Error Reading From Socket Resource Temporarily Unavailable
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Socket Error 11 Resource Temporarily Unavailable
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Recv Failed Resource Temporarily Unavailable
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, socket error resource temporarily unavailable python just like you, helping each other. Join them; it only takes a minute: Sign up Reading socket: EAGAIN: Resource temporarily unavailable up vote 2 down vote favorite 1 I have created a socket in C++ and I needed it to have certain connection timeout. So that's what is happening: Create socket Make it NON_BLOCKING Call socket error errno 11 resource temporarily unavailable connect It returns -1 and errno EINPROGRESS as expected Call select Returns >0, so connection has been made Make the socket BLOCKING again Code for this part is the following: bool mastControl::prepareSocket(char * address, int port, int * sockfd) { struct sockaddr_in serv_addr; struct timeval timeout = {0,100000}; struct timeval connTimeout; struct hostent * server = NULL; fd_set socketSet; socklen_t lon; int sockOpt = 0; long socketFlags = 0; int buffersize = 8; int res = 0; int connectReturn = 0; const int WAIT_TO_RECONN = 15; server = gethostbyname(address); *sockfd = socket(AF_INET, SOCK_STREAM, 0); if (*sockfd < 0) { qDebug()<<"Impossible to open socket: "<
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Linux Socket Resource Temporarily Unavailable
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Resource Temporarily Unavailable Recvfrom
4.7 million programmers, just like 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 http://stackoverflow.com/questions/10318191/reading-socket-eagain-resource-temporarily-unavailable 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 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 http://stackoverflow.com/questions/13554691/c-sockets-errno-11-resource-temporarily-unavailable *) &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 5332927 Try using the select() and non-blocking sockets instead. The select() approach is much more flexible, reliable and portable. –Michael Sh Nov 25 '12 at 21:51 There is no call to recvfrom() int he second snippet. –alk Nov 26 '12 at 11:09 add a comment| 2 Answers 2 active oldest votes up vote 9 down vote accepted When calling recvfrom() on a blocking socket and a time out had been set using setsockopt() it is normal to get the error EAGAIN (11) in case the call to recvfrom()
Post reply #1 2010-03-02 12:08 PM kavinsivakumar Member Registered: 2010-03-02 Posts: 7 Re: Resource temporarily unavailable Error In Socket Hi, Now I am programming to communicate with some network printer through TCP Socket program.By http://developerweb.net/viewtopic.php?id=6513 sending command "\033E 1\r" to printer,causes, check the port for error normally. In my https://www.quora.com/What-is-the-cause-of-the-resource-temporarily-unavailable-error-when-creating-a-socket-within-a-thread-in-GTK case i used following code bytesSent = send( sockfd, "\033E 1\r",sizeof("\033E 1\r"), 0); bytesRecv = recv( sockfd,recvbuf, 1024, 0 ); Here command goes to printer proper manner.But when i try to receive the recv gets blocking can not able to read anything its hanging there. Then i used Non Blocking Socket with select() method in resource temporarily this case i am getting "Resource temporarily unavailable". Please help me to figure out this error Thanks in Advance Regards Siva Offline Quote #2 2010-03-02 01:21 PM i3839 Oddministrator From: Amsterdam Registered: 2003-06-07 Posts: 2,229 Re: Resource temporarily unavailable Error In Socket When you do a read on a socket and there's nothing to read then this happens: 1) If you are using blocking sockets, the read call will block until resource temporarily unavailable data arrives. 2) If using non-blocking sockets, the read won't block, but return with an error EAGAIN/EWOULDBLOCK, which means there's nothing to read. So your real problem is the printer not sending you any data at all. The "error" is not a real error, but a way to tell you what you already knew: That there is (yet) nothing to read. If I had to guess the printer either expects you to send something else or more, or it behaves as printers do and just stopped working for no apparent reason. Offline Quote #3 2010-03-02 01:36 PM kavinsivakumar Member Registered: 2010-03-02 Posts: 7 Re: Resource temporarily unavailable Error In Socket Thanks to reply to me, But in printer port have some error.I comes to know through the LCD display of Printer.Even same thing i applied in USB Printer it gives the error report.In network printer i cant able to read even port has error. Offline Quote #4 2010-03-02 02:59 PM i3839 Oddministrator From: Amsterdam Registered: 2003-06-07 Posts: 2,229 Re: Resource temporarily unavailable Error In Socket Are you trying to print out a "1"? If not, try removing the space.I'd make sure the command you're sending is correct, and to reset theprinter before sen
the cause of the "resource temporarily unavailable" error when creating a socket within a thread in GTK?UpdateCancelPromoted by Metavision.comStay on top of the latest augmented reality (AR) happeningsPokémon GO barely touched on AR's potential. Read these AR-related sites to keep up with the industryLearn More at Metavision.comAnswer Wiki1 Answer Neeraj Sinha, Linuxer since a decade.Written 122w agoIt is because either recvfrom or sendto got errored out with EAGAIN. I am quoting an answer from StackOverflow:"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(); orpassing the MSG_DONTWAIT flag to send(); orsetting a send timeout with the SO_SNDTIMEO socket option.813 Views · View UpvotesView More AnswersRelated QuestionsIs it ok to create a thread for each client connected to the socket server on c++?Is it okay to create a boost thread from within a pthread? In general is it okay to mix threading libraries?How is a socket created?What are good ways to create a gnome/GTK theme?If the kernel [migration] thread take extensive CPU resources (cause high load average) on a NUMA architecture, what kind of tunings are avail...In Java's concurrency documentation on joins, it says "The join method allows one thread to wait for the completion of another. If t is a Thre...What are the best resources about Java sockets programming?What are some good online resources to learn about sockets and socket programming?What are some good resources (book or tutorials) to learn GTK 3?What are the most powerful socket and threading/concurrency APIs/Library for C++?What are the best resources to learn Web-Sockets?What are the advantages & disadvantages of creating & destroying threads at run-time compared to creating a pool of threads once?Is there a way to serve multiple clients without non-blocking sockets or threading?Is a cooperative thread array (thread block) different from blocks within a grid in CUDA?Threads share code. Can this cause performance degradation?How can I create a thread in unix?How do you handle a socket hang