使用libwebsocket写一个server

lws-minimal-ws-server这些例程在buildroot里面，更新的话只能整体编译，十分麻烦和耗时，在sdk外面建立项目，单独开发，会更合适。

创建程序文件夹和文件

mkdir ./ws_cam
cd ./ws_cam
cp ../luckfox-pico/sysdrv/source/buildroot/buildroot-2023.02.6/output/build/libwebsockets-4.3.2/minimal-examples/ws-server/minimal-ws-server/*.c ./
thouch ./CMakeLists.txt

编辑源代码

用vscode打开ws_cam目录，修改里面的源代码
CMakeLists.txt

project(ws_cam C)
cmake_minimum_required(VERSION 2.8.12)

include_directories(../luckfox-pico/sysdrv/source/buildroot/buildroot-2023.02.6/output/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/include)
link_directories(../luckfox-pico/sysdrv/source/buildroot/buildroot-2023.02.6/output/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/lib)

set(CMAKE_C_COMPILER ../luckfox-pico/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-gcc)
set(CMAKE_CXX_COMPILER ../luckfox-pico/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf/bin/arm-rockchip830-linux-uclibcgnueabihf-g++)
set(EXC ws_cam)
set(SRCS minimal-ws-server.c )


add_executable(${EXC} ${SRCS})
target_link_libraries(${EXC} websockets ssl crypto blkid z)

minimal-ws-server.c

static const struct lws_http_mount mount = {
	/* .mount_next */		NULL,		/* linked-list "next" */
	/* .mountpoint */		"/",		/* mountpoint URL */
	/* .origin */			"/oem/usr/www",  /* serve from dir */
	/* .def */			"index.html",	/* default filename */
	/* .protocol */			NULL,
	/* .cgienv */			NULL,
	/* .extra_mimetypes */		NULL,
	/* .interpret */		NULL,
	/* .cgi_timeout */		0,
	/* .cache_max_age */		0,
	/* .auth_mask */		0,
	/* .cache_reusable */		0,
	/* .cache_revalidate */		0,
	/* .cache_intermediaries */	0,
	/* .origin_protocol */		LWSMPRO_FILE,	/* files in a dir */
	/* .mountpoint_len */		1,		/* char count */
	/* .basic_auth_login_file */	NULL,
};

这里把前端的根目录文件夹指定为上次vue3前端的根目录/oem/usr/www

编译测试

cmake ./
make
scp ./ws_cam root@192.168.9.163:/oem/usr/bin

在rv1106摄像头上运行ws_cam

/oem/usr/bin/ws_cam

用浏览器打开网址
192.168.9.163:7681
可见vue3欢迎页面