What is the trace utility used for?

Using the SOAP Trace Utility

The Microsoft Simple Object Access Protocol (SOAP) Toolkit 2.0 includes a TCP/IP trace utility, MSSOAPT.EXE. You use this trace utility to view the SOAP messages sent by HTTP between a SOAP client and a service on a server. In order to use the Trace Utility, perform the following steps on the server. Open the Web Services Description Language (WSDL) file.

1) In the WSDL file, locate the <soap:address> element that corresponds to the service and change the location attribute for this element to port 8080.

For example, change

<http://MyServer/VDir/Service.wsdl>

to

<http://MyServer:8080/VDir/Service.wsdl>

.

2) Run MSSOAPT.exe.

3) File menu, New, Click "Formatted Trace" (if you don't want to see HTTP headers) or click Unformatted Trace (if you want to see HTTP headers). 4) In the Trace Setup dialog box, click OK to accept the default values.

Using the Trace Utility on Client

To see all send/receive messages from a service, do the following steps on the client.

1) Copy the WSDL file from the server to the client.

2) Modify location attribute of the <soap:address> element in the local copy of the WSDL document to direct the client to

localhost:8080

Make a note of the current host and port.

For example, Change

<http://MyServer/VDir/Service.wsdl>

to

<http://localhost:8080/VDir/Service.wsdl>

and make note of "MyServer". 3) On the client, run MSSOPT.exe.

4) File menu, New, and either click Formatted Trace (if you don't want to see HTTP headers) or click Unformatted Trace (if you do want to see HTTP headers).

5) In the Destination host box, enter the host specified in Step 2.

6) In the Destination port box, enter the port specified in Step 2.

7) Click OK.

Written by Sandeep Mogulla, Webmaster at www.startvbdotnet.com

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