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.

Importing This Sample into StreamBase Studio

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

  • From the top-level menu, select FileLoad StreamBase Sample.

  • Type websocketclient to narrow the list of options.

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

  • Click OK.

StreamBase Studio creates a project for the sample.

Running WebSocketClient.sbapp in StreamBase Studio

  1. In the Project Explorer, open the sample you just loaded.

  2. Open the src/main/eventflow folder.

  3. Open the package folder (most samples contain a single package folder. Open the top-level package folder if your sample contains more than one folder).

  4. Open the named application file and click the Run button. This opens the SB Test/Debug perspective and starts the application.

    If you see red marks, wait a moment for the project in Studio to load its features.

    If red marks do not resolve themselves in a moment, select the project and right-click MavenUpdate Project from the context menu.

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

  6. 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. This indicates that the WebSocket Client Write adapter successfully wrote data to the server.

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

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 default location of studio-workspace on your system.