以lighttpd fastcgi写一下自己对fastcgi分布式的理解。
假设一台机器A上运行lighttpd，在这台主机上只是对请求进行分发。
而在其他多台机器上运行多个fastcgi进程，用来接收来自机器A分发过来的请求，并进行处理。
那lighttpd的配置fastcgi部分，应该配置ip和port（配置socket时是针对lighttpd和fastcgi进程在同一台机器上）。
而fastcgi进程应该监听ip:port上的请求。
稍微修改下前面的配置文件和代码。
server.document-root = "/mnt/hgfs/share/test/fcgi/"
server.port = 9090
socket_dir = "/tmp/"
server.username = "weifeilong"
server.groupname = "weifeilong"
server.errorlog = "/mnt/hgfs/share/test/fcgi/err.log"
mimetype.assign = (
".html" => "text/html",
".txt" => "text/plain",
".jpg" => "image/jpeg",
".png" => "image/png"
)
static-file.exclude-extensions = ( ".fcgi", ".php", ".rb", "~", ".inc" )
index-file.names = ( "index.html" )
server.modules += ("mod_fastcgi")
fastcgi.server = (
"/fellow" => (
"test.fastcgi.handler" => (
"host" => "127.0.0.1"//对于多台机器的，可以为其他运行fastcgi进程的ip
"port" => "9090"
#"socket" => socket_dir + "test.fastcgi.socket",
"check-local" => "disable",
#"bin-path" => "/mnt/hgfs/share/test/fcgi/test.fastcgi",
"max-procs" => 10,
)
)
)
fastcgi进程：
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <alloca.h>
#include <fcgiapp.h>
#include <stdio.h>
#define LISTENSOCK_FILENO 0
#define LISTENSOCK_FLAGS 0
int main(int argc, char** argv) {
openlog("testfastcgi", LOG_CONS|LOG_NDELAY, LOG_USER);
int err = FCGX_Init(); /* call before Accept in multithreaded apps */
if (err) { syslog (LOG_INFO, "FCGX_Init failed: %d", err); return 1; }
FCGX_Request cgi;
int sock = FCGX_OpenSocket("127.0.0.1:9090", 10);//在127.0.0.1:9090上监听。
err = FCGX_InitRequest(&cgi, sock, LISTENSOCK_FLAGS);
if (err) { syslog(LOG_INFO, "FCGX_InitRequest failed: %d", err); return 2; }
while (1) {
err = FCGX_Accept_r(&cgi);
if (err) { syslog(LOG_INFO, "FCGX_Accept_r stopped: %d", err); break; }
#if 1
char* header = (char*) alloca(200);
strcpy(header, "Status: 200 OK
Content-Type: text/html
");
FCGX_PutStr(header, strlen(header), cgi.out);
char response[1024];
if(!strncmp("GET", FCGX_GetParam("REQUEST_METHOD", cgi.envp), strlen("GET")))
{
FCGX_PutStr("GET", strlen("GET"), cgi.err);
if(!strncmp("action=getInfo", FCGX_GetParam("QUERY_STRING", cgi.envp), strlen("action=getInfo")))
{
snprintf(response, sizeof(response), "{"action": "getInfo"}
");
}
}
else if(!strncmp("POST", FCGX_GetParam("REQUEST_METHOD", cgi.envp), strlen("POST")))
{
char *post_data = (char*)malloc(1024);
FCGX_GetStr(post_data, 1024, cgi.in);
FCGX_PutStr(post_data, 1024, cgi.err);
if(!strncmp("action=resetInfo", post_data, strlen("action=resetInfo")))
{
snprintf(response, sizeof(response), "{"action": "resetInfo"}
");
}
}
FCGX_PutStr(response, strlen(response), cgi.out);
#endif
}
return 0;
}
先运行fastcgi程序，然后启动lighttpd。