Hi,
it's clear that the request reaches the server without its parameters; You can see that those requests have content-length 0. This is indeed not correct.
I see that there is a X-BlueCoat-Via header in the request, that suggests that the user is behind a
Blue Coat ProxySG, btw I can't assume that the problem lies there.
I put here some questions/ideas that could help nail the issue.
Is the problem appearing regularly?
Which kind of problem is experiencing the client? A colleague of mine suggests that those empty requests could be just "echo" requests and that actual requests could have reach the server before.
Setting LightstreamerLogger.connections.http to DEBUG will make the server log headers of every requests; that way could be possible to check if the refused requests are duplicated requests or not by checking the timestamp in the cookies.
Is it possible that the sysadmins of the network of your client are blocking such requests on purpose?
Is it possible to compare the problematic requests as they exit your client's pc (before the proxy handles the request) with the requests received on the server? This would help understand if it's really the proxy that strips the parameters.
