I/O Blocking in http.Handler

client.go

package main

import (
	"log"
	"net"
)

func main() {
	println("dialing")
	conn, err := net.Dial("tcp", "localhost:12345")
	if err != nil {
		log.Fatal(err)
	}
	println("sending GET request")
	_, err = conn.Write([]byte("GET / HTTP/1.1\r\n"))
	if err != nil {
		log.Fatal(err)
	}
	_, err = conn.Write([]byte("Host: localhost\r\n\r\n"))
	if err != nil {
		log.Fatal(err)
	}
	println("blocking and never reading")
	select {}
}

server.go

package main

import (
	"net/http"
	"strings"
)

func main() {
	h := http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
		println("before write")
		for i := 0; i < 700; i++ {
			rw.Write([]byte(strings.Repeat("x", 1024) + "\r\n"))
		}
		println("after write")
	})
	http.ListenAndServe(":12345", h)
}