BR_YKC/4G/code/core/linksocket.lua

require "socket"
require "log"

-- 目标服务器IP和端口
local ip, port = "74538dd1hu30.vicp.fun", "50752"
-- 连接数量
local clientCount = 1
-- 存储所有客户端
local clients = {}

-- 初始化多个socket连接
for i = 1, clientCount do
    local client = {
        id = i,
        socket = nil,
        connected = false
    }

    -- 为每个socket创建独立的连接任务
    sys.taskInit(function()
        while true do
            while not socket.isReady() do sys.wait(1000) end
            client.socket = socket.tcp()
            log.debug("Client " .. client.id .. ": Connecting to " .. ip .. ":" .. port)
            while not client.socket:connect(ip, port) do
                log.warn("Client " .. client.id .. ": Connection failed, retrying...")
                sys.wait(2000)
            end
            client.connected = true
            log.debug("Client " .. client.id .. ": Connected successfully")
            -- 发送连接成功信息到串口
            uart.write(1, "Socket " .. client.id .. " connected\r\n")

            -- 保持连接并处理数据
            while client.socket:asyncSelect(60, "ping") do end

            client.connected = false
            client.socket:close()
            log.error("Client " .. client.id .. ": Disconnected")
            -- 发送断开连接信息到串口
        end
    end)

    -- 存储客户端
    clients[i] = client
end


local function toHexcode(str) 
    local hexcode = ""
    for i = 1, #str do
        hexcode = hexcode .. string.format("%02X", str:byte(i))
    end
    return hexcode
end

-- 测试代码，异步回调接收数据
sys.subscribe("SOCKET_RECV", function(id)
    -- 遍历所有客户端，找到对应的连接
    for i, client in ipairs(clients) do
        if client.socket and client.socket.id == id then
            -- 转发到串口，添加socket标识，并清理数据
            local data = client.socket:asyncRecv()
            log.info("Client " .. client.id .. ": Received data: " .. toHexcode(data))
            -- 转发到串口，添加socket标识
            local frame = string.char(0x55) .. string.char(0xAA) .. string.char(0x01) .. string.char(i) .. string.char(#data) .. data .. string.char(0xAA) .. string.char(0x55)
            uart.write(1, frame)
           
            break
        end
    end
end)



-- 发送数据到指定socket
function sendToSocket(id_byte, msg)
    if clients[id_byte] and clients[id_byte].socket and clients[id_byte].connected then
        clients[id_byte].socket:asyncSend(msg)
    else
        log.error("Socket " .. id_byte .. " not connected or does not exist")
    end
end