Home > Error Code > Socket Error Code Eagain

Socket Error Code Eagain


See recvmmsg(2) for information about a Linux-specific system call that can be used to receive multiple datagrams in a single call. This change could cause incompatibility problems in code that's been compiled with the old value of EALREADY. See Job Control, for information on process groups and these signals. Macro: int ENOTDIR A file that isn’t a directory was specified when a directory is required. weblink

select(max_descriptor+1, &read_flags,&write_flags,(fd_set*)0,&wait_time); ...... The Following User Says Thank You to ygemici For This Useful Post: mr_deb(10-26-2010) ygemici View Public Profile Find all posts by ygemici

#4 Macro: int ENOEXEC Invalid executable file format. See cmsg(3) and ip(7) for more information. Excluding enclosed delimiters with cut How can I display the Discount Value onSale of Products Trick or Treat polyglot Is Esperanto likely to survive in future? go to this web-site

Linux Kernel Error Codes

Macro: int ENXIO No such device or address. Of the following list, symbols that are not used on the current platform are not defined by the module. All three routines return the length of the message on successful completion. Perhaps it is the timeout triggering. –Evan Teran Apr 9 '09 at 18:26 add a comment| up vote 1 down vote Is it possible that you're using MSG_DONTWAIT is being specified

  1. What would cause it to happen for a blocking socket?
  2. share|improve this answer answered Oct 21 '10 at 17:02 Eric Towers 3,268815 add a comment| up vote 2 down vote EAGAIN is usually returned when there is no outbound buffer space
  3. In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms
  4. Macro: int ETIMEDOUT A socket operation with a specified timeout received no response during the timeout period.
  5. The select(2) call may be used to determine when it is possible to send more data.
  6. There's no need to wake up periodically and check for data to read, because that's the whole point of select(): telling you when there is data to read...
  7. Examples: /* * The following program makes an illegal call * to the write() function, then prints the * value held in errno. */ #include #include #include #include
  8. Macro: int EINVAL Invalid argument.
  9. errno is thread-local; setting it in one thread does not affect its value in any other thread.

In order to allow applications to safely make the transition to the new value, we've modified to define a number of new symbolic values: EALREADY_OLD The old value (16). To understand the nature of the error these codes need to be interpreted. The argument addrlen is a value-result argument, which the caller should initialize before the call to the size of the buffer associated with src_addr, and modified on return to indicate the C Programming Error Codes fork can return this error.

After an error has been passed, the pending socket error is regenerated based on the next queued error and will be passed on the next socket operation. errno is defined by the ISO C standard to be a modifiable lvalue of type int, and must not be explicitly declared; errno may be a macro. Otherwise, you're at TCP/IP's mercy, and may find yourself blocked literally forever... (Consider the situation of the peer machine crashing while you're blocking waiting to read some data from it... http://stackoverflow.com/questions/735249/blocking-socket-returns-eagain In non-blocking mode it would return EAGAIN in this case.

POSIX.1-2001 allows either error to be returned for this case, and does not require these constants to have the same value, so a portable application should check for both possibilities. Eintr Errno See Socket Options. When recvmsg() is called, msg_controllen should contain the length of the available buffer in msg_control; upon return from a successful call it will contain the length of the control message sequence. in an active directory domain name splitting a file with lines separated by tabs into two files Do Germans use “Okay” or “OK” to agree to a request or confirm that

Linux Errno Example

Macro: int EMSGSIZE The size of a message sent on a socket was larger than the supported maximum size. For error receives, the MSG_ERRQUEUE is set in the msghdr. Linux Kernel Error Codes Not the answer you're looking for? Posix Error Codes The return value will be 0 when the peer has performed an orderly shutdown.

The recv() call is normally used only on a connected socket (see connect(2)) and is identical to recvfrom() with a NULL src_addr argument. http://phabletkeyboards.com/error-code/socket-error-code-linux.php Macro: int ENOENT No such file or directory. POSIX.1-2001 only describes the MSG_OOB, MSG_PEEK, and MSG_WAITALL flags. struct timeval { int wait_time.tv_sec; int wait_time.tv_usec; }; ............ Eintr Error

The flags argument to a recv() call is formed by ORing one or more of the following values: MSG_CMSG_CLOEXEC (recvmsg() only; since Linux 2.6.23) Set the close-on-exec flag for the file How come Ferengi starships work? In many cases, you can do this by adding -DEALREADY=EALREADY_DYNAMIC to the compiler flags. check over here Some of these are marked POSIX.1, indicating that the name is defined by POSIX.1-2001, or C99, indicating that the name is defined by C99.

No ESTALE 122 Potentially recoverable I/O error Yes ESTRPIPE 92 If pipe/FIFO, don't sleep in stream head No ETIME 62 Timer expired Yes ETIMEDOUT 260 Connection timed out Yes ETOOMANYREFS 259 Enosys Error Note: In QNX Neutrino 6.4.0, EALREADY was defined as EALREADY_OLD; in QNX Neutrino 6.6.0, it's defined as EALREADY_NEW. Navigation index modules | next | previous | Python » 2.7.12 Documentation » The Python Standard Library » 15.

A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. 2016-03-15 ERRNO(3) Copyright and license for this manual page HTML

You get this error when you try to transmit data over a socket, without first specifying a destination for the data. 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. Last updated on Sep 20, 2016. Eintr Signal Macro: int EDOM Domain error; used by mathematical functions when an argument value does not fall into the domain over which the function is defined.

the EAGAIN's happen way more often than once every 30 secs. How to handle unintentional innuendos What is a EH-Number™ Word/expression for a German "Ausflugscafé" - a cafe mainly catering to people taking a walk My boss is hiring, but won't give Macro: int EINPROGRESS An operation that cannot complete immediately was initiated on an object that has non-blocking mode selected. this content Macro: int EISDIR File is a directory; you cannot open a directory for writing, or create or remove hard links to it.

Hosting by jambit GmbH. Macro: int ENOSPC No space left on device; write operation on a file failed because the disk is full. See Creating a Socket. Often using a debugger to run a program is considered having it open for writing and will cause this error. (The name stands for “text file busy”.) This is not an

Why don't miners get boiled to death at 4km deep? Macro: int ENOMEM No memory available. You can use the -e option to procnto to specify the value of EALREADY_DYNAMIC: -eo Use the old value, which is the same as that of EBUSY. -en Use the POSIX-compliant Is it OK to use local.

The man page says EAGAIN will occur if no data is available and this flag is specified. All the error names specified by POSIX.1 must have distinct values, with the exception of EAGAIN and EWOULDBLOCK, which may be the same. Macro: int ECONNABORTED A network connection was aborted locally. Some of these error codes can’t occur on GNU systems, but they can occur using the GNU C Library on other systems.

Typically, this error occurs when you are trying to delete a directory. MSG_OOB This flag requests receipt of out-of-band data that would not be received in the normal data stream. EBADF The argument sockfd is an invalid descriptor. CORRECTION my debugging was flawed, EAGAIN's don't happen as often as I thought they did.

Macro: int EISCONN You tried to connect a socket that is already connected. Macro: int EPROCLIM This means that the per-user limit on new process would be exceeded by an attempted fork. If yes then after how much time should I try again. I'm sorry for disturbing you.".