Hi,

I'm the author of milton.io, a webdav server library.

Many webdav clients use the Expect header with value of Continue, for the purpose of validating authorisation, and if necessary challenging for a login, prior to uploading files. Unfortunately tomcat sends the 100 Continue response (so the client continues the upload) before invoking the servlet so the semantics of that header are broken, and any possible benefit is lost.

I found this discussion from some years ago:
http://mail-archives.apache.org/mod_mbox/tomcat-users/200609.mbox/%3cc7eb567e0609050746m296ecf19jce1d3dbf54aa0...@mail.gmail.com%3E

With this as the conclusion by Bill Barker
"it's not a parameter, and never will be. Sending "100 Continue" is required
by the HTTP/1.1 RFC, so Tomcat does that."

Has there been any progress with this? Can anyone suggest a way to disable this "feature" short of hacking tomcat?

Thanks,
Brad

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