Question

我是Lua的新手，并尝试使用luasocket和copas在Openwrt中实现TCP服务器和客户端。目标是使3个程序在异步联网中通过套接字彼此通信。

下面是脚本

local copas = require("copas")
local socket = require("socket")

local host = "localhost"
local port = 20000

local hostcl1 = "localhost"
local portcl1 = 20001

local hostcl2 = "localhost"
local portcl2 = 20002

local function echoHandler(skt)
    skt = copas.wrap(skt)
    while true do
        local data = skt:receive()
        print("data received:", data, "from:", skt:getsockname())
        if not data or data == nil then
            break
        end
    end
end

local function sendToNeighbor(host, port, data)
    skt = socket.connect(host, port)
    if (skt ~= nil) then
        skt = copas.wrap(skt)
        print("client connected to " ..host.. ":" ..port.. "...")
        copas.send(skt, data.."\n")
        print("data sent")
        skt:close()
        print("Closed!")
    else
        print("client failed to send to " ..host.. ":" ..port.. "...")
    end
end

local server = socket.bind(host, port)

copas.addserver(server, echoHandler, 0)

SendInterval = 10
SecBefore = os.date('%S')
SecSend = (SecBefore + SendInterval)%60

while true do
    copas.step(0)
    local Sec = os.date('%S')
    if ( tonumber(Sec) == SecSend ) then
        dataToClient1 = "Test1"
        dataToClient2 = "Test2"
        sendToNeighbor(hostcl1, portcl1, dataToClient1)
        sendToNeighbor(hostcl2, portcl2, dataToClient2)
        SecBefore = Sec
        SecSend = (SecBefore + SendInterval)%60
    end
end

在上面的脚本中，我在host =“ localhost”中使用了3个类似的程序，并使用了3个不同的端口（20000、20001和20002）。我希望每个程序互相听，并每10秒发送一次彼此的数据。问题是程序每次使用copas.send函数发送数据时，都会发生此错误。

luajit: /usr/local/share/lua/5.1/copas.lua:285: attempt to yield across C-call boundary

我尝试使用lua 5.1，lua 5.1 + CoCo和LuaJIT，并且总是会发生此错误。有解决的办法吗？谢谢

luasocket + copas错误-尝试在C调用边界上屈服

0 个答案: