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the packets size is small. –pendrive Nov 3 '13 at 17:37 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote I have gotten the same problem How to empty the variable buffer in recv() before accepting a string. Some functions that must always block (such as connect; see Connecting) never return EAGAIN. However, then it again goes for recv, and this time it receives nothing returns -1 and when printed the errno it prints 35 (which is EAGAIN). http://whistlemedia.net/socket-error/socket-error-wsaewouldblock-the-socket-would-block.html

Macro: int ERESTART Macro: int ECHRNG Macro: int EL2NSYNC Macro: int EL3HLT Macro: int EL3RST Macro: int ELNRNG Macro: int EUNATCH Macro: int ENOCSI Macro: int EL2HLT Macro: int EBADE Macro: I tested this case. What does "put on one's hat" mean? Though this way you have less control about how long you wait. a fantastic read

Socket Read Eagain

See Sockets. P: 2 cgillopez Hello, I implented a socket client to communicate to an ip camera with RTSP over HTTP to get teh video from the camera. I'm definitely expecting data (according to my protocol) so it's probably just a brief network delay. C libraries in many older Unix systems have EWOULDBLOCK as a separate error code.

Unable to complete a task at work. Join them; it only takes a minute: Sign up write always returns EAGAIN for connected nonblock socket after a while up vote 1 down vote favorite 1 I'm writing a client struct timeval { int wait_time.tv_sec; int wait_time.tv_usec; }; ............ Msg_dontwait Sambit.

I already posted an answer about that but sounds did not fill up the rules of stackoverflow and have been deleted –pendrive Jul 4 '14 at 13:04 add a comment| Your Eagain Socket Send Attempts to manipulate the object before the call completes return EALREADY. wait_time.tv_sec = 30; /* "wait_time.tv_sec = 1 * 60; " change try to one minute */ wait_time.tv_usec = 0; ..... c++ c linux sockets share|improve this question edited Feb 1 '15 at 12:02 Barracuda 1,142827 asked Apr 9 '09 at 17:51 Evan Teran 55.8k17141202 add a comment| 4 Answers 4 active

On GNU/Hurd systems, this error can happen for many calls when the object does not support the particular operation; it is a generic indication that the server knows nothing to do Errno 11 E2BIG Argument list too long (POSIX.1) EACCES Permission denied (POSIX.1) EADDRINUSE Address already in use (POSIX.1) EADDRNOTAVAIL Address not available (POSIX.1) EAFNOSUPPORT Address family not supported (POSIX.1) EAGAIN Resource temporarily unavailable share|improve this answer edited Feb 1 '15 at 12:03 Barracuda 1,142827 answered Oct 21 '14 at 19:02 Edward Alberts 1 add a comment| Your Answer draft saved draft discarded Sign cristina Jan 24 '11 #1 Post Reply Share this Question 3 Replies Expert Mod 5K+ P: 8,916 Banfa EAGAIN basically just means that there was nothing to read at that time

  • Macro: int EINTR Interrupted function call; an asynchronous signal occurred and prevented completion of the call.
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  • For example, if you try to delete a file that is the root of a currently mounted filesystem, you get this error.
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  • This happens only on MAC OS Lion operating system, for other OS this runs perfectly fine do{ rc = recv(i, buffer, sizeof(buffer), 0); if (rc < 0){ printf("err code %d", errno);
  • I double checked the code again and again and tried to debug it many times and could not see anything wrong.

Eagain Socket Send

Index »Networking »Strategy for EAGAIN on non-blocking sockets Pages: 1 Post reply #1 2005-12-14 07:27 PM duncang Member From: UK Registered: 2004-04-30 Posts: 30 Re: Strategy for EAGAIN on non-blocking sockets Can I do anything to avoid it? Socket Read Eagain How to decrypt .lock files from ransomeware on Windows How secure is a fingerprint sensor versus a standard password? Send Eagain Macro: int EBADF Bad file descriptor; for example, I/O on a descriptor that has been closed or reading from a descriptor open only for writing (or vice versa).

This condition never arises on GNU/Hurd systems. http://whistlemedia.net/socket-error/socket-error-10057-â-socket-is-not-connected.html Just use strerror(3) to figure out the actual issue. help kkc Shell Programming and Scripting 2 10-16-2007 12:11 PM Sending Error msg from HP-UX to E-mail address cgege HP-UX 1 08-05-2004 07:41 AM All times are GMT -4. See Job Control, for information on process groups and these signals. Eagain Value

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the See Creating a Socket. Instead, they return EINPROGRESS to indicate that the operation has begun and will take some time. this contact form Macro: int EREMOTE An attempt was made to NFS-mount a remote file system with a file name that already specifies an NFS-mounted file. (This is an error on some operating systems,

For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Errno Values Should a country name in a country selection list be the country's local name? Macro: int ENODEV The wrong type of device was given to a function that expects a particular sort of device.

It indicates that the shortage is expected to pass, so your program can try the call again later and it may succeed.

Macro: int ECONNRESET A network connection was closed for reasons outside the control of the local host, such as by the remote machine rebooting or an unrecoverable protocol violation. I check with wireshar that the DESCRIBE OK response is sent from the camera, but the recv never gets it. errno is always EAGAIN after calling recvfrom2recv with non-blocking socket6connect() returns “Operation now in progress” on blocking socket?11When a non-blocking send() only transfers partial data, can we assume it would return Recv At the moment, my code to deal with it looks something like this (I have it throw an exception on error, but beyond that it is a very simple wrapper around

Pretty much constatnly. –Evan Teran Apr 9 '09 at 18:24 CORRECTION my debugging was flawed, EAGAIN's don't happen as often as I thought they did. In GNU, this error is always synonymous with ENOMEM; you may get one or the other from network operations. linux socket io share|improve this question asked Apr 3 '12 at 8:35 EdNdee 10813 Can you clarify exactly what's happening? navigate here Binary to decimal converter Why does MIT have a /8 IPv4 block?

This error means you got lucky and the system noticed; it might just hang. Is there any financial benefit to being paid bi-weekly over monthly? It will not work with modern versions of the C library.