CODEWITHSUNDEEP
chttp
the_naive
the_naive

Reputation: 3064

Confusion with the format of the http request header values?

According to rfc2616 in the section 3.11 the format of entity tag is the following:

entity-tag = [ weak ] opaque-tag

weak = "W/"

opaque-tag = quoted-string

And in the examples given for the condition "If-match" in section 14.24 in rfc2616 are the following:

If-Match: "xyzzy"

If-Match: "xyzzy", "r2d2xxxx", "c3piozzzz"

If-Match: *

I'm doing a project in c, where I'll parse the http requests from different clients. The web server is also written c, and from the webserver I can get the request headers and values as const char*and I parse them. But my confusion is that where the value in the header "If-match" will be similar to "xyzzy, r2d2xxxx ,c3piozzzz" or will it be similar to ""xyzzy", "r2d2xxxx", "c3piozzzz""? Do you know which one is right? And will there surely be space between each etags in the If-Match header value if it has a list of entities? I mean will the format be the following type?

If-Match: "one-entity-tag",[space]"second-entity-tag",[space]"third-entity-tag"

There is no description of the format of the If-Match header value if it has a list of etags. rfc2616 only gives an example(which I showed above) of it. Is that example reliable?

Upvotes: 0

Views: 198

Answers (1)

Julian Reschke
Julian Reschke

Reputation: 42065

You can trust the spec and the examples: the double quote is really part of the ETag.

Upvotes: 1

Related Questions