add:补充一个105+W5500异步回调的demo https://gitee.com/openLuat/LuatOS/issues/I6LNT0

demo/socket/Air105/async_socket_demo.lua

@@ -0,0 +1,98 @@
+-- netlab.luatos.com上打开TCP，然后修改IP和端口号，自动回复netlab下发的数据，自收自发测试
+
+local server_ip = "152.70.80.204"
+local server_port = 55619
+local UDP_port = 37834
+local ssl_port = 35528
+local rxbuf = zbuff.create(8192)
+local function netCB(netc, event, param)
+    if param ~= 0 then
+        sys.publish("socket_disconnect")
+        return
+    end
+	if event == socket.LINK then
+	elseif event == socket.ON_LINE then
+        socket.tx(netc, "hello,luatos!")
+	elseif event == socket.EVENT then
+        socket.rx(netc, rxbuf)
+        socket.wait(netc)
+        if rxbuf:used() > 0 then
+            log.info("收到", rxbuf:toStr(0,rxbuf:used()):toHex())
+            log.info("发送", rxbuf:used(), "bytes")
+            socket.tx(netc, rxbuf)
+        end
+        rxbuf:del()
+	elseif event == socket.TX_OK then
+        socket.wait(netc)
+        log.info("发送完成")
+	elseif event == socket.CLOSE then
+        sys.publish("socket_disconnect")
+    end
+end
+
+local function socketTask()
+	local netc = socket.create(nil, netCB)
+	socket.debug(netc, true)
+	socket.config(netc, nil, nil, nil, 300, 5, 6)   --开启TCP保活，防止长时间无数据交互被运营商断线
+    while true do
+        local succ, result = socket.connect(netc, server_ip, server_port)
+        if not succ then
+            log.info("未知错误，5秒后重连")
+        else
+            local result, msg = sys.waitUntil("socket_disconnect")
+        end
+        log.info("服务器断开了，5秒后重连")
+        socket.close(netc)
+        log.info(rtos.meminfo("sys"))
+        sys.wait(5000)
+    end
+end
+
+local function UDPTask()
+    local netc = socket.create(nil, netCB)
+    socket.debug(netc, true)
+    socket.config(netc, nil, true, nil, 300, 5, 6)   --开启TCP保活，防止长时间无数据交互被运营商断线
+    while true do
+        local succ, result = socket.connect(netc, server_ip, UDP_port)
+        if not succ then
+            log.info("未知错误，5秒后重连")
+        else
+            local result, msg = sys.waitUntil("socket_disconnect")
+        end
+        log.info("服务器断开了，5秒后重连")
+        socket.close(netc)
+        log.info(rtos.meminfo("sys"))
+        sys.wait(5000)
+    end
+end
+
+
+local function SSLTask()
+    local netc = socket.create(nil, netCB)
+    socket.debug(netc, true)
+    socket.config(netc, nil, nil, true, 300, 5, 6)   --开启TCP保活，防止长时间无数据交互被运营商断线
+    while true do
+        local succ, result = socket.connect(netc, server_ip, ssl_port)
+        if not succ then
+            log.info("未知错误，5秒后重连")
+        else
+            local result, msg = sys.waitUntil("socket_disconnect")
+        end
+        log.info("服务器断开了，5秒后重连")
+        socket.close(netc)
+        log.info(rtos.meminfo("sys"))
+        sys.wait(5000)
+    end
+end
+
+function socketDemo()
+	sys.taskInit(socketTask)
+end
+
+function UDPDemo()
+    sys.taskInit(UDPTask)
+end
+
+function SSLDemo()
+    sys.taskInit(SSLTask)
+end