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First commit
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commit
8f888cddac
2
.gitignore
vendored
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2
.gitignore
vendored
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.idea/
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host-rewriter
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46
host-rewriter.go
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46
host-rewriter.go
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package main
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import (
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"flag"
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"log"
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"net/http"
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"net/http/httputil"
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"net/url"
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"time"
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)
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var listenFlag, targetFlag, hostFlag string
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func main() {
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flag.StringVar(&listenFlag, "listen", ":8080", "Listen address")
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flag.StringVar(&targetFlag, "target", "", "Set target URL to forward to")
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flag.StringVar(&hostFlag, "host", "", "Set the host value")
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flag.Parse()
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target, err := url.Parse(targetFlag)
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if err != nil {
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log.Fatal("Failed to parse target URL:", err)
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}
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proxy := &httputil.ReverseProxy{
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Rewrite: func(r *httputil.ProxyRequest) {
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r.SetURL(target)
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r.Out.Host = hostFlag
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},
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}
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s := http.Server{
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Addr: listenFlag,
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Handler: proxy,
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ReadTimeout: 150 * time.Second,
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ReadHeaderTimeout: 150 * time.Second,
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WriteTimeout: 150 * time.Second,
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IdleTimeout: 150 * time.Second,
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MaxHeaderBytes: 4096000,
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}
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log.Printf("Host Rewriter listening on %s\n", listenFlag)
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log.Printf("Rewriting host to '%s' and forwarding to '%s'\n", hostFlag, targetFlag)
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if err := s.ListenAndServe(); err != nil {
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log.Fatal(err)
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}
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}
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