# aardio 范例: HTTP/WebSocket/JSON-RPC 三合一体服务端 ```aardio //WS-JSON-RPC服务端 import win.ui; /*DSG{{*/ var winform = win.form(text="HTTP/WebSocket/JSON-RPC 三合一体服务端";left=10;top=4;right=774;bottom=467) winform.add( btnPublish={cls="button";text="群发通知消息";left=505;top=411;right=621;bottom=450;db=1;dr=1;z=2}; btnSurvey={cls="button";text="发起调查任务";left=633;top=408;right=746;bottom=449;db=1;dr=1;z=3}; txtMessage={cls="edit";left=29;top=22;right=741;bottom=389;db=1;dl=1;dr=1;dt=1;edge=1;multiline=1;z=1} ) /*}}*/ //创建WebSocket服务端 import web.socket.server; var wsrv = web.socket.server(); //创建JSON-RPC服务端 import web.socket.jsonServer; var rpcServer = web.socket.jsonServer(wsrv); //指定客户端可以调用的对象和方法 rpcServer.external ={ /* 如果函数名首字符为$，第一个回调参数为$( 表示当前客户端套接字句柄 )。 */ $hello = function($,name){ return "hello " + name; } aardio= { hello = function(name){ return "aardio.hello " + name; } } } //客户端使用HTTP请求切换到WebSocket协议 wsrv.onUpgradeToWebsocket = function(hSocket,request,response,protocol,origin){ if( request.path == "/jsonrpc" ){ //允许指定的套接字开启JSON-RPC服务 return rpcServer.start(hSocket); } //禁止访问其他地址 response.close(); } //一个客户端连接过来了 wsrv.onOpen = function(hSocket){ var client = wsrv.client(hSocket); if(client) winform.txtMessage.print("客户端已连接", client.getRemoteIp() ); rpcServer.notify(hSocket,"hello","服务端通知"); } //一个客户端掉线了 wsrv.onClose = function(hSocket){ winform.txtMessage.print("客户端已断线",hSocket); } //一个客户端出错了 wsrv.onError = function(hSocket,err){ winform.txtMessage.print("出错了",hSocket,err); } //一个客户端发消息过来了 wsrv.onMessage = function(hSocket,msg){ winform.txtMessage.print(hSocket,msg.data); wsrv.send(hSocket,"WebSocket客户端，收到了你发过来的消息：" + msg.data) } //启动服务端 if( wsrv.start(,8879) ){ winform.txtMessage.print( wsrv.getUrl("jsonrpc"),"已启动 WebSocket/JSON-RPC 服务器"); winform.txtMessage.print( wsrv.httpServer.getUrl(),"已启动 HTTP服务器"); } else { winform.txtMessage.print("启动失败，建议修改端口号") } //同一个端口还可以同时运行HTTP服务端 wsrv.httpServer.run( function(response,request){ //response.loadcode( request.path ); winform.txtMessage.print("HTTP协议访问：",request.url); loadcodex(` `) } ); winform.btnPublish.oncommand = function(id,event){ //发布订阅模式：在指定频道发布消息，支持传给客户端不定个数的参数 rpcServer.publish("serverTime",time() ) } winform.btnSurvey.oncommand = function(id,event){ //调查模式：对客户端发起问询，支持传给客户端不定个数的参数 rpcServer.survey("clientTime"); } rpcServer.xcallback.clientTime = function(hSocket,result,err){ winform.txtMessage.print( wsrv.getRemoteIp(hSocket) +"返回调查结果:" , result ); } winform.show() win.loopMessage(); ```