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Re: Protocol error - missed text message!


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  • From: Jason Zurawski <>
  • To:
  • Cc: "" <>
  • Subject: Re: Protocol error - missed text message!
  • Date: Wed, 09 Feb 2011 17:12:18 +0100
  • Organization: Internet2

Hi Matt;

On 2/9/11 12:32 PM,

wrote:
Hi Rich and others,

I just installed NDT

I'm running with:

/usr/local/sbin/fakewww >& /dev/null & /usr/local/sbin/web100srv --ipv4
>& /dev/null & /usr/local/sbin/web100srv --ipv6 >& /dev/null &


I am going to suggest simplifying this a bit, and turning on some logging. Kill any running instances to start. Make sure they exit, and not still listening on any of the sockets. Make a logging directory:

sudo mkdir -p /var/log/ndt

Start web100srv (just do ipv4 for now please):

web100srv -4 -s -l /var/log/ndt/web100srv.log

Finally start fakewww:

fakewww -s -l /var/log/ndt/fakewww_access.log -e /var/log/ndt/fakewww_error.log

Tail the log files to watch connections.


The problem is that I'm getting a protocol error when running the S2C
test (this is from my ubuntu desktop machine):

# sudo web100clt -4 -l -n [NDT hostname]

Testing network path for configuration and performance problems -- Using
IPv4 address

Checking for Middleboxes ****************************** Done

checking for firewalls . . . . . . . . . . . . . . . . . . . Done

running 10s outbound test (client to server) . . . . . Protocol error -
missed text message!

C2S throughput test FAILED!

Protocol error - missed prepare message!

S2C throughput test FAILED!

Protocol error - expected results! got ' 1', msgtype=2


Was the web100clt modified in any way, or is it exactly how it was included in the package?


Testing with my desktop machine that running MS XP , using Firefox to
test , I can load applet all and get no errors but wait for S2C
throughput test for long time ,


If possible, can you try a different browser? Safari for windows, or chrome? See if you can re-produce this with different combinations.

Thanks;

-jason

Still don’t shown the results after C2S test result.

So I am only get the C2S throughput test result , test result shown as
follows :

Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done.

Checking for firewalls . . . . . . . . . . . . . . . . . . . Done.

running 10s outbound test (client-to-server [C2S]) . . . . . 93.14Mb/s

running 10s inbound test (server-to-client [S2C]) . . . . . .

Here are the different versions of things on the server:

ndt 3.6.4

web100_userland-1.7

javac 1.6.0_22

I tried disabling iptables on both the server and the client, but that
does not fix it.

Any help greatly appreciated.

Matt



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