[Paraview] Client-Server Handshake failed

[Utkarsh Ayachit]

Version "3.14.1-1217-g611f58e" incorporates latest VTK changes for
modularization. I am not surprised that has resulted in changes to
vtkSocketCommunicator files and that's what resulting in the version
mismatch. Since current changes in VTK/ParaView master are what would
go to making the next release for ParaView which won't be version
compatible with 3.14.1, at this point we should consider git-master
and 3.14.1 client-server processes are non-compatible. You may either
want to build your Mac binary using the same git version of ParaView
or build ur server binary using 3.14.1 source (tag: v3.14.1).

Utkarsh

On Tue, Jul 17, 2012 at 10:28 AM, Ryan Abernathey
<ryan.abernathey at gmail.com> wrote:
> Hello,
>
> I am trying to establish a connection between my workstation (Mac OS 10.7.4,
> Paraview via binary installer version 3.14.1 64-bit) and a remote server. On
> the server side, I built an mpi-enabled paraview from scratch, following the
> instructions on the wiki, but using the intel compiler (2012.0.032) and the
> SGI MPI library (mpi-sgi/mpt.2.04.10789). This was no small task, but as far
> as I can tell, the build was completely successful. The server version is
> 3.14.1-1217-g611f58e.
>
> The essence of the problem is a "Client/server version hash mismatch" error,
> which paraview suggests is due to mismatched versions. However, my client
> and server versions the same. Below is a detailed description of the
> problem. I have invested a lot of time in this so far and now very
> frustrated to be stuck. I sincerely appreciate any help you can offer.
>
> Best Regards,
> Ryan Abernathey
>
>
>
> DETAILS
>
> The server nodes are behind a front-end node, so I have to use ssh
> tunneling. Following the wiki instructions
> (http://paraview.org/Wiki/Reverse_connection_and_port_forwarding#A_Forward_Connection_Over_an_ssh_Tunnel)
> I am able to establish an ssh tunnel for a forward connection. I have
> verified that the client on my local host is able to open a connection to
> the server. The steps I take are:
> 1) Run an interactive PBS job to to get a compute node.
> 2) Knowing the host name of the compute node, I establish an ssh tunnel from
> my workstation like this:
> [LOCAL_WORKSTATION]$ ssh -v -L 11111:COMPUTE_NODE:22222 FRONT_END_HOST -N
> 3) Then I start the paraview server on the host
> [COMPUTE_NODE]$ mpiexec pvserver --server-port=22222
> 4) Finally, I connect to the server from my workstation using the paraview
> client GUI. The settings are Server Type: Client / Server; Host: localhost;
> Port: 11111.
>
> Since I used a verbose SSH tunnel, I can verify that the tunnel is working:
> debug1: Connection to port 11111 forwarding to COMPUTE_NODE port 22222
> requested.
> debug1: channel 2: new [direct-tcpip]
> debug1: channel 2: free: direct-tcpip: listening port 11111 for r211i0n0
> port 22222, connect from 127.0.0.1 port 58973, nchannels 3
> (I have to admit that I don't understand what the last line means.)
>
> This is where the errors start. On the server side, I see:
> Waiting for client...
> Connection URL: cs://COMPUTE_NODE:22222
> Accepting connection(s): COMPUTE_NODE:22222
> ERROR: In
> /u/rpaberna/paraview/src/ParaView/VTK/Parallel/Core/vtkSocketCommunicator.cxx,
> line 506
> vtkSocketCommunicator (0x1b2d2d0): Client/server version hash mismatch.
>
>
> On the client side, I see:
> ERROR: In
> /Source/ParaView/release/ParaView/VTK/Parallel/vtkSocketCommunicator.cxx,
> line 615
> vtkSocketCommunicator (0x115f85830): Client/server version hash mismatch.
>
>
> ERROR: In
> /Source/ParaView/release/ParaView/ParaViewCore/ClientServerCore/vtkTCPNetworkAccessManager.cxx,
> line 321
> vtkTCPNetworkAccessManager (0x10c655f20): Failed to connect to
> localhost:11111. Client-Server Handshake failed. Please verify that the
> client and server versions are compatible with each other
>
>
> ERROR: In
> /Source/ParaView/release/ParaView/ParaViewCore/ServerManager/vtkSMSessionClient.cxx,
> line 257
> vtkSMSessionClient (0x11650da80): Some error in socket processing.
>
>
> The connection fails.
>
>
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