http-compliance : Message: Re: [http-compliance] How do browsers detect end of response when no Content-Length hea der is present?

http-compliance · discussion about HTTP compliance testing and tests

Yahoo! Groups Tips

Did you know...

Real people. Real stories. See how Yahoo! Groups impacts members worldwide.

Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

Messages Help

Advanced

How do browsers detect end of response when no Content-Length hea d

Message List

Reply | Forward

Message #45 of 117 |

Re: [http-compliance] How do browsers detect end of response when no Content-Length hea der is present?

On Thu, 4 Oct 2001, Karr, David wrote:

> How do browsers figure out a response is "Complete" if the origin server
> doesn't send a "Content-Length" header? What is the normal strategy for
> that? The response could be sent in more than one packet, correct?

RFC 2616 defines browsers behavior in this case. There are several
scenarios like Chunked Encoding and end-of-file/connection detection.
See a lengthy discussion in Section 4.4 of the RFC.
http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.4

Alex.

Thu Oct 4, 2001 7:01 pm

Show Message Option

Alex Rousskov <rousskov@...>

rousskov@...

Send Email

Forward

Message #45 of 117 |

Expand Messages	Author	Sort by Date
How do browsers figure out a response is "Complete" if the origin server doesn't send a "Content-Length" header? What is the normal strategy for that? The...	Karr, David david.karr@...	Oct 4, 2001 6:40 pm
... RFC 2616 defines browsers behavior in this case. There are several scenarios like Chunked Encoding and end-of-file/connection detection. See a lengthy...	Alex Rousskov rousskov@...	Oct 4, 2001 7:01 pm
I started to read that earlier, but I missed the short "closing the connection" point. So, how exactly do you detect the closing of the connection? If you're ...	Karr, David david.karr@...	Oct 4, 2001 7:48 pm
... You wait for the read(2) call on a socket to return zero bytes, indicating an end-of-file condition. Unfortunately, the situation is complicated by...	Alex Rousskov rousskov@...	Oct 4, 2001 8:06 pm
Typically, your select() will return that the socket is readable, and when you read, you will get back 0 bytes. This signals to you that the connection has...	Hu, James jxh@...	Oct 4, 2001 7:52 pm
... ... but only if the error number tells you so. Negative read size may simply mean that select(2) lied and no data is really available yet. This has very...	Alex Rousskov rousskov@...	Oct 4, 2001 8:10 pm
... So after you've finished reading the last real block of data and get back to the "select" loop, the server will have closed the connection. At the ...	Karr, David david.karr@...	Oct 4, 2001 8:10 pm
... Right. There may be some negative-size reads in-between, of course. Select(2) indicates a change in fd "condition", not necessarily a "ready" state. If you...	Alex Rousskov rousskov@...	Oct 4, 2001 8:16 pm
Of course, always check the error number. -- James ... http://docs.yahoo.com/info/terms/ ... To unsubscribe from this group, send an email to: ...	Hu, James jxh@...	Oct 4, 2001 8:31 pm

< Prev Topic | Next Topic >

Advanced

Yahoo! My Yahoo! Mail
	Sign In New User? Sign Up
		Tech - Groups - Help

Yahoo! Groups Tips

Did you know...

Best of Y! Groups

Messages