# 1. Goahead开发文档

## 1.1. Goahead版本

5.2.0

## 1.2. 编译脚本

```
# build goahead before make libgo.a
add_custom_command(
    OUTPUT ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/Makefile
    COMMAND echo "tar zxvf goahead-5.2.0.tar.gz"
    COMMAND tar zxvf goahead-5.2.0.tar.gz                    // 解压源码包
    WORKING_DIRECTORY ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/
)
add_custom_command(
    OUTPUT ${EXTERNAL_LIBS_OUTPUT_PATH}/libgo.a
    DEPENDS ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/Makefile
    COMMAND make CC=${CMAKE_C_COMPILER} ARCH=${SET_ARCH} PROFILE=${LIB_TYPE} 
    COMMAND mv ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/build/${GOAHEAD_INCLUDE_PATH}/bin/libgo.a ${EXTERNAL_LIBS_OUTPUT_PATH}/libgo.a // 拷贝静态库到output目录
    COMMAND mv ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/build/${GOAHEAD_INCLUDE_PATH}/bin/libmbedtls.a ${EXTERNAL_LIBS_OUTPUT_PATH}/libmbedtls.a // 拷贝静态库到output目录
    COMMAND mv ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/build/${GOAHEAD_INCLUDE_PATH}/bin/libgoahead-mbedtls.a ${EXTERNAL_LIBS_OUTPUT_PATH}/libgoahead-mbedtls.a // 拷贝静态库到output目录
    COMMAND cp ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/build/${GOAHEAD_INCLUDE_PATH}/bin/self.crt ${PLATFORM_PATH}/cmake-shell/ // 拷贝self.crt,self.key两个到运行目录；
    COMMAND cp ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/build/${GOAHEAD_INCLUDE_PATH}/bin/self.key ${PLATFORM_PATH}/cmake-shell/ // 拷贝self.crt,self.key两个到运行目录；
    COMMAND cp ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/test/route.txt ${GOAHEAD_CONFIG_FILE_PATH} // 配置文件两个：route.txt，auth.txt；
    COMMAND cp ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead/test/auth.txt ${GOAHEAD_CONFIG_FILE_PATH} // 配置文件两个：route.txt，auth.txt；
    WORKING_DIRECTORY ${EXTERNAL_SOURCE_PATH}/goahead-5.2.0/GoAhead
)
add_custom_target(
    libgo.a // 创建goahead目标
    DEPENDS ${EXTERNAL_LIBS_OUTPUT_PATH}/libgo.a
)
```

## 1.3. 环境配置

1. 拷贝self.crt,self.key两个到运行目录；
2. 配置文件两个：route.txt，auth.txt；

## 1.4. 代码整改

   由于官方源码是不超时阻塞，为了方便自动化测试，把官方源码的不超时阻塞改成超时阻塞。
```
PUBLIC void websServiceEvents(int *finished)
{
    int     delay, nextEvent;

    if (finished) {
        *finished = 0;
    }
    // ===================== added by xiao ===================== //
    // delay = 0; // open source code
    #define TIME_OUT_MS 1000
    delay = TIME_OUT_MS; // modifed by xiao, time out 1000 ms
    // ===================== added by xiao end ===================== //
    while (!finished || !*finished) {
        if (socketSelect(-1, delay)) {
            socketProcess();
        }
#if ME_GOAHEAD_CGI
        delay = websCgiPoll();
#else
        delay = MAXINT;
#endif
        nextEvent = websRunEvents();
        delay = min(delay, nextEvent);
    // ===================== added by xiao ===================== //
        delay = (delay <= 0 || delay >= TIME_OUT_MS) ? TIME_OUT_MS : delay;
    // ===================== added by xiao end ===================== //
    }
}
```