用golang fastcgi与nginx配合写web

1.配置nginx/FastCGI

This is actually pretty easy. I assume you already have some experience configuring nginx.conf. (Each install seemingly has different defaults as to the conf file's location,and contents,so I won't go over it here. Mine is in /usr/local/etc/nginx.)

I assume too that you've configured PHP with FastCGI before. If not,you may still understand what's happening.

All you have to do is tell nginx to pass certain requests,or maybe all of them if you wish,to FastCGI on a certain port. Our Go program will have a FastCGI handler listening on that same port. If you need a reference,my entire server { ... }block looks like this:

Notice that the server_nameis go.dev. I added this to my hosts file with the loopback IP address,127.0.0.1. So when I type http://go.dev in my browser,it resolves to my own box and nginx receives the request.

Also notice that the fastcgi_passport is not the default 9000,but is 9001. I did this because I already have php-fpm listening on port 9000. My Go app will listen on 9001.

Further notice that the fastcgi_passis in a location ~ { ... }block such that any page under /appof go.devwill be redirected to my Go program. You can change this path to whatever you'd like or even replace it with the location / { ... }block above if you want your Go program to be executed out of the root of the site.

Make a .go file (I'm calling mine app.go) with these contents (though I encourage you to study why/how it's working):

package main

import (

"net"

"net/http"

"net/http/fcgi"

)

type FastCGIServer struct{}

func (s FastCGIServer) ServeHTTP(resp http.ResponseWriter,req *http.Request) {

resp.Write([]byte("<h1>Hello,世界</h1>n<p>Behold my Go web app.</p>"))

}

func main() {

listener,_ := net.Listen("tcp","127.0.0.1:9001")

srv := new(FastCGIServer)

fcgi.Serve(listener,srv)

Here's what's happening: The main() function creates a network listener at localhost on port 9001,which is our FastCGI pass-thru port from the nginx config. Then we make a new FastCGIServer and serve requests that pop into that port. The fcgi packagehas one function: Serve,which blocks and waits for incoming requests. The interface is defined in the net/httppackage,which is where the ServeHTTP function comes from.