It is possible to extend the tracing that is provided by the ServiceModel by creating user-defined activity traces. User-defined activity tracing allows the user to create trace activities to:. For more information about user-defined activity trace, please see the Extending Tracing sample. Message logging can be enabled both on the client and service of any WCF application.
To enable message logging, you must add the following code to either the client or service:. When a message is recorded, the trace type depends on whether it is being traced at the client or the server. For example, an "Add" message that is sent to a client is traced under the "TransportWrite" category at the client, whereas the same message is traced under the "TransportRead" category at the service.
Configure the trace listener by adding the following code to the System. Diagnostics section of the client's App. Trace files are not created without initially creating the log directory. See the initial setup instructions at the end of this document for more information. For more information about message logging, see the Configuring Message Logging topic. The name of this directory is defined in the configuration file as the path for the traces and messages to be logged and can be changed.
After establishing a connection, the client can send an HTTP request message to the server:. The server then processes the request and sends an HTTP response back to the client. The response contains a status code that indicates the status of the request:.
In the example above, the server returned a status code of This is the standard success code for HTTP. HTTP is synchronous and widely used.
The Content-Length header for a SOAP request and response specifies the number of bytes in the body of the request or response. In the example below, a GetStockPrice request is sent to a server.
The request has a StockName parameter, and a Price parameter that will be returned in the response. We just launched W3Schools videos. Get certified by completing a course today! If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. Message information goes here Report Error. If so, than how? If you are using javax. You can provide a FileOutputStream to output the soap message in the file.
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