Skip to main content

LuaSocket

LuaSocket manual

Example: connection timeout​

local socket = require("socket")
local sock = socket.tcp()
sock:settimeout(0.2) -- set connection timeout in seconds
if (sock:connect("220.181.57.217", 80)) then
    sock:close()
    sys.alert("Connected")
else
    sys.alert("Timeout")
end

Note: Uses sys.alert

Example: simulate HTTP GET for Baidu homepage​

local socket = require('socket')

local sock = socket.tcp()
local ip = assert(socket.dns.toip('www.baidu.com'), 'DNS resolve failed')
sock:settimeout(10)
assert(sock:connect(ip, 80) == 1, 'Connect failed or timeout')

assert(
    sock:send(
        'GET / HTTP/1.1\r\n'..
        'Host: www.baidu.com\r\n'..
        'Accept: */*\r\n'..
        'Connection: close\r\n'..
        '\r\n'
    ),
    'Send timeout'
)

local buf = {}
repeat
    local chunk, status, partial = sock:receive(4096)
    if (chunk) then
        buf[#buf + 1] = chunk
    else
        if (partial) then
            buf[#buf + 1] = partial
        end
    end
until status == "closed"
sock:close()

sys.alert(table.concat(buf))

Note: Uses sys.alert, table.concat