245 lines
		
	
	
		
			8.8 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			245 lines
		
	
	
		
			8.8 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package nat
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import (
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	"fmt"
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	"io"
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	"net"
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	"net/http"
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	"runtime"
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	"strings"
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	"testing"
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	"github.com/huin/goupnp/httpu"
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)
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func TestUPNP_DDWRT(t *testing.T) {
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	if runtime.GOOS == "windows" {
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		t.Skipf("disabled to avoid firewall prompt")
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	}
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	dev := &fakeIGD{
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		t: t,
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		ssdpResp: "HTTP/1.1 200 OK\r\n" +
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			"Cache-Control: max-age=300\r\n" +
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			"Date: Sun, 10 May 2015 10:05:33 GMT\r\n" +
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			"Ext: \r\n" +
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			"Location: http://{{listenAddr}}/InternetGatewayDevice.xml\r\n" +
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			"Server: POSIX UPnP/1.0 DD-WRT Linux/V24\r\n" +
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			"ST: urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" +
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			"USN: uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800::urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" +
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			"\r\n",
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		httpResps: map[string]string{
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			"GET /InternetGatewayDevice.xml": `
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				 <?xml version="1.0"?>
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				 <root xmlns="urn:schemas-upnp-org:device-1-0">
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					 <specVersion>
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						 <major>1</major>
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						 <minor>0</minor>
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					 </specVersion>
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					 <device>
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						 <deviceType>urn:schemas-upnp-org:device:InternetGatewayDevice:1</deviceType>
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						 <manufacturer>DD-WRT</manufacturer>
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						 <manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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						 <modelDescription>Gateway</modelDescription>
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						 <friendlyName>Asus RT-N16:DD-WRT</friendlyName>
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						 <modelName>Asus RT-N16</modelName>
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						 <modelNumber>V24</modelNumber>
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						 <serialNumber>0000001</serialNumber>
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						 <modelURL>http://www.dd-wrt.com</modelURL>
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						 <UDN>uuid:A13AB4C3-3A14-E386-DE6A-EFEA923A06FE</UDN>
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						 <serviceList>
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							 <service>
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								 <serviceType>urn:schemas-upnp-org:service:Layer3Forwarding:1</serviceType>
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								 <serviceId>urn:upnp-org:serviceId:L3Forwarding1</serviceId>
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								 <SCPDURL>/x_layer3forwarding.xml</SCPDURL>
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								 <controlURL>/control?Layer3Forwarding</controlURL>
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								 <eventSubURL>/event?Layer3Forwarding</eventSubURL>
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							 </service>
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						 </serviceList>
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						 <deviceList>
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							 <device>
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								 <deviceType>urn:schemas-upnp-org:device:WANDevice:1</deviceType>
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								 <friendlyName>WANDevice</friendlyName>
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								 <manufacturer>DD-WRT</manufacturer>
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								 <manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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								 <modelDescription>Gateway</modelDescription>
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								 <modelName>router</modelName>
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								 <modelURL>http://www.dd-wrt.com</modelURL>
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								 <UDN>uuid:48FD569B-F9A9-96AE-4EE6-EB403D3DB91A</UDN>
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								 <serviceList>
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									 <service>
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										 <serviceType>urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1</serviceType>
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										 <serviceId>urn:upnp-org:serviceId:WANCommonIFC1</serviceId>
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										 <SCPDURL>/x_wancommoninterfaceconfig.xml</SCPDURL>
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										 <controlURL>/control?WANCommonInterfaceConfig</controlURL>
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										 <eventSubURL>/event?WANCommonInterfaceConfig</eventSubURL>
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									 </service>
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								 </serviceList>
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								 <deviceList>
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									 <device>
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										 <deviceType>urn:schemas-upnp-org:device:WANConnectionDevice:1</deviceType>
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										 <friendlyName>WAN Connection Device</friendlyName>
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										 <manufacturer>DD-WRT</manufacturer>
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										 <manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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										 <modelDescription>Gateway</modelDescription>
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										 <modelName>router</modelName>
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										 <modelURL>http://www.dd-wrt.com</modelURL>
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										 <UDN>uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800</UDN>
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										 <serviceList>
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											 <service>
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												 <serviceType>urn:schemas-upnp-org:service:WANIPConnection:1</serviceType>
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												 <serviceId>urn:upnp-org:serviceId:WANIPConn1</serviceId>
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												 <SCPDURL>/x_wanipconnection.xml</SCPDURL>
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												 <controlURL>/control?WANIPConnection</controlURL>
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												 <eventSubURL>/event?WANIPConnection</eventSubURL>
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											 </service>
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										 </serviceList>
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									 </device>
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								 </deviceList>
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							 </device>
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							 <device>
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								 <deviceType>urn:schemas-upnp-org:device:LANDevice:1</deviceType>
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								 <friendlyName>LANDevice</friendlyName>
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								 <manufacturer>DD-WRT</manufacturer>
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								 <manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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								 <modelDescription>Gateway</modelDescription>
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								 <modelName>router</modelName>
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								 <modelURL>http://www.dd-wrt.com</modelURL>
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								 <UDN>uuid:04021998-3B35-2BDB-7B3C-99DA4435DA09</UDN>
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								 <serviceList>
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									 <service>
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										 <serviceType>urn:schemas-upnp-org:service:LANHostConfigManagement:1</serviceType>
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										 <serviceId>urn:upnp-org:serviceId:LANHostCfg1</serviceId>
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										 <SCPDURL>/x_lanhostconfigmanagement.xml</SCPDURL>
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										 <controlURL>/control?LANHostConfigManagement</controlURL>
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										 <eventSubURL>/event?LANHostConfigManagement</eventSubURL>
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									 </service>
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								 </serviceList>
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							 </device>
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						 </deviceList>
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						 <presentationURL>http://{{listenAddr}}</presentationURL>
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					 </device>
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				 </root>
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			`,
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			// The response to our GetNATRSIPStatus call. This
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			// particular implementation has a bug where the elements
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			// inside u:GetNATRSIPStatusResponse are not properly
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			// namespaced.
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			"POST /control?WANIPConnection": `
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				 <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
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				 <s:Body>
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				 <u:GetNATRSIPStatusResponse xmlns:u="urn:schemas-upnp-org:service:WANIPConnection:1">
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				 <NewRSIPAvailable>0</NewRSIPAvailable>
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				 <NewNATEnabled>1</NewNATEnabled>
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				 </u:GetNATRSIPStatusResponse>
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				 </s:Body>
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				 </s:Envelope>
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			`,
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		},
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	}
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	if err := dev.listen(); err != nil {
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		t.Skipf("cannot listen: %v", err)
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	}
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	dev.serve()
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	defer dev.close()
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	// Attempt to discover the fake device.
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	discovered := discoverUPnP()
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	if discovered == nil {
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		t.Fatalf("not discovered")
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	}
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	upnp, _ := discovered.(*upnp)
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	if upnp.service != "IGDv1-IP1" {
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		t.Errorf("upnp.service mismatch: got %q, want %q", upnp.service, "IGDv1-IP1")
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	}
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	wantURL := "http://" + dev.listener.Addr().String() + "/InternetGatewayDevice.xml"
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	if upnp.dev.URLBaseStr != wantURL {
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		t.Errorf("upnp.dev.URLBaseStr mismatch: got %q, want %q", upnp.dev.URLBaseStr, wantURL)
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	}
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}
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// fakeIGD presents itself as a discoverable UPnP device which sends
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// canned responses to HTTPU and HTTP requests.
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type fakeIGD struct {
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	t *testing.T // for logging
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	listener      net.Listener
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	mcastListener *net.UDPConn
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	// This should be a complete HTTP response (including headers).
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	// It is sent as the response to any sspd packet. Any occurrence
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	// of "{{listenAddr}}" is replaced with the actual TCP listen
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	// address of the HTTP server.
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	ssdpResp string
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	// This one should contain XML payloads for all requests
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	// performed. The keys contain method and path, e.g. "GET /foo/bar".
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	// As with ssdpResp, "{{listenAddr}}" is replaced with the TCP
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	// listen address.
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	httpResps map[string]string
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}
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// httpu.Handler
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func (dev *fakeIGD) ServeMessage(r *http.Request) {
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	dev.t.Logf(`HTTPU request %s %s`, r.Method, r.RequestURI)
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	conn, err := net.Dial("udp4", r.RemoteAddr)
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	if err != nil {
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		fmt.Printf("reply Dial error: %v", err)
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		return
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	}
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	defer conn.Close()
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	io.WriteString(conn, dev.replaceListenAddr(dev.ssdpResp))
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}
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// http.Handler
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func (dev *fakeIGD) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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	if resp, ok := dev.httpResps[r.Method+" "+r.RequestURI]; ok {
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		dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 200)
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		io.WriteString(w, dev.replaceListenAddr(resp))
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	} else {
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		dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 404)
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		w.WriteHeader(http.StatusNotFound)
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	}
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}
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func (dev *fakeIGD) replaceListenAddr(resp string) string {
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	return strings.Replace(resp, "{{listenAddr}}", dev.listener.Addr().String(), -1)
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}
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func (dev *fakeIGD) listen() (err error) {
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	if dev.listener, err = net.Listen("tcp", "127.0.0.1:0"); err != nil {
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		return err
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	}
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	laddr := &net.UDPAddr{IP: net.ParseIP("239.255.255.250"), Port: 1900}
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	if dev.mcastListener, err = net.ListenMulticastUDP("udp", nil, laddr); err != nil {
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		dev.listener.Close()
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		return err
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	}
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	return nil
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}
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func (dev *fakeIGD) serve() {
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	go httpu.Serve(dev.mcastListener, dev)
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	go http.Serve(dev.listener, dev)
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}
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func (dev *fakeIGD) close() {
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	dev.mcastListener.Close()
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	dev.listener.Close()
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}
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