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Cannot Set Connection To Nonblocking Mode

There's "is the socket blocking or non-blocking" and "if non-blocking, what is the timeout on the socket". Not the answer you're looking for? offbyone commented Sep 1, 2015 +1 and make sure the message is clear. In the nonblocking state, calls to PQsendQuery, PQputline, PQputnbytes, and PQendcopy will not block but instead return an error if they need to be called again. http://culturahq.com/cannot-set/cannot-set-connection-to-blocking-mode.html

requests collaborator Lukasa commented Jul 14, 2016 You can just to straight to urllib3 with a PR, no need for a new ticket. The function's parameters are handled identically to PQdescribePortal. The same is true of the send() API. It looks like the current development version already has this issue fixed, so I'm marking this bug as Fix Released. http://stackoverflow.com/questions/865017/pg-send-query-cannot-set-connection-to-blocking-mode

int PQsendDescribePrepared(PGconn *conn, const char *stmtName); This is an asynchronous version of PQdescribePrepared: it returns 1 if it was able to dispatch the request, and 0 if not. If the buffer ever gets "full", the system will return the error 'Operation Would Block" the next time you try to write to it. Should I allow my child to make an alternate meal if they do not like anything served at mealtime? After calling PQconsumeInput, the application can check PQisBusy and/or PQnotifies to see if their state has changed.

Normally, this is not a big deal, because we have local database caches which is used as a failsafe solution, and all scripts are programmed in a way to watch out The whole purpose of the two PQ_SETNONBLOCKING calls is to put the connection in non blocking mode to allow asynchronous execution and putting it back to the default blocking behaviour afterwards. libpq - C Library Next 31.4. If only blocking sockets are allowed then you should reject the values that would result in nonblocking (and vice versa).

nateprewitt commented Jul 14, 2016 Ok great! That would be a 3.0.0 change (to raise a ValueError if it isn't None, tuple, int, or float). Due to the large number of connected subscribers and int- exchange links, switching fabrics in telephone exchanges have to serve a great number of input and...https://books.google.gr/books/about/Nonblocking_Electronic_and_Photonic_Swit.html?hl=el&id=QuhFpfFS_T0C&utm_source=gb-gplus-shareNonblocking Electronic and Photonic Switching FabricsĪ— https://bugs.php.net/bug.php?id=65015 int PQsetnonblocking(PGconn *conn, int arg); Sets the state of the connection to nonblocking if arg is 1, or blocking if arg is 0.

If it does, we should consider whether we can police this in the API. As a result, pg_send_query() is too unstable to be used at all if the connection is made to any other host but 'localhost'. This makes me think that maybe you wanted timeout of 0 to work for read. Returns Response object. :param request: The :class:`PreparedRequest ` being sent. :param stream: (optional) Whether to stream the request content. :param timeout: (optional) How long to wait for the server to send

The problem is not the error message, because if something is wrong with the database connection, it is correct to print an error (or to call the error handler). offbyone commented Jul 30, 2015 timeout=None works for the 'set nonblocking' concept better than timeout=False imo requests collaborator shazow commented Jul 30, 2015 Erm I'm thinking of retries=False. Actual data loss depends on PHP application code running on top of the library and may or may not happen in practice. Last updated: Tue Nov 08 07:01:41 2016 UTC php.net| support| documentation| report a bug| advanced search| search howto| statistics| random bug| login go to bug id or search bugs for Bug#31411

requests collaborator Lukasa commented Jul 30, 2015 No rush. =) offbyone commented Jul 30, 2015 socket(PF_NETLINK, SOCK_RAW, 0) = 10 bind(10, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0 getsockname(10, {sa_family=AF_NETLINK, pid=13834, groups=00000000}, this contact form So, to turn on non-blocking mode requires three steps: Call the fcntl() API to retrieve the socket descriptor's current flag settings into a local variable. I think we just explicitly want to forbid True/False, because they happen to be int-y but really shouldn't be. The application might have other work to do (such as maintaining a user interface), in which case it won't want to block waiting for the response.

Repeat until PQflush returns 0. (It is necessary to check for read-ready and drain the input with PQconsumeInput, because the server can block trying to send us data, e.g. TRUE : FALSE); /* early out if the socket is already in the state requested */ if (barg == conn->nonblocking) return 0; /* * to guarantee constancy for flushing/query/result-polling behavior we How to decide between PCA and logistic regression? have a peek here PQsendDescribePortal Submits a request to obtain information about the specified portal, without waiting for completion.

share|improve this answer edited Sep 26 '12 at 9:19 answered Sep 25 '12 at 12:19 J. It's not messing up the page apart from the notice output ; the rest of the SQL in my scripts works just fine. [2005-07-06 13:06 UTC] [email protected] Please try using this Alternatively, we could coerce anything that compares numerically equal to zero to None instead, which makes the concrete assertion that when you said timeout=0 or timeout=False what you meant was "don't

This can be avoided by proper use of two more functions: PQconsumeInput If input is available from the server, consume it.

Try to update PHP to the latest version - maybe this is a bug in PHP and it is already fixed. kolis commented Feb 4, 2016 Sorry, ignore that comment, I wasn't thinking it through properly :) nateprewitt commented Jul 14, 2016 • edited @Lukasa @sigmavirus24 Is this something we still want The PG team have apparently solved this issue, so I've dropped persistence as it was cluttering up my system unnecessarily. When the main loop detects input ready, it should call PQconsumeInput to read the input.

nateprewitt commented Jul 14, 2016 • edited Ok will do, and to make sure before I open this up, urllib3 is not supporting non-blocking requests, correct? By default, TCP sockets are in "blocking" mode. For my end, this is fixed. Check This Out Copyright © 2001-2016 The PHP Group All rights reserved.

this is ok because either they are making a transition _from_ * or _to_ blocking mode, either way we can block them. */ /* if we are going from blocking to For workaround, install PgBouncer and use pg_connect() to connect to localhost PgBouncer instead of connecting to remote server directly. –Mikko Rantalainen Sep 2 '13 at 8:10 @MikkoRantalainen, thanks for The same is true for the write() API, the connect() API, etc. requests collaborator Lukasa commented Jul 30, 2015 @sigmavirus24 Sounds good to me.

Execute bash script from vim Did a thief think he could conceal his identity from security cameras by putting lemon juice on his face? The function's parameters are handled identically to PQexecPrepared. Generally, things that are float-y or int-y should be totally acceptable. PQisnonblocking Returns the blocking status of the database connection.


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