VirtualBox

Ticket #1864 (closed defect: worksforme)

Opened 6 years ago

Last modified 5 years ago

VDRP dropping connections -> Problem with an old SunRay client.

Reported by: jschuck Owned by:
Priority: major Component: RDP
Version: VirtualBox 1.6.2 Keywords:
Cc: Guest type: Windows
Host type: Solaris

Description

Using Solaris x86_64 as host OS.

Using Windows XP Professional as VM OS.

RDP connections from SunRay Windows Connector dropping sporadically with the following message in the VirtualBox log file:

VRDP: TCP server failed to send data to the client!!! Disconnecting the client.

Change History

comment:1 Changed 6 years ago by jschuck

Looks like it is related to both bidirectional clipboard and remote sound. I am able to bring up a session from the SunRay Windows connector for quite some time, however I do still get random crashes. Although, since I turned off bidirectional clipboard support and remote sound forwarding in the VirtualBox setup, it is more stable.

comment:2 follow-up: ↓ 3 Changed 6 years ago by sunlover

What is the bandwidth of the network connection to the VRDP server? How stable is the connection? Does a "ping" report loss of packets? The log statement indicates that the TCPIP 'send' function returned an error, so was unable to send the data.

comment:3 in reply to: ↑ 2 Changed 6 years ago by jschuck

Replying to sunlover:

What is the bandwidth of the network connection to the VRDP server? How stable is the connection? Does a "ping" report loss of packets? The log statement indicates that the TCPIP 'send' function returned an error, so was unable to send the data.

It is on 100Mb/s connection, however I don't think that is the problem. The connection is very stable since it's within the corporate network. Ping does not report any lost packets.

What I think is actually happening is that the SunRay Windows Connector is receiving data from the VRDP server at too fast of a rate (i.e. buffer overflow). I can replicate it easily when using the VRDP and the SunRay Windows Connector. When using Windows Terminal Server or Remote Desktop the problem does not occur with the same scenario.

To overcome the issue I used port forwarding to the Virtual Machine using initially Remote Desktop, and once I saw that it worked, received licenses for Terminal Server and migrated to it instead.

comment:4 Changed 6 years ago by ts@…

we are using lots of sunray clients here too. And its true, the SunRay rdp client ( /opt/SUNuttsc/... ) is very unstable with virtualbox. So we here just use rdesktop, works fine. ( its a blastwave package ).

As innotec now is part of SUN i think this RDP problem surely will be solved in near future ;)

comment:5 Changed 6 years ago by frank

  • Priority changed from blocker to major

So it seems to be a problem with the SunRay client.

comment:6 Changed 5 years ago by sunlover

  • Status changed from new to closed
  • Resolution set to worksforme
  • Summary changed from VDRP dropping connections to VDRP dropping connections -> Problem with an old SunRay client.

This was a problem with the SunRay client. Please use the latest available version of the SunRay client. Also please use the latest VBox version.

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