HLS自适应测试环境搭建

准备需要的设备

• 1 or 2 Ethernet USB adaptor，如果电脑本身有一个网口，准备一个Ethernet USB adaptor即可。
• 1 Wifi-Ethernet modem Router（路由器）
• 1 linux computer with Ubuntu 14.04 or earlier（本测试环境搭建的时候系统为Ubuntu 14.04）
• 2 network cable（网线2根）
  
  

测试环境的结构

Ubuntu环境配置

第一、Wired Network configuration ETH0 and ETH1 (LINUX). Configure the network interfaces
(static or DHCP)

第二、 ETH1 => wired connection from the computer to the Internet network access. Ethernet USB
adaptor can be used but it is optional. Just use the Ethernet port from your computer and
proceed to the following configuration:

这里保证电脑链接到外网，电脑能访问网络

第三、ETH0 : use the Ethernet/USB adaptor and configure as below:

这里设置ETH0，把 USB2.0 to 100Mbps Ethernet Adapter插到电脑的USB接口，另一端链接网线，网线的另一端插入到路由器的WAN口（设置路由器的时候需要插入到LAN口，设置完成后重新插入到WAN口）

路由器的配置

Important Note: wired connection of the this D-LINK model into the computer: IF_IN = ETH0

先将ubuntu设置的第三步中网线连接路由器的LAN口，连接WAN口可能无法访问路由器192.168.0.1，然后打开浏览器输入192.168.0.1访问路由器进行路由器的设置

第一、WAN settings
设置如下图：

注意：设置的Default Gateway也就是默认网关为192.168.99.10，要与Eth0中的ip一致

第二、Network settings

第三、WIRELESS settings

主要是设置供客户端访问的无线网络名称和密码

第四、 设置完成保存后将ubuntu设置的第三步中网线重新连接路由器的WAN口

设置Ubuntu的NAT连接

使用脚本initnetwork.sh进行NAT的配置

#!/bin/bash#sudo initNetwork.sh IF_IN IF_OUT############Enable NATiptables --flushiptables --table nat --flushiptables --delete-chainiptables --table nat --delete-chainiptables --table nat --append POSTROUTING --out-interface $2 -j MASQUERADEiptables --append FORWARD --in-interface $1 -j ACCEPT#Uncomment the line below if facing problems while sharing PPPoE#iptables -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtusysctl -w net.ipv4.ip_forward=1

使用终端输入：#sudo initNetwork.sh IF_IN IF_OUT
查看nm-tool或者route

这里IF_OUT为eth1 IF_IN为eth0

Execute initNetwork script to enable routing/NAT from IF_IN to IF_OUT and allow thedevice to access Internet.

使用命令为sudo initNetwork.sh eth0 eth1

Note: This action must be done each time the computer is switched on.MANDATORY!!!

控制 Bandwidth

Use tc_script.sh to control bandwidth. For both scripts, help for usage is provided in the script.
注意脚本中的IF=eth0，一定是要控制的eth0，即 IF_IN

# The network interface we're planning on limiting bandwidth.IF=eth0             # Interface

完整的tc_script.sh请下载：http://download.csdn.net/download/ch853199769/10145908

If you notice “net.ipv4.ip_forward = 1, the routing is successful. Verify that you have access to internet access via Wifi on your DUT. If yes, your test bench is installed successfully.

测试

Catching logs with Wireshark

During the HTTP Live Streaming testing it is necessary to catch HTTP logs to ensure that the
bandwidth is correctly controlled and adapted.

Launch wireshark (no root privilege) like the picture below:

Capture->Interfaces如下：

选中监控的eth0网口，点击start开始

To filter the HTTP event during the logging for analysis and to verify step by step the tests cases.

To control the bandwidth for the testing

Note：测试前注意eth0和eth1是打开的

To configure: (dans le fichier texte)# The network interface we're planning on limiting bandwidth.IF=eth0# Interface# Download and Upload limit for startLIMIT=400kbit# IP address of the machine we are controllingIP=192.168.99.1# Device IP or Wifi Access Point IPCommand to use for the testing:tc_script.sh {start|stop|change [limit_in_kbps]|restart|show}sudo ./tc_script.sh change 200 //limiter 200kbitsudo ./tc_script.sh show //vérifier la BP actuelle

Operator Tests Cases description

Orange France

www.ftgroup-devices.com

Test Set: 4.adaptation to bandwidth
Test: 4.03 - Significant changes of bandwidth
Run: Run_4-19_16-56-15
Test Parameters:
Step: Test server - Bandwidtch decreaseDescription:
1. Activate the network trace
2. Go to http://hls.ftgroup-devices.com
3. Select 1-19.0。
4. Play the stream for 5min5. Limit the bandwidth to 500kbps
Expected:
The player shall adapt to bandwidth selecting a bitrate adapted to the available bandwidth.The playback shall not be interrupted with buffering phases.