Linux Socket Error Resource Temporarily Unavailable
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Socket Error Resource Temporarily Unavailable Python
Sign up What can cause a “Resource temporarily unavailable” on sock send() command up vote 28 down vote favorite 6 What can cause a Resource temporarily unavailable error on a socket send() command? The socket is setup as AF_UNIX, SOCK_STREAM. It works most of the time, but occasionally gets this error. The receiving end of the socket appears to be working properly. errno 11 resource temporarily unavailable python I know this isn't very detailed, but I'm just looking for general ideas. Thanks! c linux sockets unix share|improve this question edited Jan 17 '13 at 9:40 Ashwini Chaudhary 132k20198275 asked Jan 17 '13 at 0:49 giroy 73841634 Is this related? stackoverflow.com/questions/5737493/… –paddy Jan 17 '13 at 0:52 2 Are you setting your socket to O_NONBLOCK ? –Deepankar Bajpeyi Jan 17 '13 at 0:57 I don't think it is related to that post. My sockets are SOCK_STREAM which I believe are blocking which is what I want. –giroy Jan 17 '13 at 0:59 2 Whether a stream is blocking or non-blocking is independent of whether it's SOCK_STREAM or SOCK_DGRAM. The answer there is relevant. –Barmar Jan 17 '13 at 1:33 add a comment| 2 Answers 2 active oldest votes up vote 35 down vote accepted "Resource temporarily unavailable" is the error message corresponding to EAGAIN, which means that the operation would have blocked but nonblocking operation was requested. For send(), that could be due to any of: explicitly marking the file descriptor as nonblocking with fcntl(); or passing
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Resource Temporarily Unavailable Linux
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Resource Temporarily Unavailable Errno 11
Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like http://stackoverflow.com/questions/14370489/what-can-cause-a-resource-temporarily-unavailable-on-sock-send-command you, helping each other. Join them; it only takes a minute: Sign up C Sockets - Errno: 11, Resource Temporarily Unavailable up vote 7 down vote favorite 3 I am using c sockets to implement a reliable UDP protocol. I am using the following code to set a timeout on a socket in which I'm waiting for http://stackoverflow.com/questions/13554691/c-sockets-errno-11-resource-temporarily-unavailable an acknowledgement. I am not sure why I am getting errno 11, resource temporarily unavailable. //set timer for recv_socket struct timeval tv; tv.tv_usec = TIMEOUT_MS; if(setsockopt(rcv_sock, SOL_SOCKET, SO_RCVTIMEO,&tv,sizeof(tv)) < 0){ printf("Error setting the socket timeout.\n"); } int recv_msg_len; if(recv_msg_len = recvfrom(rcv_sock, ackBuffer,sizeof(ackBuffer), 0, (struct sockaddr *) &servAddr2, &fromSize) < 0){ //timeout reached printf("Error Reporting: %d : %s\n", errno, strerror(errno)); num_timeouts++; } I have also tried the select method that was mentioned in the comments. I have the following code inside a loop, but the recvfrom never times out. fd_set set; FD_ZERO(&set); /* empties the set */ FD_CLR(rcv_sock,&set); /* removes FD from the set */ FD_SET(rcv_sock,&set); /* adds FD to the set */ if(select(rcv_sock + 1, &set, NULL, NULL, &tv) < 0){ printf("\nError Reporting: %d : %s\n\n", errno, strerror(errno)); return -1; } if(!FD_ISSET(rcv_sock,&set)){ /* true if FD is in the set */ printf("socket is not set properly.\n"); } c sockets udp share|improve this question edited Nov 25 '12 at 21:58 asked Nov 25 '12 at 19:37 rharrison33 5382927
an error to indicate what went wrong. Its value is significant only when the return value of the call indicated an error (i.e., -1 https://linux.die.net/man/3/errno from most system calls; -1 or NULL from most library functions); a function that succeeds is allowed to change errno. Valid error numbers are all nonzero; errno is never set to zero by any system call or library function. For some system calls and library functions (e.g., getpriority(2)), -1 is a valid return on success. In such cases, a successful return can resource temporarily be distinguished from an error return by setting errno to zero before the call, and then, if the call returns a status that indicates that an error may have occurred, checking to see if errno has a nonzero value. errno is defined by the ISO C standard to be a modifiable lvalue of type int, and must not be explicitly declared; errno resource temporarily unavailable may be a macro. errno is thread-local; setting it in one thread does not affect its value in any other thread. All the error names specified by POSIX.1 must have distinct values, with the exception of EAGAIN and EWOULDBLOCK, which may be the same. Below is a list of the symbolic error names that are defined on Linux. 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. 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 (may be the same value as EWOULDBLOCK) (POSIX.1) EALREADY Connection already in progress (POSIX.1) EBADE Invalid exchange EBADF Bad file descriptor (POSIX.1) EBADFD File descriptor in bad state EBADMSG Bad message (POSIX.1) EBADR Invalid request descriptor EBADRQC Invalid request code EBADSLT Invalid slot EBUSY Device or resource busy (POSIX.1) ECANCELED Operation canceled (POSIX.1) ECHILD No child processes (POSIX.1) ECHRNG Channel number out of range ECOMM Communication error on send ECONNABORTED Conne