webrtc起步 － apprtc服务器搭建

简介

     apprtc 是什么，webrtc.org官方指定体验app

 

 

原料：

ubuntu14.04，其他linux版本不限，官方并没特殊说明

chrome M51＋

stunnle   https://www.stunnel.org/index.html

rfc5766-turn-server https://code.google.com/archive/p/rfc5766-turn-server/     

Google App Engine SDK for Python

apprtchttps://github.com/webrtc/apprtc

 

 

 

步骤：

 

设置代理

由于国内网络的特殊性，这步非常关键，如果没有靠谱的代理，很可能以失败告终。

设置shell环境的代理

添加如下内容到 ~/.bashrc

export http_proxy=http://10.xx.xx.xx:100

export https_proxy=http://10.xx.xx.xx:100

     

设置git的代理

添加如下内容到  ~/.gitconfig

[http]

         proxy = http://10.xx.xx.xx:100

         sslverify = false

[https]

          proxy = http://10.xx.xx.xx:100

 

 

安装Google App Engine SDK for Python

https://cloud.google.com/appengine/downloads#Google_App_Engine_SDK_for_Python

下载，解压.

建议存放在和apprtc同级目录

 

├── code

│   ├── google_appengine

│   ├── apprtc

 

 

安装apprtc

下载apprtc源码

git clone https://github.com/webrtc/apprtc.git

建议存放在和google_appengine同级目录

 

├── code

│   ├── google_appengine

│   ├── apprtc

 

 

 

安装npm

下面摘录自［1］，如果设置好代理之后，这些步骤可很顺利的完成

 

Install grunt by first installing npm. npm is distributed as part of nodejs.

sudo apt-get install nodejs

sudo npm install -g npm

 

On Ubuntu 14.04 the default packages installs /usr/bin/nodejs but the /usr/bin/node executable is required for grunt. This is installed on some Ubuntu package sets; if it is missing, you can add this by installing the nodejs-legacypackage,

sudo apt-get install nodejs-legacy

 

It is easiest to install a shared version of grunt-cli from npm using the -g flag. This will allow you access the gruntcommand from /usr/local/bin. More information can be found on gruntjs Getting Started.

sudo npm -g install grunt-cli

Omitting the -g flag will install grunt-cli to the current directory under the node_modules directory.

 

Finally, you will want to install grunt and required grunt dependencies. This can be done from any directory under your checkout of the webrtc/apprtc repository.

npm install

On Ubuntu, you will also need to install the webtest package:

sudo apt-get install python-webtest

 

编译apprtc

sudo grunt build --force

每次更新修改代码都应该重新编译，编译生成的文件存放在out目录中

 

 

运行apprtc

sudo ../google_appengine//dev_appserver.py ./out/app_engine --host 0.0.0.0

 

 

安装 rfc5766-turn-server 

sudo app-get install rfc5766-turn-server

配置

编辑 /etc/trunserver.conf

确保打开了以下行的注释，并且赋予正确的值，port，ip的值当然要按照实际情况填写，static-auth-secret=4080218913最好也不要修改成其他值，因为apprtc硬编码了这个值，除非你也去修改apprtc里对应的地方。realm=cn.cn 这个没有要求，填写自己的域名即可。Verbose 不是必须的，打开它只是为了可以看到更多输出而已。

 

18:listening-port=9000

52:listening-ip=10.58.60.236

97:relay-ip=10.58.60.236

154:Verbose

203:use-auth-secret

211:static-auth-secret=4080218913

289:realm=cn.cn

446:

 

 

制作证书

➜  apprtc git:(restapi) ✗ openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 99999 -nodes

Generating a 2048 bit RSA private key

..............+++

....................................................+++

writing new private key to 'key.pem'

-----

You are about to be asked to enter information that will be incorporated

into your certificate request.

What you are about to enter is what is called a Distinguished Name or a DN.

There are quite a few fields but you can leave some blank

For some fields there will be a default value,

If you enter '.', the field will be left blank.

-----

Country Name (2 letter code) [AU]:cn

State or Province Name (full name) [Some-State]:cn

Locality Name (eg, city) []:cn

Organization Name (eg, company) [Internet Widgits Pty Ltd]:cn

Organizational Unit Name (eg, section) []:cn

Common Name (e.g. server FQDN or YOUR name) []:cn

Email Address []:cn

 

生成过程中多次提示输入一些信息，可以马马虎虎填写一下。

 

将生成的 cert.pem 和 key.pem 安装到/cert/目录下，为什么要放在这个目录呢，因为collidermain中硬编码读取下面两个文件。不放在这里就意味着要去修改collidermain中的代码，为了省事，暂且顺着它的方式来。

"/cert/cert.pem"

"/cert/key.pem"

 

 

 

安装 stunnle

sudo app-get install stunnle

配置

编辑 /usr/local/etc/stunnel/stunnel.conf

 

添加以下内容

[apprtc_main]

accept  = 443

connect = 8080

cert = /cert/cert.pem

 

[apprtc_auth]

accept  = 4431

connect = 8081

cert = /cert/cert.pem

 

 

安装golang

sudo app-get install golang

 

 

编译信令

在apprtc目录中

export GOPATH=$(shell pwd)

go build -o collidermain src/collider/collidermain/main.go

 

编译rfc5766-turn-server授权服务：apprtc_turn_auth

授权服务笔者没有找到源码，所以需要自己写，这里共享出笔者写golang版的代码。

https://github.com/vc60er/apprtc_turn_auth/blob/master/auth.go

编译方式如下

export GOPATH=$(shell pwd)

go build -o auth auth.go

 

 

 

 

修改apprtc中的代码

对apprtc/src做如下修改，但是IP地址要根据实际情况填写。修改之后必不可少的步骤是重新编译，千万别忘了。

 

diff --git a/src/app_engine/apprtc.py b/src/app_engine/apprtc.py

index dbe9d84..2acc179 100755

--- a/src/app_engine/apprtc.py

+++ b/src/app_engine/apprtc.py

@@ -292,6 +292,7 @@ def get_room_parameters(request, room_id, client_id, is_initiator):

 

   if room_id is not None:

     room_link = request.host_url + '/r/' + room_id

+    room_link = room_link.replace("http", "https")

     room_link = append_url_arguments(request, room_link)

     params['room_id'] = room_id

     params['room_link'] = room_link

diff --git a/src/app_engine/constants.py b/src/app_engine/constants.py

index 430a7a2..7d4dd73 100644

--- a/src/app_engine/constants.py

+++ b/src/app_engine/constants.py

@@ -16,8 +16,8 @@ TURN_BASE_URL = 'https://computeengineondemand.appspot.com'

 TURN_URL_TEMPLATE = '%s/turn?username=%s&key=%s'

 CEOD_KEY = '4080218913'

 

-ICE_SERVER_BASE_URL = 'https://networktraversal.googleapis.com'

-ICE_SERVER_URL_TEMPLATE = '%s/v1alpha/iceconfig?key=%s'

+ICE_SERVER_BASE_URL = 'https://10.58.60.236:4431'    # 'https://networktraversal.googleapis.com'

+ICE_SERVER_URL_TEMPLATE = '%s/turn?key=%s'             # '%s/v1alpha/iceconfig?key=%s'

 ICE_SERVER_API_KEY = os.environ.get('ICE_SERVER_API_KEY')

 

 # Dictionary keys in the collider instance info constant.

@@ -25,13 +25,13 @@ WSS_INSTANCE_HOST_KEY = 'host_port_pair'

 WSS_INSTANCE_NAME_KEY = 'vm_name'

 WSS_INSTANCE_ZONE_KEY = 'zone'

 WSS_INSTANCES = [{

-    WSS_INSTANCE_HOST_KEY: 'apprtc-ws.webrtc.org:443',

+    WSS_INSTANCE_HOST_KEY: '10.58.60.236:4432',   # 'apprtc-ws.webrtc.org:443',

     WSS_INSTANCE_NAME_KEY: 'wsserver-std',

     WSS_INSTANCE_ZONE_KEY: 'us-central1-a'

-}, {

-    WSS_INSTANCE_HOST_KEY: 'apprtc-ws-2.webrtc.org:443',

-    WSS_INSTANCE_NAME_KEY: 'wsserver-std-2',

-    WSS_INSTANCE_ZONE_KEY: 'us-central1-f'

+# }, {

+#     WSS_INSTANCE_HOST_KEY: 'apprtc-ws-2.webrtc.org:443',

+#     WSS_INSTANCE_NAME_KEY: 'wsserver-std-2',

+#     WSS_INSTANCE_ZONE_KEY: 'us-central1-f'

 }]

 

 WSS_HOST_PORT_PAIRS = [ins[WSS_INSTANCE_HOST_KEY] for ins in WSS_INSTANCES]

diff --git a/src/collider/collidermain/main.go b/src/collider/collidermain/main.go

index a499ada..5e164dd 100644

--- a/src/collider/collidermain/main.go

+++ b/src/collider/collidermain/main.go

@@ -6,7 +6,7 @@

 package main

 

 import (

-    "collider"

+    "collider/collider"

     "flag"

     "log"

 )

➜  apprtc git:(restapi) ✗

 

 

 

 

最后

由于整个过程过于繁琐，笔者在实验过程中写了Makefile，现也共享传来。这个Makefile在调试运行过程中缺失带来了很多便利，不用每次噼里啪啦的敲一堆命令。几乎包含了上述所有编译，运行的操作，有了此文件只需make  xxx 就行

 

➜  apprtc git:(restapi) ✗ cat Makefile

all: apprtc auth collidermain

 

apprtc:

  sudo grunt build --force

 

auth: auth.go env

    go build -o auth auth.go

 

collidermain: src/collider/collidermain/main.go env

    go build -o collidermain src/collider/collidermain/main.go

 

clean:

    rm auth

 

env:

    export GOPATH=$(shell pwd)

 

test_auth:

    curl http://localhost:8081/turn

    curl http://localhost:8081/v2/turn

 

 

run_apprtc:

    sudo ../google_appengine//dev_appserver.py ./out/app_engine --host 0.0.0.0    2>&1 | tee app.log

 

run_auth:

    sudo ./auth -port 8081

 

run_collidermain:

    sudo ./collidermain -port 4432 -room-server http://localhost:8080 2>&1 | tee collider.log

 

run_stunnel:

    sudo stunnel

 

run_turnserver:

    sudo turnserver

 

 

.PHONY: all test clean apprtc env

 

 

 

 

体验

 

参考文章

     [1].https://github.com/webrtc/apprtc

 

 

未完……