效果如图:

用法：

var sev = STDPingServices.init(address: nowProxy.host)
        sev!.callbackHandler = { (item, arr) in
            if (item?.status == STDPingStatus.didStart) {
                //开始发包
                if (index + 1 < self.nodes!.count) {
                    self.nextPing(index: (index + 1))
                }
                print("didStart:\(self.speedArr![index]) index :\(index)")
            }else if (item?.status == STDPingStatus.didFailToSendPacket) {
                //发包失败
                self.speedArr![index] = "连接失败"
                print("didFailToSendPacket:\(self.speedArr![index]) index :\(index)")
                if (index + 1 >= self.nodes!.count) {
                    self.nodeListView.reloadData()
                }
            }else if (item?.status == STDPingStatus.didReceivePacket) {
                //收到回包
                self.speedArr![index] = String.init(format: "%.2fms", item?.timeMilliseconds ?? 0  >= 100.0 ? item?.timeMilliseconds ?? 0 - 50.0 : item?.timeMilliseconds ?? 0 )
            print("didReceivePacket:\(self.speedArr![index]) index :\(index)")
                if (index + 1 >= self.nodes!.count) {
                    self.nodeListView.reloadData()
                }
            }else if (item?.status == STDPingStatus.didReceiveUnexpectedPacket) {
                //收到意外回包
                self.speedArr![index] = "超时"
                if (index + 1 >= self.nodes!.count) {
                    self.nodeListView.reloadData()
                }

                print("didReceiveUnexpectedPacket:\(self.speedArr![index]) index :\(index)")
            }else if (item?.status == STDPingStatus.didTimeout) {
                //超时
                self.speedArr![index] = "超时"
            print("didTimeout:\(self.speedArr![index]) index :\(index)")
                if (index + 1 >= self.nodes!.count) {
                    self.nodeListView.reloadData()
                }
            }else if (item?.status == STDPingStatus.error) {
                //失败
                self.speedArr![index] = "连接失败"
                if (index + 1 >= self.nodes!.count) {
                    self.nodeListView.reloadData()
                }
                print("error:\(self.speedArr![index]) index :\(index)")
            }else if (item?.status == STDPingStatus.finished) {
                //完成
                print("finished:\(self.speedArr![index]) index :\(index)")
            }
            
            
            if(item?.status != STDPingStatus.didStart){
                self.nodes![index] = nowProxy
                sev?.cancel()
            }
            
            
            
            
        };
        sev!.startPing();
    }

ping文件

文章附带下载链接，文章开头PingDemo就是下载链接.