Openresty websocket: payload too big
We use lua-resty-websocket to create websocket server: https://github.com/openresty/lua-resty-websocket And we see in log file: Solution: chunk data then send each chunk: We use some value…
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Lua Nginx | Openresty: Flushes the system write buffers
We use method ngx.flush : Demo: http://5.161.72.222/test/flush
FFmpeg error: [libx264] width not divisible by 2
Example command: ffmpeg -i "'/var/www/html/videos/6262775de2277232154e3a03" -vf scale=-1:360 -r 16 "/var/www/html/videos/6262775de2277232154e3a03_360p.mp4" Error output: Fix: use filter scale=-2:yourheight Example: ffmpeg -i "'/var/www/html/videos/6262775de2277232154e3a03" -vf scale=-2:360 -r 16 "/var/www/html/videos/6262775de2277232154e3a03_360p.mp4"
Lua: Retrieve partial ftp file at specific range
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
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
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
Lua snippet: check file exists Example: Online demo: here
Lua snippet: copy file
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
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.
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/