[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Antoine Pitrou pit...@free.fr added the comment: This is not a bug. With a non-blocking socket, the handshake itself is non-blocking, so you have to be prepared to retry. Your snippet also fails under Python 2.6 for me, so this isn't a regression either. If you want to know how to do a

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Jesús Cea Avión j...@jcea.es added the comment: I am not getting the error in the handshake. I am getting it when transfering data, after a few Kbytes are already transfered. This code has been working for the last 8 years, including 2.7.1. It is failing now, under 2.7.2. OpenSSL version

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Jesús Cea Avión j...@jcea.es added the comment: I am talking about the code in production, not the code I pasted yesterday. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12343 ___

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Antoine Pitrou pit...@free.fr added the comment: I am not getting the error in the handshake. I am getting it when transfering data, after a few Kbytes are already transfered. Your traceback (and mine as well) occurs in wrap_socket() which itself calls do_handshake(). I don't understand how

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Antoine Pitrou pit...@free.fr added the comment: Ah, ok, looks like your messages crossed each other. Can you try to devise another test case, then? Or, at least, explain the context and how and where it fails? -- ___ Python tracker

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Jesús Cea Avión j...@jcea.es added the comment: Protecting my reads retrying when getting this exception does the trick, but now my code is convoluted and never before I had to manage this directly. This worked fine in 2.7.1. Previously Python seemed to do the retry itself. --

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Antoine Pitrou pit...@free.fr added the comment: Note: the only significant changes in the ssl module on branch 2.7 have been 742d73a99425 and 7f99ac53014a. Protecting my reads retrying when getting this exception does the trick, but now my code is convoluted and never before I had to manage

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Jesús Cea Avión j...@jcea.es added the comment: I have write a testcase, but adding a small delay between reads, allowing more data coming from the server, solves the issue, so this seems to be a race condition. Trying with a remote slow SSL server, I get the same error in python 2.6, so I

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

STINNER Victor victor.stin...@haypocalc.com added the comment: It's maybe because Python 2.7.2 is faster/slower? :-) -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12343 ___

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Jesús Cea Avión j...@jcea.es added the comment: Antoine, now I am worried about writes, since my usual aproach would be something like this: select says that it is Ok to try to write buf = buf[socket.send(buf):] If now I can get a retry while writing, what is the logic?. Does Python retry

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

Antoine Pitrou pit...@free.fr added the comment: If now I can get a retry while writing, what is the logic?. Does Python retry automatically, internally?. No, Python doesn't retry automatically. You have to call send() again with the same buffer. (if Python retried, it would make

[issue12343] Python 2.7.2 regression: ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read)

New submission from Jesús Cea Avión j...@jcea.es: Combining non-blocking SSL sockets and select() raises ssl.SSLError: [Errno 2] _ssl.c:503: The operation did not complete (read) in Python 2.7.2, but works OK in 2.7.1, 2.6.* and previous. This test shows the issue: import ssl import socket