _ = this.writer.Write([]byte(http.StatusText(statusCode)))
-}
-
-func (this *HTTPRequest) write502(err error) {
-	if err != nil {
-		this.addError(err)
-	}
-
-	statusCode := http.StatusBadGateway
-	if this.doPage(statusCode) {
-		return
-	}
-	this.processResponseHeaders(statusCode)
-	this.writer.WriteHeader(statusCode)
-	_, _ = this.writer.Write([]byte("502 Bad Gateway"))
+	_, _ = this.writer.Write([]byte(types.String(statusCode) + " " + http.StatusText(statusCode)))
 }
diff --git a/internal/nodes/http_request_fastcgi.go b/internal/nodes/http_request_fastcgi.go
index a82e8f2..82a095f 100644
--- a/internal/nodes/http_request_fastcgi.go
+++ b/internal/nodes/http_request_fastcgi.go
@@ -15,6 +15,7 @@ import (
 	"github.com/iwind/gofcgi/pkg/fcgi"
 	"io"
 	"net"
+	"net/http"
 	"net/url"
 	"path/filepath"
 	"strings"
@@ -80,7 +81,7 @@ func (this *HTTPRequest) doFastcgi() (shouldStop bool) {
 
 	client, err := fcgi.SharedPool(fastcgi.Network(), fastcgi.RealAddress(), uint(poolSize)).Client()
 	if err != nil {
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return
 	}
 
@@ -158,13 +159,13 @@ func (this *HTTPRequest) doFastcgi() (shouldStop bool) {
 
 	resp, stderr, err := client.Call(fcgiReq)
 	if err != nil {
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return
 	}
 
 	if len(stderr) > 0 {
 		err := errors.New("Fastcgi Error: " + strings.TrimSpace(string(stderr)) + " script: " + maps.NewMap(params).GetString("SCRIPT_FILENAME"))
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return
 	}
 
diff --git a/internal/nodes/http_request_reverse_proxy.go b/internal/nodes/http_request_reverse_proxy.go
index a90a45b..5fe8772 100644
--- a/internal/nodes/http_request_reverse_proxy.go
+++ b/internal/nodes/http_request_reverse_proxy.go
@@ -8,6 +8,7 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"io"
+	"net/http"
 	"net/url"
 	"strconv"
 	"strings"
@@ -36,7 +37,7 @@ func (this *HTTPRequest) doReverseProxy() {
 	if origin == nil {
 		err := errors.New(this.requestPath() + ": no available backends for reverse proxy")
 		remotelogs.Error("HTTP_REQUEST_REVERSE_PROXY", err.Error())
-		this.write502(err)
+		this.write50x(err, http.StatusBadGateway)
 		return
 	}
 	this.origin = origin // 设置全局变量是为了日志等处理
@@ -56,7 +57,7 @@ func (this *HTTPRequest) doReverseProxy() {
 	if origin.Addr == nil {
 		err := errors.New(this.requestPath() + ": origin '" + strconv.FormatInt(origin.Id, 10) + "' does not has a address")
 		remotelogs.Error("HTTP_REQUEST_REVERSE_PROXY", err.Error())
-		this.write502(err)
+		this.write50x(err, http.StatusBadGateway)
 		return
 	}
 	this.RawReq.URL.Scheme = origin.Addr.Protocol.Primary().Scheme()
@@ -143,7 +144,7 @@ func (this *HTTPRequest) doReverseProxy() {
 	client, err := SharedHTTPClientPool.Client(this.RawReq, origin, originAddr)
 	if err != nil {
 		remotelogs.Error("HTTP_REQUEST_REVERSE_PROXY", err.Error())
-		this.write502(err)
+		this.write50x(err, http.StatusBadGateway)
 		return
 	}
 
@@ -158,13 +159,23 @@ func (this *HTTPRequest) doReverseProxy() {
 	if err != nil {
 		// 客户端取消请求，则不提示
 		httpErr, ok := err.(*url.Error)
-		if !ok || httpErr.Err != context.Canceled {
-			// TODO 如果超过最大失败次数，则下线
+		if !ok {
 			SharedOriginStateManager.Fail(origin, this.reverseProxy, func() {
 				this.reverseProxy.ResetScheduling()
 			})
-
-			this.write502(err)
+			this.write50x(err, http.StatusBadGateway)
+			remotelogs.Warn("HTTP_REQUEST_REVERSE_PROXY", this.RawReq.URL.String()+"': "+err.Error())
+		} else if httpErr.Err != context.Canceled {
+			SharedOriginStateManager.Fail(origin, this.reverseProxy, func() {
+				this.reverseProxy.ResetScheduling()
+			})
+			if httpErr.Timeout() {
+				this.write50x(err, http.StatusGatewayTimeout)
+			} else if httpErr.Temporary() {
+				this.write50x(err, http.StatusServiceUnavailable)
+			} else {
+				this.write50x(err, http.StatusBadGateway)
+			}
 			remotelogs.Warn("HTTP_REQUEST_REVERSE_PROXY", this.RawReq.URL.String()+"': "+err.Error())
 		} else {
 			// 是否为客户端方面的错误
@@ -178,7 +189,7 @@ func (this *HTTPRequest) doReverseProxy() {
 			}
 
 			if !isClientError {
-				this.write502(err)
+				this.write50x(err, http.StatusBadGateway)
 			}
 		}
 		if resp != nil && resp.Body != nil {
diff --git a/internal/nodes/http_request_root.go b/internal/nodes/http_request_root.go
index 6170c6a..63767bc 100644
--- a/internal/nodes/http_request_root.go
+++ b/internal/nodes/http_request_root.go
@@ -109,7 +109,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 			}
 			return
 		} else {
-			this.write500(err)
+			this.write50x(err, http.StatusInternalServerError)
 			logs.Error(err)
 			return true
 		}
@@ -138,7 +138,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 					}
 					return
 				} else {
-					this.write500(err)
+					this.write50x(err, http.StatusInternalServerError)
 					logs.Error(err)
 					return true
 				}
@@ -283,8 +283,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 
 	reader, err := os.OpenFile(filePath, os.O_RDONLY, 0444)
 	if err != nil {
-		this.write500(err)
-		logs.Error(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return true
 	}
 
diff --git a/internal/nodes/http_request_url.go b/internal/nodes/http_request_url.go
index f8a2689..10b6bdc 100644
--- a/internal/nodes/http_request_url.go
+++ b/internal/nodes/http_request_url.go
@@ -36,7 +36,7 @@ func (this *HTTPRequest) doURL(method string, url string, host string, statusCod
 	resp, err := client.Do(req)
 	if err != nil {
 		logs.Error(errors.New(req.URL.String() + ": " + err.Error()))
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return
 	}
 	defer func() {
diff --git a/internal/nodes/http_request_websocket.go b/internal/nodes/http_request_websocket.go
index 772257b..5bb4b25 100644
--- a/internal/nodes/http_request_websocket.go
+++ b/internal/nodes/http_request_websocket.go
@@ -2,7 +2,6 @@ package nodes
 
 import (
 	"errors"
-	"github.com/iwind/TeaGo/logs"
 	"io"
 	"net/http"
 	"net/url"
@@ -43,8 +42,7 @@ func (this *HTTPRequest) doWebsocket() {
 	// 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(this.origin, this.RawReq.RemoteAddr)
 	if err != nil {
-		logs.Error(err)
-		this.write500(err)
+		this.write50x(err, http.StatusBadGateway)
 		return
 	}
 	defer func() {
@@ -53,15 +51,13 @@ func (this *HTTPRequest) doWebsocket() {
 
 	err = this.RawReq.Write(originConn)
 	if err != nil {
-		logs.Error(err)
-		this.write500(err)
+		this.write50x(err, http.StatusBadGateway)
 		return
 	}
 
 	clientConn, _, err := this.writer.Hijack()
 	if err != nil {
-		logs.Error(err)
-		this.write500(err)
+		this.write50x(err, http.StatusInternalServerError)
 		return
 	}
 	defer func() {