Uncategorized | Free Online Tutorials

Lua: Retrieve partial ftp file at specific range

phptuts April 22, 2022

Read more: https://tools.ietf.org/id/draft-bryan-ftp-range-03.html We use extension library luasocket Edit file: https://github.com/lunarmodules/luasocket/blob/master/src/ftp.lua Local location: /usr/share/lua/5.1/socket/ftp.lua Add function: Edit function tget , add line if gett.rang then…

Lua Nginx|Openresty: use session with redis cluster

phptuts April 15, 2022

Require: lua-resty-redis , lua-resty-lock , lua-resty-redis-cluster , lua-resty-session Example nginx.conf Now test http://localhost:8080/test/session

Lua Nginx | Openresty: how to get POST data

phptuts April 14, 2022

Case 1: client_body_in_file_only off; Case 2: client_body_in_file_only clean; client_body_in_file_only on; We recommend using client_body_in_file_only clean; and read binary file when PUT content of file to…

Lua snippet: check file exists

phptuts April 14, 2022

Lua snippet: check file exists Example: Online demo: here

Lua snippet: copy file

phptuts April 12, 2022

Lua snippet: copy file Source: https://forum.cockos.com/showpost.php?&p=2360581&postcount=3 In this snippet we see method to get file size: new_file_sz = new_file:seek( "end" )

Lua Nginx | Openresty : lua-resty-string error: undefined symbol: EVP_CIPHER_CTX_init

phptuts April 12, 2022

Sample code: Check log: tail /var/log/nginx/error.log Reason: lua-resty-string v0.15 remove EVP_CIPHER_CTX_init Check here Check version in file: /usr/local/share/lua/5.1/resty/string.lua lua-resty-string Version 0.09 You must update to…

Luarocks/git error: The unauthenticated git protocol on port 9418 is no longer supported.

phptuts April 11, 2022

Example error: Fix: run this command first: git config --global url."https://".insteadOf git:// Done, retry: now, we have two files xmodem.lua rediscluster.lua in folder /usr/local/share/lua/5.1/resty/

Openresty: Difference between ngx.var.arg and ngx.req.get_uri_args

phptuts April 8, 2022

Both ngx.var.arg_x and ngx.req.get_uri_args["x"] are to get the parameters in the request uri, for example: https://tutorialspots.com/?test=1 In order to get the input parameter test, either…

MongoDB: how to bind ip with multiple ip address

phptuts December 12, 2021

MongoDB: how to bind ip with multiple ip address Solution for binding multiple IP Addresses bindIp: "127.0.0.1,xxx.xxx.xxx.xxx" Note: No spaces after commas

How to stop Chrome from redirecting to HTTPS

phptuts November 6, 2021

Step 1: navigate to chrome://net-internals/#hsts Step 2: scroll to the end of page: Delete domain security policies Enter your domain then click Delete