Quick HTTP to TCP workaround

tcp2http.go

package main

import (
	"bufio"
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"net"
	"net/http"
)

func main() {
	http.HandleFunc("/api/command", func(w http.ResponseWriter, r *http.Request) {
		body, err := ioutil.ReadAll(r.Body)
		if err != nil {
			http.Error(w, fmt.Sprintf("ioutil.ReadAll failed: +v", err.Error()), http.StatusInternalServerError)
			return
		}

		tcpAddr, err := net.ResolveTCPAddr("tcp", "core:6000")
		if err != nil {
			http.Error(w, fmt.Sprintf("ResolveTCPAddr failed: +v", err.Error()), http.StatusInternalServerError)
			return
		}

		conn, err := net.DialTCP("tcp", nil, tcpAddr)
		if err != nil {
			http.Error(w, fmt.Sprintf("Dial failed: +v", err.Error()), http.StatusInternalServerError)
			return
		}

		defer conn.Close()

		_, err = conn.Write(body)
		if err != nil {
			http.Error(w, fmt.Sprintf("Write to server failed: +v", err.Error()), http.StatusInternalServerError)
			return
		}

		reply, err := bufio.NewReader(conn).ReadString('\n')
		if err != nil {
			http.Error(w, fmt.Sprintf("Read from core failed: +v", err.Error()), http.StatusInternalServerError)
			return
		}

		println("reply:")
		println(string(reply))

		io.WriteString(w, reply)
	})
	log.Fatal(http.ListenAndServe(":8000", nil))
}