- Lua require 绝对和相对路径(已经解决)
- luajit 执行文件默认安装路径
- lua-resty-redis 扩展
- lua-resty-websocket 扩展
- lua-cjson 扩展
- lua-dkjson 扩展
- Lua 权限验证
- lua-resty-string 扩展
- lua-resty-http 扩展
- lua-resty-mysql 扩展
- lua-resty-shell 扩展
- lua-resty-template 扩展
- lua-resty-template 扩展
- openresty扫描代码全局变量
- 连接数据库
- OpenResty缓存
- lua-resty-upstream-healthcheck 使用
- Openresty和Nginx_RTMP 模块共存问题
- Openresty配置RTMP模块的多worker直播流
- Openresty配置RTMP模块的推流地址鉴权实例
- Ngx_lua 写入Redis数据，通过CURL请求
- Nginx编写的Lua接口使用URL过期和签名验证机制过滤非法访问接口
- Nginx查看并发连接数
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代码引入：
lua_package_path "/opt/openresty/nginx/lua/lua-resty-redis/lib/?.lua;;"; -
Lua脚本实现一个CDN的反向代理功能(智能查找CDN节点)(测试成功,可上线)
- nginx.conf 配置信息
http { lua_package_path "/opt/openresty/nginx/lua/lua-resty-redis/lib/?.lua;;"; server { listen 80; server_name localhost; location ~ \/.+\/.+\.(m3u8|ts) { if ($uri ~ \/([a-zA-Z0-9]+)\/([a-zA-Z0-9]+)(|-).*\.(m3u8|ts)) { set $app_name $1; set $a $2; } set $stream_id ""; default_type 'text/html'; rewrite_by_lua_file /opt/openresty/nginx/lua/proxy_pass_cdn.lua; proxy_connect_timeout 10; proxy_send_timeout 30; proxy_read_timeout 30; proxy_pass $stream_id; } } }
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Lua脚本结合 Nginx+Lua+Local Redis+Mysql服务器缓存
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Nginx+Lua+Local Redis+Mysql集群架构
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Lua脚本结合 Redis 统计直播流播放次数、链接次数等等信息
- nginx.conf
server { # 配置虚拟服务器80 listen 80; server_name 127.0.0.1:8088; location ~* /live/(\w+)/ { set $total_numbers ""; set $stream_name $1; lua_code_cache off; rewrite_by_lua_file /opt/openresty/nginx/conf/Lua/total_numbers.lua; proxy_pass http://127.0.0.1:8088; } }
- 代理服务器
server { # 配置虚拟服务器8088 listen 8088; server_name 127.0.0.1:8088; location /live { add_header Cache-Control no-cache; add_header 'Access-Control-Allow-Origin' '*' always; add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range'; add_header 'Access-Control-Allow-Headers' 'Range'; types{ application/dash+xml mpd; application/vnd.apple.mpegurl m3u8; video/mp2t ts; } alias /home/tinywan/HLS/live/; } }
- CURL请求地址：
http://192.168.18.143/live/tinywan123/index.m3u8 - Lua 脚本
- nginx.conf
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- 代码引入：
lua_package_path "/opt/openresty/nginx/lua/lua-resty-websocket/lib/?.lua;;"; - Lua脚本实现一个websocket连接(测试成功,可上线)
- nginx.conf 配置信息
http { lua_package_path "/opt/openresty/nginx/lua/lua-resty-websocket/lib/?.lua;;"; server { listen 80 so_keepalive=2s:2s:8; #为了防止半开TCP连接，最好在Nginx监听配置指令中启用TCP keepalive： server_name localhost; location /ws { lua_socket_log_errors off; lua_check_client_abort on; lua_code_cache off; # 建议测试的时候最好关闭缓存 content_by_lua_file /opt/openresty/nginx/conf/Lua/websocket.lua; } } }
- WebSockets服务器Lua脚本websocket.lua
- websockets.html客户端代码,代码路径：/usr/local/openresty/nginx/html
- 然后打开启用了WebSocket支持的浏览器，然后打开以下url：
- 基本用法
- nginx.conf
location /cjson { content_by_lua_block { local cjson = require "cjson" local json = cjson.encode({ foo = "bar", some_object = {}, some_array = cjson.empty_array }) ngx.say(json) } }
- curl 请求
root@tinywan:/opt/openresty/nginx/conf# curl http://127.0.0.1/cjson {"some_object":{"tel":13669313112,"age":24},"name":"tinywan","some_array":[]}
- nginx.conf
- lua对象到字符串、字符串到lua对象
- OpenResty 引用第三方 resty 库非常简单，只需要将相应的文件拷贝到 resty 目录下即可
- 我服务器OpenResty 的 resty 路径：
/opt/openresty/lualib/resty - 下载第三方 resty 库：git clone lua-resty-session 文件路径以及内容：
tinywan@tinywan:/opt/openresty/nginx/lua/lua-resty-session/lib/resty$ ls session session.lua
- 特别注意：这里拷贝的时候要要把session文件和session.lua 文件同时吧、拷贝过去，否则会报错误：
/opt/openresty/lualib/resty/session.lua:34: in function 'prequire' /opt/openresty/lualib/resty/session.lua:211: in function 'new' /opt/openresty/lualib/resty/session.lua:257: in function 'open' /opt/openresty/lualib/resty/session.lua:320: in function 'start'
- 拷贝完毕后
/opt/openresty/lualib/restyOpenResty 引用第三方 resty 的所有库文件
tinywan@tinywan:/opt/openresty/lualib/resty$ ls
aes.lua core.lua http_headers.lua lock.lua lrucache.lua memcached.lua random.lua session sha1.lua sha256.lua sha512.lua string.lua upstream
core dns http.lua lrucache md5.lua mysql.lua redis.lua session.lua sha224.lua sha384.lua sha.lua upload.lua websocket- 基本用法
location /start { content_by_lua_block { local session = require "resty.session".start() session.data.name = "OpenResty Fan Tinywan" session:save() ngx.say("<html><body>Session started. ", "<a href=/test>Check if it is working</a>!</body></html>") ngx.say(session.data.name,"Anonymous") } }
- curl 请求
tinywan@tinywan:/opt/openresty/nginx/conf$ curl http://192.168.18.143/start <html><body>Session started. <a href=/test>Check if it is working</a>!</body></html> OpenResty Fan Tinywan Anonymous
- Lua 一个HLS的简单地址访问权限验证
- Nginx.conf 配置
location ^~ /live/ { add_header Cache-Control no-cache; add_header 'Access-Control-Allow-Origin' '*' always; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range'; add_header 'Access-Control-Allow-Headers' 'Range'; types{ application/dash+xml mpd; application/vnd.apple.mpegurl m3u8; video/mp2t ts; } if ( $uri ~ \.m3u8 ) { lua_code_cache off; access_by_lua_file /opt/openresty/nginx/lua/access.lua; } root /home/tinywan/HLS; }
- access.lua 文件内容
if ngx.req.get_uri_args()["wsSecret"] ~= "e65e6a01cf26523e206d5bb0e2a8a95a" then return ngx.exit(403) end
- Nginx.conf 配置
- MD5加密的简单基本用法 md5.lua
local resty_md5 = require "resty.md5" local md5 = resty_md5:new() if not md5 then ngx.say("failed to create md5 object") return end local ok = md5:update("hello") if not ok then ngx.say("failed to add data") return end local digest = md5:final() -- ngx.say("md5",digest) ---注意:这样直接输出是乱码 local str = require "resty.string" ngx.say("md5: ", str.to_hex(digest)) ---注意:必须通过字符串转码方可打印输出 -- yield "md5: 5d41402abc4b2a76b9719d911017c592"
- 在OpenResty中需要避免全局变量的使用，为此春哥写了一个perl工具，可以扫描openresty lua代码的全局变量
- https://github.com/openresty/openresty-devel-utils/blob/master/lua-releng
- 用法相当简单
- 将代码保存成lua-releng文件
- 更改lua-releng的权限，chmod 777 lua-releng
- 假设有一个源码文件为test.lua
- 执行./lua-releng test.lua，则会扫描test.lua文件的全局变量，并在屏幕打印结果