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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proxy
import (
"io"
"net"
"net/url"
"strconv"
"sync"
"testing"
)
func TestFromURL(t *testing.T) {
endSystem, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen failed: %v", err)
}
defer endSystem.Close()
gateway, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen failed: %v", err)
}
defer gateway.Close()
var wg sync.WaitGroup
wg.Add(1)
go socks5Gateway(t, gateway, endSystem, socks5Domain, &wg)
url, err := url.Parse("socks5://user:password@" + gateway.Addr().String())
if err != nil {
t.Fatalf("url.Parse failed: %v", err)
}
proxy, err := FromURL(url, Direct)
if err != nil {
t.Fatalf("FromURL failed: %v", err)
}
_, port, err := net.SplitHostPort(endSystem.Addr().String())
if err != nil {
t.Fatalf("net.SplitHostPort failed: %v", err)
}
if c, err := proxy.Dial("tcp", "localhost:"+port); err != nil {
t.Fatalf("FromURL.Dial failed: %v", err)
} else {
c.Close()
}
wg.Wait()
}
func TestSOCKS5(t *testing.T) {
endSystem, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen failed: %v", err)
}
defer endSystem.Close()
gateway, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("net.Listen failed: %v", err)
}
defer gateway.Close()
var wg sync.WaitGroup
wg.Add(1)
go socks5Gateway(t, gateway, endSystem, socks5IP4, &wg)
proxy, err := SOCKS5("tcp", gateway.Addr().String(), nil, Direct)
if err != nil {
t.Fatalf("SOCKS5 failed: %v", err)
}
if c, err := proxy.Dial("tcp", endSystem.Addr().String()); err != nil {
t.Fatalf("SOCKS5.Dial failed: %v", err)
} else {
c.Close()
}
wg.Wait()
}
func socks5Gateway(t *testing.T, gateway, endSystem net.Listener, typ byte, wg *sync.WaitGroup) {
defer wg.Done()
c, err := gateway.Accept()
if err != nil {
t.Errorf("net.Listener.Accept failed: %v", err)
return
}
defer c.Close()
b := make([]byte, 32)
var n int
if typ == socks5Domain {
n = 4
} else {
n = 3
}
if _, err := io.ReadFull(c, b[:n]); err != nil {
t.Errorf("io.ReadFull failed: %v", err)
return
}
if _, err := c.Write([]byte{socks5Version, socks5AuthNone}); err != nil {
t.Errorf("net.Conn.Write failed: %v", err)
return
}
if typ == socks5Domain {
n = 16
} else {
n = 10
}
if _, err := io.ReadFull(c, b[:n]); err != nil {
t.Errorf("io.ReadFull failed: %v", err)
return
}
if b[0] != socks5Version || b[1] != socks5Connect || b[2] != 0x00 || b[3] != typ {
t.Errorf("got an unexpected packet: %#02x %#02x %#02x %#02x", b[0], b[1], b[2], b[3])
return
}
if typ == socks5Domain {
copy(b[:5], []byte{socks5Version, 0x00, 0x00, socks5Domain, 9})
b = append(b, []byte("localhost")...)
} else {
copy(b[:4], []byte{socks5Version, 0x00, 0x00, socks5IP4})
}
host, port, err := net.SplitHostPort(endSystem.Addr().String())
if err != nil {
t.Errorf("net.SplitHostPort failed: %v", err)
return
}
b = append(b, []byte(net.ParseIP(host).To4())...)
p, err := strconv.Atoi(port)
if err != nil {
t.Errorf("strconv.Atoi failed: %v", err)
return
}
b = append(b, []byte{byte(p >> 8), byte(p)}...)
if _, err := c.Write(b); err != nil {
t.Errorf("net.Conn.Write failed: %v", err)
return
}
}
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