29 lines
836 B
Lua
29 lines
836 B
Lua
-----------------------------------------------------------------------------
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-- UDP sample: echo protocol server
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-- LuaSocket sample files
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-- Author: Diego Nehab
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-----------------------------------------------------------------------------
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local socket = require("socket")
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host = host or "127.0.0.1"
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port = port or 7
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if arg then
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host = arg[1] or host
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port = arg[2] or port
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end
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print("Binding to host '" ..host.. "' and port " ..port.. "...")
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udp = assert(socket.udp())
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assert(udp:setsockname(host, port))
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assert(udp:settimeout(5))
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ip, port = udp:getsockname()
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assert(ip, port)
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print("Waiting packets on " .. ip .. ":" .. port .. "...")
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while 1 do
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dgram, ip, port = udp:receivefrom()
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if dgram then
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print("Echoing '" .. dgram .. "' to " .. ip .. ":" .. port)
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udp:sendto(dgram, ip, port)
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else
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print(ip)
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end
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end
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