46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
package server
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import (
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"net/http"
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"net/http/httputil"
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"net/url"
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"git.magicany.cc/black1552/gin-base/log"
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"github.com/gin-gonic/gin"
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)
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// BuildRequest 创建 HTTP 反向代理 Handler
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// 支持 HTTP 和 WebSocket 协议
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// @Param host 目标服务器地址，例如 "http://127.0.0.1:8081"
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func BuildRequest(host string) gin.HandlerFunc {
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return func(c *gin.Context) {
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targetURL, err := url.Parse(host)
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if err != nil {
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log.Error("parse target host error:", err)
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c.JSON(http.StatusInternalServerError, gin.H{"error": "invalid target host"})
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return
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}
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// 创建反向代理
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proxy := httputil.NewSingleHostReverseProxy(targetURL)
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// 自定义 Director 修改请求，保留原始路径和查询参数
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originalDirector := proxy.Director
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proxy.Director = func(req *http.Request) {
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originalDirector(req)
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// 保留原始请求的路径和查询参数
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req.URL.Path = c.Request.URL.Path
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req.URL.RawQuery = c.Request.URL.RawQuery
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req.Host = targetURL.Host
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}
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// 处理代理错误
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proxy.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
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log.Error("proxy error:", err)
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http.Error(w, "proxy error: "+err.Error(), http.StatusBadGateway)
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}
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proxy.ServeHTTP(c.Writer, c.Request)
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}
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}
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