You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: requestor.go
    path of file: ./repos/gotalk/examples/read-timeout
    
    the code of the file until where you have to start completion: package main

import (
	"fmt"
	"io"
	"strings"
	"sync"
	"time"

	"github.com/rsms/gotalk"
)

// slowWriter simulates slow writing, to demonstrate timeout
type slowWriter struct {
	c     io.ReadWriteCloser
	delay time.Duration
}

func (rwc *slowWriter) Read(p []byte) (n int, err error) {
	n, err = rwc.c.Read(p)
	if err == nil {
		// Note: This is a completely unreliable way of detecting messages. It works because
		// we are not sending any payloads starting with the byte 'e'.
		if p[0] == byte(gotalk.MsgTypeRetryRes) {
			fmt.Printf("requesto
    
func (rwc *slowWriter) Write(p []byte) (n int, err error) {
	// Delay anything but writing single-request headers

	// tname := "?"
	// switch gotalk.MsgType(p[0]) {
	// case gotalk.MsgTypeSingleReq: tname = "SingleReq"
	// case gotalk.MsgTypeStreamReq: tname = "StreamReq"
	// case gotalk.MsgTypeStreamReqPart: tname = "StreamReqPart"
	// case gotalk.MsgTypeSingleRes: tname = "SingleRes"
	// case gotalk.MsgTypeStreamRes: tname = "StreamRes"
	// case gotalk.MsgTypeErrorRes: tname = "ErrorRes"
	// case gotalk.MsgTypeRetryRes: tname = "RetryRes"
	// case gotalk.MsgTypeNotification: tname = "Notification"
	// case gotalk.MsgTypeHeartbeat: tname = "Heartbeat"
	// case gotalk.MsgTypeProtocolError: tname = "ProtocolError"
	// default:
	// 	fmt.Printf("slowWriter.Write (rest) %q\n", p)
	// 	return rwc.c.Write(p)
	// }
	// fmt.Printf("slowWriter.Write %s\n", tname)

	if err == nil && p[0] == byte(gotalk.MsgTypeSingleReq) {
		time.Sleep(rwc.delay)
		n, err = rwc.c.Write(p)
		return
	}
	return rwc.c.Write(p)
}