socket_with_coroutine.lua
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| local socket = require('socket') | |
| local threads = {} | |
| local function receive(conn) | |
| conn:settimeout(0) | |
| local s, status = conn:receive(1024) | |
| if status == 'timeout' then | |
| coroutine.yield(conn) | |
| end | |
| return s, status | |
| end | |
| function echo(host, port, msg) | |
| local c = assert(socket.connect(host, port)) | |
| local count = 0 | |
| c:send( msg ) | |
| while true do | |
| local s, status = receive(c) | |
| count = count + #s | |
| if status == 'closed' then | |
| break | |
| else | |
| print(s) | |
| end | |
| end | |
| end | |
| local function get(host, port, msg) | |
| local co = coroutine.create( function () | |
| echo(host, port, msg) | |
| end) | |
| table.insert(threads, co) | |
| end | |
| local function dispatcher() | |
| while true do | |
| local n = #(threads) | |
| if n == 0 then break end | |
| local connections = {} | |
| for i = 1, n do | |
| local status, res = coroutine.resume(threads[i]) | |
| if not res then | |
| table.remove(threads, i) | |
| break | |
| else -- timeout | |
| table.insert(connections, res) | |
| end | |
| end | |
| if #connections == n then | |
| socket.select(connections) | |
| end | |
| end | |
| end | |
| local host = "192.168.0.9" | |
| local port = 3245 | |
| get(host, port, "hello, this the 1st message") | |
| get(host, port, "hello again, this the 2nd message") | |
| dispatcher() -- main loop |
