feat(examples): add an example for http server using multiiprocess

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>

examples/network/http_server.lua

@@ -85,7 +85,6 @@ end
 
 local options = {
     reuseaddr = true,
-    reuseport = true,
     http_keepalive = 30,
     tcp_keepalive = 5,
     tcp_nodelay = true,

examples/network/http_server_multiprocess.lua

@@ -0,0 +1,58 @@
+#!/usr/bin/env eco
+
+local http = require 'eco.http.server'
+local time = require 'eco.time'
+local log = require 'eco.log'
+local sys = require 'eco.sys'
+
+log.set_level(log.DEBUG)
+
+local function handler(con, req)
+    if req.path == '/test' then
+        con:add_header('content-type', 'text/html')
+
+        con:send('<h1>Lua-eco HTTP server test</h1>\n')
+
+        local remote_addr = con:remote_addr()
+        con:send('<h2>remote addr: ', remote_addr.ipaddr, '</h2>\n')
+        con:send('<h2>remote port: ', remote_addr.port, '</h2>\n')
+        con:send('<h2>method: ', req.method, '</h2>\n')
+        con:send('<h2>path: ', req.path, '</h2>\n')
+        con:send('<h2>http version: ', req.major_version .. '.' .. req.minor_version, '</h2>\n')
+
+        con:send('<h2>query:', '</h2>\n')
+        for name, value in pairs(req.query) do
+            con:send('<p>', name, ': ', value, '</p>\n')
+        end
+
+        con:send('<h2>headers:', '</h2>\n')
+        for name, value in pairs(req.headers) do
+            con:send('<p>', name, ': ', value, '</p>\n')
+        end
+
+        con:send('<h2>body:', con:read_body() or '', '</h2>\n')
+    else
+        return con:serve_file(req)
+    end
+end
+
+local options = {
+    reuseaddr = true,
+    reuseport = true
+}
+
+local function http_server()
+    local srv, err = http.listen(nil, 8080, options, handler)
+    if not srv then
+        print(err)
+        return
+    end
+end
+
+for _ = 1, sys.get_nprocs() do
+    sys.spawn(http_server)
+end
+
+while true do
+    time.sleep(1)
+end