Right on ! May I ask a silly question? Why would you do such a weird thing in the first place? (maybe we should have started from there) :)
Frédéric Giudicelli http://www.newpki.org ----- Original Message ----- From: "Olia Kerzhner" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, January 06, 2004 1:18 AM Subject: Re: OpenSSL: threading question > Ok, I think we're on the same page now. With > Stephen's explanation and your last remark it clicked > into place. Can't read from 2 threads at the same > time, and SSL doesn't implement locking for it, so > can't call SSL_Read and SSL_Write at the same time. > > Thanks, and sorry for not being quicker on the uptake! > --- Frédéric_Giudicelli <[EMAIL PROTECTED]> wrote: > > ----- Original Message ----- > > From: "Olia Kerzhner" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Tuesday, January 06, 2004 12:16 AM > > Subject: Re: OpenSSL: threading question > > > > > > > > > Do you agree that read/write from 2 different > > > > threads > > > > > is acceptable with plain SOCKETs? > > > > It works on writes, not on reads. > > > > Do the test, you will see. The behavior is > > > > unpredictable on blocking and > > > > non-blocking sockets. > > > > It might work 99,9% of the time, it one threads > > > > picks up the datas before > > > > the other, in some cases you might end up with a > > > > dead-lock. > > > > Plus on writes, don't forget the Nagle > > algorithm, > > > > you might have some weird > > > > stuff happening. > > > > > > > > > > Are you talking about 2 threads, when one only > > reads, > > > and another only writes? I know you can't have 2 > > > threads reading at the same time, or writing at > > the > > > same time. > > Ok, you should have mentionned that since the > > beginning :) > > All Stephen and I were trying to tell you, was that > > in some cases using > > SSL_read and SSL_write, you could end up having two > > threads reading from the > > same SOCKET. > > > > That's why I preconized some subclassing to > > "protect" the access to SSL_read > > and SSL_write. > > > > Fred. > > > > > ______________________________________________________________________ > > OpenSSL Project > > http://www.openssl.org > > User Support Mailing List > > [EMAIL PROTECTED] > > Automated List Manager > [EMAIL PROTECTED] > > > __________________________________ > Do you Yahoo!? > Find out what made the Top Yahoo! Searches of 2003 > http://search.yahoo.com/top2003 > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List [EMAIL PROTECTED] > Automated List Manager [EMAIL PROTECTED] > ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
