New submission from Jason Davies <ja...@jasondavies.com>: I came across this bug when trying to use CouchDB-Python to PUT an attachment using HTTP authentication (using the httplib2 library). Essentially what httplib2 does is this:
1. Attempt PUT with no auth credentials 2. If a 401 response is received, try again with credentials However, CouchDB sends a 401 response as soon as it has consumed the request headers, and before the request body has been fully sent by the client. This triggers a bug in both httplib and httplib2, whereby they raise exceptions due to a broken pipe being encountered when trying to finish sending the request body. It seems that Python's httplib checks for broken pipe errors and closes the connection entirely when they occur when making a request. This is unhelpful if a legitimate response was sent and the socket was closed early by the server. The offending try/except handler is in httplib.HttpConnection.send and has a comment saying: # send the data to the server. if we get a broken pipe, then close # the socket. we want to reconnect when somebody tries to send again. This is wrong, as someone might want to read the response before closing the socket. For reference, the CouchDB-Python issue is: http://code.google.com/p/couchdb-python/issues/detail?id=68 This bug may also be related to: http://bugs.python.org/issue3566 ---------- components: Library (Lib) messages: 84000 nosy: jasondavies severity: normal status: open title: Socket is closed prematurely in httplib, if server sends response before request body has been sent versions: Python 2.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5542> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
