Forum Discussion

George_Dimitria's avatar
George_Dimitria
Icon for Nimbostratus rankNimbostratus
Jan 12, 2006

Expect: 100-continue header and Big-IP 100 responses

Is it possible for Big-IP (v.9.1.1) to supply the 100-continue header when it reeives a "Expect: 100-continue" header from a client (RFC2616) ?     We've tried something like this:     if ...
application delivery
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bl0ndie_127134's avatar
bl0ndie_127134
Historic F5 Account
Jan 12, 2006
Yes, the respond rule makes BigIP act as the web server so the requests does not get sent to the back end server. Try this version of the rule instead.

Just keep in mind that we have seen servers that send unsolicited '100' responses.


if {([HTTP::method] == “POST”) && [HTTP::header exists "Expect"] } {
   HTTP::header remove "Expect"
   TCP::respond “HTTP/1.1 100 Continue\r\n\r\n”
}