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2017.01.12 UWP TCP Client Sample in C#

UWP TCP Client Sample in C#

기술문서 2017. 1. 12. 12:43

라즈베리파이에서 Visual Studio를 이용하여 C#을 올릴 경우 UWP(Universal Windows Platform)을 사용하게 됩니다. 아쉬운 점은 많은 기존 API들을 아직 지원하지 않는 점입니다. 이에 간단한 Client Sample을 하나 공유합니다.

아래는 동작 코드가 아니며, 프로그램 코드의 일부로 Socket 및 Class를 닫거나, 수신을 정지하는 상태 등은 임의로 만드시면 될 것 같습니다.

감사합니다.

This code is a sample code of the UWP for Windows IOT which does not support many previous APIs.

The sample code is a part of the whole-code and cannot be compliled thus please refer it and write your own code for closing class and sockets, and receiving conditions.

Thank you

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
using Windows.Networking.Sockets;
using Windows.Networking;
using Windows.Storage.Streams;
using System.Text.RegularExpressions;
using Windows.Storage;
using Windows.Devices.Gpio;

namespace Sample
{
    class ClientSample
    {
        private static Windows.Networking.Sockets.StreamSocket gsocket = null;
        private static StreamWriter writer = null;
        private static StreamReader reader = null;
        private static Stream streamOut = null;
        private static Stream streamIn = null;
        private string CRLF = "\x0d\x0a";

private async Task MakeConnection()
        {
                MainPage.StaticLogBox.Text += ("\nNEW CONNECTION");
                gsocket = new Windows.Networking.Sockets.StreamSocket();
                string strIP = "192.168.0.5"
                stinrg iLLZGP_Port = 3306;

Windows.Networking.HostName serverHost = new Windows.Networking.HostName(strIP);
                await gsocket.ConnectAsync(serverHost, Convert.ToString(iLLZGP_Port));
                streamOut = gsocket.OutputStream.AsStreamForWrite();
                writer = new StreamWriter(streamOut);
                streamIn = gsocket.InputStream.AsStreamForRead();
                reader = new StreamReader(streamIn);
        }

public async Task LoginToServer() {
            string strID = "ID";
            string strPassword = "Password";
            string strReq = "<Request mode='INIT' target='Login'><ID>" + strID + "</ID><PW>" + 
                                  strPassword + "</PW><ClientType>2</ClientType></Request>\n" + CRLF;
            try {
                string RecvText = "";
                RecvText = await SendandReceive(strReq, RecvText);
                MainPage.StaticLogBox.Text += ("\nRequest:" + strReq);
                MainPage.StaticLogBox.Text += ("\nResponse:" + RecvText);
                }
            } catch (Exception e)
            {
                MainPage.StaticLogBox.Text += ("LOGIN SVR Receive failed with error: " + e.Message);
            }
        }

private async Task<String> SendandReceive(string SendText, string received)         {
            try
            {
                await writer.WriteAsync(SendText);
                await writer.FlushAsync();
                string readText = "";

while ((readText = await reader.ReadLineAsync()) != null)
                {
                    received += readText;
                    if(readText.Contains("</RESPONSE"))  
                          // EOF or Condition of the last sentance
                    {
                        break;
                    }
                }
                IsActive = true;
            }
            catch (Exception e)
            {
                //Handle exception here.           
                MainPage.StaticLogBox.Text += ("Send & Receive failed with error: "
                         + SendText + " / " + e.Message);

if (streamIn != null) { streamIn.Dispose(); streamIn = null; }
                if (streamOut != null) { streamOut.Dispose(); streamOut = null; }
                if (writer != null) { writer.Dispose(); writer = null; }
                if (reader != null) { reader.Dispose(); reader = null; }
                gsocket.Dispose(); gsocket = null;
                IsActive = false;
                return "";
            }
            return received;
        }
    }
}