http - Which browsers send the expect: 100-continue header? -


the http/1.1 spec allows clients send expect: 100-continue header large request payloads (8.2.3 use of 100 (continue) status - hypertext transfer protocol -- http/1.1 - rfc2616).

this pause request after headers have been sent , allow server reject based on headers.

if headers did not indicate bad request (e.g. large content-length), responds 100 continue status line, allowing client proceed. @ point client sends request body.

which browsers support this, , under conditions send expect header?

i know curl every post request. running on time ago.

i tested in conjunction php in "how can stop curl using 100 continue?".


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