godyn/server/server.go

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2023-10-16 15:52:17 +02:00
package server
import (
"net/http"
"strconv"
"strings"
"time"
"velvettear/godyn/config"
"velvettear/godyn/log"
)
// exported function(s)
func Run() {
log.Debug("starting godyn in server mode")
serverAddress := config.ServerListen() + ":" + strconv.Itoa(config.ServerPort())
http.HandleFunc("/", handleRequests)
log.Info("starting server '" + serverAddress + "'...")
err := http.ListenAndServe(serverAddress, nil)
if err != nil {
log.Fatal("encountered an error starting the server", err.Error())
}
}
// unexported function(s)
func handleRequests(writer http.ResponseWriter, request *http.Request) {
timestamp := time.Now()
ip := strings.TrimSpace(request.Header.Get("X-Real-Ip"))
if len(ip) == 0 {
if strings.HasPrefix(request.RemoteAddr, "[::") {
writer.WriteHeader(500)
writer.Write([]byte("error: could not process request\n"))
log.WarningTimed("could not answert request from '"+request.RemoteAddr+"'", timestamp.UnixMilli())
return
}
ip, _, _ = strings.Cut(request.RemoteAddr, ":")
}
writer.WriteHeader(200)
writer.Write([]byte(ip + "\n"))
log.InfoTimed("answered request from '"+ip+"'", timestamp.UnixMilli())
}