WebSocket Client Read and Write Samples

About The Samples

In this sample, the TIBCO StreamBase® WebSocket Client Read adapter and the TIBCO StreamBase WebSocket Client Write adapter work together to read data from a server, modify it, and write it back to the server.

When this sample is started a web server is created on port 8080.

Running The Samples in StreamBase Studio

  1. In the Package Explorer, double-click to open the WebSocketClient.sbapp. Make sure the application is the currently active tab in the EventFlow Editor.

  2. Click the Run button. This opens the SB Test/Debug perspective and starts the application.

  3. In the Manual Input window under the Feed stream, enter Equity, Bid, BidSize, Ask, and AskSize data and click send.

  4. In the Application Output view, observe a tuple emitted on the ReadAdapterDataOut stream indicating that the WebSocket Client Read adapter successfully read data from the server. Also notice that on the WebSocketDataIn stream, a tuple is entered with the Data field reading "This data was written by an adapter" followed by the data entered in the manual input window, indicating that the WebSocket Client Write adapter successfully wrote data to the server.

  5. Press F9 or click the Stop Running Application button.

Importing This Sample into StreamBase Studio

In StreamBase Studio, import this sample with the following steps:

  • From the top menu, select FileLoad StreamBase Sample.

  • Select WebSocket Client Read Write Adapters from the StreamBase Standard Adapters category.

  • Click OK.

StreamBase Studio creates a single project containing the sample files.

Sample Location

When you load the sample into StreamBase Studio, Studio copies the sample project's files to your Studio workspace, which is normally part of your home directory, with full access rights.

Important

Load this sample in StreamBase Studio, and thereafter use the Studio workspace copy of the sample to run and test it, even when running from the command prompt.

Using the workspace copy of the sample avoids permission problems. The default workspace location for this sample is:

studio-workspace/sample_adapter_embedded_websocketclient

See Default Installation Directories for the location of studio-workspace on your system.

In the default TIBCO StreamBase installation, this sample's files are initially installed in:

streambase-install-dir/sample/adapter/embedded/websocketclient

See Default Installation Directories for the default location of studio-workspace on your system.