本示例支持LINUX和OPEN-LINUX开发环境，将对讲中使用的数据通信做了抽象，意在能够尽可能的简化测试EC20模块上的功耗，以及网络延迟问题
1 功能说明
1.1 心跳维持
UDP心跳：默认10s
#define TEST_UDP_TIMER 10.0 //UDP Ping Timer
对讲终端2/3G制式时此值为3s, UDP端口有时效，无限增大此值，不同网络制式下一定会出现丢包。
但是太小就会引起功耗上升。TCP心跳：默认60s
#define TEST_TCP_TIMER 60.0 //TCP Ping Timer
对将默认为60秒，TCP作为保持链路使用，此值不是影响终端功耗上升的关键点。
1.2 业务流程
- 开始讲话 「模拟终端A」
static void start_speak(poc_context* poc_ctx);
发送讲话请求消息，回应：
static void on_request_mic_ack(poc_context* poc_ctx, char* msg);
请求成功后，就开始发送语音数据:
//start send udp data timer
ev_timer_set(&(poc_ctx->timer_udp_data),TEST_UDP_DATA_TIMER,0);
ev_timer_start(poc_ctx->loop,&(poc_ctx->timer_udp_data));
停止讲话「模拟终端A」
static void stop_speak(poc_context* poc_ctx);
发送停止请求消息，回应：
static void on_drop_mic_ack(poc_context* poc_ctx, char* msg);
请求成功后，就会停止发送语音数据：
ev_timer_stop(poc_ctx->loop,&(poc_ctx->timer_udp_data));发送语音「模拟终端A」
开始发送语音数据，每200ms发送一包udp_data：
send_udp_data(poc_ctx);有人开始讲话「模拟终端B」
收到有人开始讲话通知:
static void on_member_get_mic(poc_context* poc_ctx, char* msg);有人停止讲话「模拟终端B」
收到有人停止讲话通知:
static void on_member_drop_mic(poc_context* poc_ctx, char* msg);收到语音数据 「模拟终端B」
收到语音数据:
static void on_data(poc_context* poc_ctx, char* msg);
2 测试及统计
2.1 编译
终端使用cmake来管理的源码，需要安装cmake。
安装完后，配置系统根目录的路径, 修改./depends/arm-oe-linux-gnueabi.toolchain.sh:
set(OPENLINUX_TOOLCHAIN_DIR /opt/ql-oe/sysroots/x86_64-linux/usr/bin/arm-oe-linux-gnueabi)
set(OPENLINUX_ROOT_DIR /opt/ql-oe/sysroots/mdm9607)
对于EC20编译执行make-arm-oe.sh
对于LINUX编译执行make-linux.sh
无错误的话会生成poc_client应用(linux在build目录，openlinux在bb目录)
2.2 程序部署
部署
pocecho.py
需要linux+python环境，并且服务器有外网IP，UDP/TCP各一个可用端口
运行python pocecho.py start|stop|restartPUSH终端应用
连接EC20到PC，adb push poc_client /data/
可以使用的组合：
A（PC-LINUX） + B（EC20）：A发送，B接收，统计B输出的数据
A（EC20）+ B（EC20）：统计接收端输出的数据
注：程序中用到了对时功能，需要root权限修改本地时间才会生效（PC-LINUX情况）
- 修改服务器IP和端口
poc_def.h中HAL_OPENLINUX表示为OPENLINUX(EC20):
//SERVER ADDRESS
#ifndef HAL_OPENLINUX
#define TEST_SERVER_IP "192.168.40.103"
#define TEST_SERVER_UDP_PORT 10071
#define TEST_SERVER_TCP_PORT 10073
#else
#define TEST_SERVER_IP "119.254.102.206"
#define TEST_SERVER_UDP_PORT 10075
#define TEST_SERVER_TCP_PORT 10078
#endif
2.3 数据统计：
条件：
- UDP网络制式：电信/移动/联通，2G/3G/4G
- 心跳间隔：3/5/8/10 秒等
- POC对将消息
数据：
待机情况下耗流(区分不同运营商及网络制式)
收发数据情况下耗流
待机情况,休眠情况开始/停止讲话时间
收到有人开始讲话/停止讲话的通知时间（MODEM收到数据的时间）
待机情况,休眠情况，关心的是服务端推送数据到达的延迟有多少收到第一包别人语音数据的时间（MODEM收到数据的时间）
待机情况,休眠情况，关心的是服务端推送数据到达的延迟有多少待机进入休眠的时长
2.4 日志输出解释
poc_def.h定义了协议的标识，如下：
//PROTO
#define POC_REQUEST_MIC "#RequestMic" //#RequestMic:N:DUMP
#define POC_REQUEST_MIC_ACK "#RequestMicAck"
#define POC_DROP_MIC "#DropMic" //#DropMic:N:DUMP
#define POC_DROP_MIC_ACK "#DropMicAck"
#define POC_MEMBER_GET_MIC "#MemberGetMic" //#MemberGetMic:N:DUMP
#define POC_MEMBER_DROP_MIC "#MemberDropMic"
#define POC_LOST_MIC "#LostMic"
#define POC_PING "#Ping" //#Ping:UDP:N:DUMP #Ping:TCP:N:DUMP
#define POC_PONG "#Pong" //#Pong:UDP:N:DUMP #Pong:TCP:N:DUMP
#define POC_DATA "#Data" //#Data:N:DUMP
#define POC_END "#End" //#End
#define POC_NTP "#NTP" //#NTP:t_request:t_request_recv:t_respone:t_response_recv
输出的日志：
/data # ./poc_client
[DEBUG] 2017-07-24 06:26:45.735 poc_ctx init event bindings sizeof(int):4
[DEBUG] 2017-07-24 06:26:45.742 poc_ctx initial mobile ap ...
[DEBUG] 2017-07-24 06:26:48.796 poc_ctx < retrived ip address:10.131.20.122 >
[DEBUG] 2017-07-24 06:26:49.027 poc_ctx connect to server success
[DEBUG] 2017-07-24 06:26:49.405 poc_ctx on_ntp msg:#NTP:1934022994:1500877591508:1500877591508:1934023101
[DEBUG] 2017-07-24 14:26:32.065 poc_ctx on_udp_readable buf:#Pong:UDP:0002:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:26:43.181 poc_ctx on_udp_readable buf:#Pong:UDP:0003:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:26:53.736 poc_ctx on_udp_readable buf:#Pong:UDP:0004:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:27:03.621 poc_ctx on_udp_readable buf:#Pong:UDP:0005:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:27:13.318 poc_ctx on_udp_readable buf:#Pong:UDP:0006:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:27:23.281 poc_ctx on_data msg:#Data:0001:2017-07-24 14:27:20.332 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.283 poc_ctx on_tcp_readable msg:#MemberGetMic:0000:2017-07-24 14:27:20.107 len:43
[DEBUG] 2017-07-24 14:27:23.284 poc_ctx on_member_get_mic msg:#MemberGetMic:0000:2017-07-24 14:27:20.107
[DEBUG] 2017-07-24 14:27:23.284 poc_ctx on_data msg:#Data:0002:2017-07-24 14:27:20.533 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.284 poc_ctx on_data msg:#Data:0003:2017-07-24 14:27:20.733 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.285 poc_ctx on_data msg:#Data:0004:2017-07-24 14:27:20.934 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.285 poc_ctx on_data msg:#Data:0005:2017-07-24 14:27:21.134 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.285 poc_ctx on_data msg:#Data:0006:2017-07-24 14:27:21.334 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.285 poc_ctx on_data msg:#Data:0007:2017-07-24 14:27:21.535 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.286 poc_ctx on_data msg:#Data:0008:2017-07-24 14:27:21.735 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.287 poc_ctx on_data msg:#Data:0009:2017-07-24 14:27:21.936 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.288 poc_ctx on_data msg:#Data:0010:2017-07-24 14:27:22.136 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.292 poc_ctx on_data msg:#Data:0011:2017-07-24 14:27:22.336 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.292 poc_ctx on_data msg:#Data:0012:2017-07-24 14:27:22.537 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.292 poc_ctx on_data msg:#Data:0013:2017-07-24 14:27:22.737 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.293 poc_ctx on_data msg:#Data:0014:2017-07-24 14:27:22.938 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.382 poc_ctx on_udp_readable buf:#Pong:UDP:0007:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:27:23.428 poc_ctx on_udp_readable buf:#Pong:UDP:0008:The quick brown fox jumps over the lazy dog. len:60
[DEBUG] 2017-07-24 14:27:23.449 poc_ctx on_data msg:#Data:0015:2017-07-24 14:27:23.138 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.651 poc_ctx on_data msg:#Data:0016:2017-07-24 14:27:23.339 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:23.951 poc_ctx on_data msg:#Data:0017:2017-07-24 14:27:23.540 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:24.051 poc_ctx on_data msg:#Data:0018:2017-07-24 14:27:23.740 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:24.252 poc_ctx on_data msg:#Data:0019:2017-07-24 14:27:23.940 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:24.491 poc_ctx on_data msg:#Data:0020:2017-07-24 14:27:24.141 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:24.652 poc_ctx on_data msg:#Data:0021:2017-07-24 14:27:24.341 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:24.946 poc_ctx on_data msg:#Data:0022:2017-07-24 14:27:24.542 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:25.053 poc_ctx on_data msg:#Data:0023:2017-07-24 14:27:24.742 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:25.253 poc_ctx on_data msg:#Data:0024:2017-07-24 14:27:24.943 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:25.455 poc_ctx on_data msg:#Data:0025:2017-07-24 14:27:25.143 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:25.651 poc_ctx on_data msg:#Data:0026:2017-07-24 14:27:25.344 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:25.855 poc_ctx on_data msg:#Data:0027:2017-07-24 14:27:25.544 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:26.086 poc_ctx on_data msg:#Data:0028:2017-07-24 14:27:25.744 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:26.257 poc_ctx on_data msg:#Data:0029:2017-07-24 14:27:25.945 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:26.455 poc_ctx on_data msg:#Data:0030:2017-07-24 14:27:26.145 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:26.655 poc_ctx on_data msg:#Data:0031:2017-07-24 14:27:26.345 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:26.857 poc_ctx on_data msg:#Data:0032:2017-07-24 14:27:26.546 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:27.058 poc_ctx on_data msg:#Data:0033:2017-07-24 14:27:26.746 The quick brown fox jumps over the lazy dog.
[DEBUG] 2017-07-24 14:27:27.112 poc_ctx on_tcp_readable msg:#MemberDropMic:0001:2017-07-24 14:27:26.803 len:44
[DEBUG] 2017-07-24 14:27:27.112 poc_ctx on_member_drop_mic msg:#MemberDropMic:0001:2017-07-24 14:27:26.803
上面日志有:
#NTP: UDP，服务端相应的#NTP
#Pong: UDP，服务端相应终端的#Ping
#MemberGetMic: TCP，服务器响应另外一个终端的#RequestMic, 推送的通知; 包含了发送端的时间戳
#MemberDropMic: TCP，服务器响应另外一个终端的#DropMic, 推送的通知; 包含了发送端的时间戳
#Data: UDP, 服务器收到另外一个终端的#Data数据，转发过来的; 包含了发送端的时间戳
