The beginning to a bittorrent tracker implemented in Google's Go.

BitGo.go

package main

import (
	"http"
	"io"
	"log"
)

func AnnounceHandler(w http.ResponseWriter, req *http.Request) {
	req.ParseForm()
	
	// map[
		// info_hash:	[n¯¬3«ú¡Úô¶oëß]
		// peer_id:		[-UT3000->c-,Æ|yÔ]
		// port:		[53352]
		// uploaded:	[0]
		// downloaded:	[0]
		// left:		[106755969]
		// compact:		[1]
		// no_peer_id:	[1]
		// event:		[started]
		// key:			[3AD1F624]
		// numwant:		[200]
		// corrupt:		[0]
	// ]

	// info_hash := []byte(req.FormValue("info_hash"))
	
	log.Println(req.Form)
	io.WriteString(w, req.UserAgent)
}

func main() {
	log.SetFlags(log.Lshortfile)
	http.HandleFunc("/announce", AnnounceHandler)
	err := http.ListenAndServe(":8000", nil)
	if err != nil {
		log.Fatal("ListenAndServe: ", err.String())
	}
}