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cs Windows 10 Version 1809 - November 2018 Update Nov 8, 2018 Windows 10 Version 1703 - October 2017 Update Oct 5, 2017
bluetooth-rfcomm-chat.yml Windows 10 Version 1809 - November 2018 Update Nov 8, 2018

Bluetooth RFCOMM chat sample

Shows how to use the Windows.Devices.Bluetooth.Rfcomm namespace to communicate over sockets.

Note: This sample is part of a large collection of UWP feature samples. If you are unfamiliar with Git and GitHub, you can download the entire collection as a ZIP file, but be sure to unzip everything to access shared dependencies. For more info on working with the ZIP file, the samples collection, and GitHub, see Get the UWP samples from GitHub. For more samples, see the Samples portal on the Windows Dev Center.

Note: You need two devices to run this sample.

##Chat Client Connects to an RFCOMM server running on another device and establishes a socket connection. Demonstrates reading from and writing to the server.

In order to use this scenario, you must have an Rfcomm server running on a remote device at the time of connection. Press the "Run" button, find the device in the list and select it. If the server has been found on the remote device, an Rfcomm socket will be established and you can chat with the remote device.

Be sure to "Request Access" to the device if the remote device is likely to become paired.

##Foreground Chat Server Publish an RFCOMM server with a custom service. When connected to by a client, establishes a socket connection to communicate with client. The server must be published when it is connected to for the client to find a valid service.

##Background Chat Server Same as the Foreground Chat Server, except that it initializes a Background task that runs only when a client device is connected. The host device will advertise support for the custom service in the SDP record until the background task is unregistered.

Note: The Windows universal samples require Visual Studio 2017 to build and Windows 10 to execute.

To obtain information about Windows 10 development, go to the Windows Dev Center

To obtain information about Microsoft Visual Studio and the tools for developing Windows apps, go to Visual Studio

Related topics


DataReaderWriter sample
DeviceEnumeration sample
StreamSocket sample
Hue Lights sample show, among other things, turning on the lights when the mobile phone enters Bluetooth range.


Windows.Devices.Bluetooth.Rfcomm namespace

System requirements

Client: Windows 10

Server: Windows Server 2016 Technical Preview

Phone: Windows 10

Build the sample

  1. Start Microsoft Visual Studio 2017 and select File > Open > Project/Solution.
  2. Go to the directory to which you unzipped the sample. Then go to the subdirectory containing the sample in the language you desire - either C++, C#, or JavaScript. Double-click the Visual Studio Solution (.sln) file.
  3. Press Ctrl+Shift+B, or select Build > Build Solution.

Run the sample

The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.

Deploying the sample

  • Select Build > Deploy Solution.

Deploying and running the sample

  • To debug the sample and then run it, press F5 or select Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or selectDebug > Start Without Debugging.