WCF: How do I trace message bodies?
logging, trace, wcf
Solution
Try to add:
<endToEndTracing propagateActivity="true" activityTracing="true" messageFlowTracing="true" />
in your `diagnostics` node, under `messageLogging`.
Problem
I'm trying to diagnose a WCF service that is self-hosted in a relatively simple service host process (Service.exe). I have Service.exe.config configured thus: ``` <?xml version="1.0" ?> <configuration> <system.diagnostics> <sources> <source name="System.ServiceModel" switchValue="All" propagateActivity="true"> <listeners> <add name="traceListener" type="System.Diagnostics.XmlWriterTraceListener" initializeData= "c:\temp\Service.svclog" /> </listeners> </source> </sources> </system.diagnostics> <system.serviceModel> <diagnostics> <messageLogging maxMessagesToLog="1" maxSizeOfMessageToLog="2147483647" logEntireMessage="true" logMessagesAtServiceLevel="true" logMalformedMessages="true" logMessagesAtTransportLevel="true"> </messageLogging> </diagnostics> </system.serviceModel> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0" /> </startup> </configuration> ``` When I look at the resulting svclog file, I see many trace events being logged (I expected only the first message to be logged), and none of the messages being traced show a message body (only headers). I'm sure I must be missing something simple here, but I don't see it. UPDATE: When I look at the WCF Config Editor, there are two sections under "Diagnostics": MessageLogging and Tracing. When I click the "EnableMessageLogging" link, my config file gets updated: ``` <system.diagnostics> <sources> <source propagateActivity="true" name="System.ServiceModel" switchValue="All"> <listeners> <add type="System.Diagnostics.DefaultTraceListener" name="Default"> <filter type="" /> </add> <add initializeData="c:\temp\MessageBodyTracing.svclog" type="System.Diagnostics.XmlWriterTraceListener" name="traceListener"> <filter type="" /> </add> </listeners> </source> <source name="System.ServiceModel.MessageLogging" switchValue="Warning, ActivityTracing"> <listeners> <add type="System.Diagnostics.DefaultTraceListener" name="Default"> <filter type="" /> </add> <add name="ServiceModelMessageLoggingListener"> <filter type="" /> </add> </listeners> </source> </sources> <sharedListeners> <add initializeData="c:\users\me\documents\visual studio 2010\projects\messagebodytracing\messagebodytracing\app_messages.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelMessageLoggingListener" traceOutputOptions="Timestamp"> <filter type="" /> </add> </sharedListeners> </system.diagnostics> ``` I guess the source named System.ServiceModel.MessageLogging is the key - I hadn't seen that in any documentation of message tracing...