Contents
The TIBCO StreamBase® Bidirectional BLOB Socket Reader and Writer Adapters can be used to send and receive data over a socket connection in BLOB format. This example shows how linked socket readers/writers work as both client and server. The example also shows how two different data transformers work (Serialized Tuple and BLOB).
The client in this example connects to the server and then sends an initial tuple of data. When the server receives data from
the client socket, it echoes the tuple directly without modifying it. The client waits, and when it receives a response from
the server it increments an integer in the response tuple by 1 and then sends the tuple back to the server. This handshaking
continues until the parameter ${FinishedValue} is reached.
In StreamBase Studio, import this sample with the following steps:
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From the top-level menu, select >.
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Enter
bidito narrow the list of options. -
Select Bidirectional BLOB socket input/output adapters from the StreamBase Standard Adapters category.
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Click .
StreamBase Studio creates a single project containing the sample files.
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In the Project Explorer view, open the sample you just loaded.
If you see red marks on a project folder, wait a moment for the project to load its features.
If the red marks do not resolve themselves after a minute, select the project, right-click, and select > from the context menu.
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Open the
src/main/eventflow/folder.packageName -
Open the
BLOBServerWithSerializedTupleClient.sbappfile and click the
Run button. This opens the SB Test/Debug perspective and starts the module.
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For the example, in the Manual Input view select the
ControlClientStream, then enterCONNECTinto the command field, then click to send the tuple. -
In the Output Streams view, observe tuples emitted on the
ReadDataServerandReadDataClientoutput streams. -
Select any tuple emitted from either stream and inspect tuple data fields in the Variables view below the output streams to analyze and understand their structure.
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When done, press F9 or click the
Terminate EventFlow Fragment button.
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_bi-directional-blob-socketSee Default Installation Directories for the default location of studio-workspace on your system.