add chapter "IPA Client for Testing VPR Server Mode Functionality" to a server_mode/index.rst

doc/src/vpr/command_line_usage.rst

@@ -1879,6 +1879,8 @@ The following options are used to enable server mode in VPR.
 
     **Default:** ``60555``
 
+.. seealso:: :ref:`interactive_path_analysis_client`
+
 Command-line Auto Completion
 ----------------------------
 

doc/src/vtr/server_mode/index.rst

@@ -202,7 +202,19 @@ Draw selected critical path elements example
 
   .. note:: If status is not 1, the field ***DATA*** contains error string.
 
+`The interactive path analysis (IPA) client <https://github.com/w0lek/IPAClient>`_ is useful for viewing timing paths, and to test VPR's server mode functionality.
 
+.. _interactive_path_analysis_client:
+
+Interactive Path Analysis Client (IPA)
+====================================================
+
+The interactive path analysis (IPA) client connects to VPR's server mode and allows interactive visualization of timing paths and their placement and routing. This client application is called **IPAClient** and can also be used to test VPR's server mode functionality. It is available in a public Git repository:  
+`https://github.com/w0lek/IPAClient <https://github.com/w0lek/IPAClient>`_.
+
+This UI application is designed to generate requests for VPR in server mode and display the responses in a readable format, acting as a result viewer.
+
+More details on how to build and use **IPAClient** can be found in the `README <https://github.com/w0lek/IPAClient/blob/main/README.md>`_.