UHTTPD schema invoke details Lua

UHTTPD is a lightweight server with the default integration of the OPENWRT system, with the select mechanism having low performance requirements.

/usr/sbin/uhttpd-f-h/www-r wifibox-x/cgi-bin-l/slipt-l/usr/share/lua/wifibox/main.lua-t 60-t 30-k 20-a 1-n 3-n 100-r-P 0.0.0.0 80

This is a class of intelligent router uhttpd operating parameters, where-h specifies the root of the Web site, static file requests will be in this directory as the root directory,-l specifies the invoked LUA master handler,-x specifies the CGI run program, the source file running parameters are described below, Accessories for UTTTPD Full source

"Usage: %s -p [addr:]port [-h docroot]\n" "-f               do not fork to background\n ""-c file          Configuration file, default is  '/etc /httpd.conf ' \ n ' "-p [addr:]port  bind to specified address and port,  multiple allowed\n "#ifdef  HAVE_TLS"-s [addr:]port  like -p but  Provide https on this port\n ""-c file          asn.1 server certificate file\n ""-k file          asn.1 server private key file\n "#endif"-h directory     Specify the document root, default is  '. ' \ n ""-e string        use given virtual url as 404 error handler\n ""-I string        Use given filename as index page for  Directories\n ""-s              do  Not follow symbolic links outside of the docroot\n ""-D               Do not allow directory  listings, send 403 instead\n ""-r               enable rfc1918 filter\n "#ifdef  have_lua"-l string        URL prefix for Lua handler, default is  '/lua ' \ n ""-l file         lua handler script, omit  to disable lua\n "#endif#ifdef have_cgi "-x string       url prefix for  CGI handler, default is  '/cgi-bin ' \ n ' "-i .ext=path    use  interpreter at path for files with the given extension\n "#endif # if defined (have_cgi)  | |  defined (Have_lua) "-t seconds      cgi and lua script  timeout in seconds, default is 60\n "#endif"-t seconds       network timeout in seconds, default is 30\n ""-d string        url decode given string\n ""-r string        specify basic auth realm\n ""-m string        md5 crypt given string\n "

Requests received by the UHTTPD server are divided into three categories, static file requests, CGI requests (processing form information), and LUA requests (powerful implementation of multi-function processing and invocation) based on request headers

The first is the LUA request, the UHTTPD server is written in C, the C language calls LUA program implementation, LUA requests the processing of related programs, the C language and the Lua language through the stack to transfer data, the following is a simple C language call LUA program instance

Add.c#include        <stdio.h> #include           "Lua.h" #include          "Lualib.h" #include          "Lauxlib.h"/*the lua interpreter*/lua_state* l; Intluaadd (int x, int y) {        int sum;/*the  function name*/        lua_getglobal (L, "add");/*the  First argument*/        lua_pushnumber (L, x);/*the  Second argument*/        lua_pushnumber (L, y);/*call  the function with 2 arguments, return 1 result.*/         lua_call (l, 2, 1);/*get the result.*/         sum =  (int) lua_tonumber (l, -1);/*cleanup the return*/         lua_pop (l,1);         return sum;} Intmain (int argc, char *argv[]) {        int sum;/* Initialize lua*/        l = lua_open ();/*load Lua  base libraries*/        lual_openlibs (L);/*load the  script*/        lual_dofile (l,  "Add.lua");/*call the  add function*/        sum = luaadd (10,&NBSP;15); *print the result*/        printf ("The sum is  %d \n ", sum);/*cleanup lua*/        lua_close (L);         return 0;} 

Add.lua--add numbersfunction Add (x, y) return x + yend

UHTTPD schema invoke details Lua