网络地址建立socket连接

testTCPPing(host : string){ 
     connection.getAddressesByName(host, (error: BusinessError, data: connection.NetAddress[]) => { 
       if (error || !data || data.length == 0){ 
         console.info("error:"+JSON.stringify(error)) 
         return 
       }else { 
         let ia = {} as socket.NetAddress; 
         for (let i = 0; i < data.length; i++) { 
           if (data[i].family == 1) { 
             ia = data[i]; 
             console.info("ia add:" + JSON.stringify(ia)) 
           } 
         } 
         console.info("get address:" + JSON.stringify(ia)) 
       // 
       let tcp = socket.constructTCPSocketInstance(); 
       let str =""; 
  
           console.info("建立tcp地址连接") 
          
           let ipAddress: socket.NetAddress = {} as socket.NetAddress; 
           ipAddress.address = ia.address; 
           ipAddress.family = ia.family; 
          
           let tcpConnect: socket.TCPConnectOptions = {} as socket.TCPConnectOptions; 
           tcpConnect.address = ipAddress; 
           tcpConnect.timeout = 10000; 
           tcp.on('connect', () => { 
             console.log('connect success!!') 
           }); 
           tcp.connect(tcpConnect, (err: BusinessError) => { 
             if (err) { 
               str = 'connect failed!!' + JSON.stringify(err) 
               console.log('connect failed!!' + JSON.stringify(err)) 
             } else { 
               str = 'connect1 success!!' 
               console.log('connect1 success!!') 
             } 
           }); 
  
       } 
     }) 
  }