Recvfrom Error 11 Resource Temporarily Unavailable
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Resource Temporarily Unavailable Socket Recv
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Socket Error Resource Temporarily Unavailable Python
like you, helping each other. Join them; it only takes a minute: Sign up UDP and sockets, recvfrom() returning -1 and resource temporarily unavailable up vote 7 down vote favorite 1 I'm pretty new at programming and errno 11 resource temporarily unavailable python esp network programming so if it's stupid, don't bash too hard please, thanks. I have client and server communicating with diagrams (UDP) in C. client sends 5 msgs and upon receiving msgs, server sends msgs back. receiving and sending messages are great until client has finished receiving the msgs. after server sending all msgs back, it terminates using close(). so recvfrom() from client should return 0, right? assuming recvfrom() should return 0 upon close() resource temporarily unavailable read from server side, it returns -1 instead, with error Resource temporarily unavailable. is this resource reference to closed socket from server? or is it for something else entirely different like running out of buffer or something (which i don't think is true)? and assuming my assumption was wrong and -1 is returned because server terminated, i probably should handle the error with if(SOMEMACRO) do something but how do i find out what SOMEMACRO is? i print out the error but it says resource temp unavailable and recvfrom() description doesn't mention about unavilable resource..? btw this is a non blocking socket, if that makes any difference since i read that if O_NONBLOCK is set and no msgs are available, it would set errno to EAGAIN or EWOULDBLOCK. O_NONBLOCK isn't set but MSG_DONTWAIT is set. are they basically the same thing where O_NONBLOCK is for general file descriptors and MSG_DONTWAIT is socket specific?? My brain isn't working all that great now, if someone could enlighten me and clarify what my confusion is about, i would deeply appreciate it. Thanks! c sockets client udp share|improve this question asked Mar 4 '10 at 13:08 Fantastic Fourier 27831119 add a comment| 2 Answers 2 active oldest votes up vote 12 down vote accepted UDP is a stateless protocol, unlike TCP which is connection oriented. Your receiving code
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Udp Socket Sendto Resource Temporarily Unavailable
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Errno 11 Resource Temporarily Unavailable Python Socket
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/2379430/udp-and-sockets-recvfrom-returning-1-and-resource-temporarily-unavailable you, helping each other. Join them; it only takes a minute: Sign up sendto : Resource temporarily unavailable (errno 11) up vote 4 down vote favorite 2 I am having a problem with sendto. I have a receiver who receives UPD packets with recvfrom and then replies to the sender using sendto. Unfortunately, I am getting errno http://stackoverflow.com/questions/5737493/sendto-resource-temporarily-unavailable-errno-11 11 (Resource temporarily unavailable). I am using two sockets. The first packet is actually sent but not the ones afterwards: sendto :: Success error: 0. sendto :: Resource temporarily unavailable error: 11. sendto :: Resource temporarily unavailable ... This is an extract of my code: int sockfd, sockSend; if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) perror("socket"); if ((sockSend = socket(AF_INET, SOCK_DGRAM, 0)) < 0) perror("socket"); if (fcntl(sockfd, F_SETOWN, getpid()) < 0) { perror("fcntl"); } if (fcntl(sockfd, F_SETFL, O_RDONLY | O_NONBLOCK | FASYNC) < 0) { perror("fcntl"); } if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) perror("bind"); And in a SIGIO handler: len = sizeof(recv_addr); char buffer[payload]; bzero(buffer, payload); n = recvfrom(sockfd, buffer, payload, MSG_DONTWAIT, (struct sockaddr *)&recv_addr, &len); while (n > 0) { sprintf(response, "%d\n%d\n%d\n", items, target_buf, pb_sp); sendto(sockSend, response, strlen(response), 0, (struct sockaddr *) &recv_addr, sizeof(recv_addr)); // sleep(1); perror("sendto :"); printf("error: %d.\n", errno); } Could this issue come because the port is still hot, and I need to wait before reusing it? I've tried to chan
Tutorials/Articles Search HCL Search Reviews Search ISOs Go to Page... LinuxQuestions.org > Forums > Non-*NIX Forums > Programming [SOLVED] "resource temporarily unavailable" in recv in socket programming User Name http://www.linuxquestions.org/questions/programming-9/resource-temporarily-unavailable-in-recv-in-socket-programming-4175449814/ Remember Me? Password Programming This forum is for all programming questions. The question does http://developerweb.net/viewtopic.php?id=6513 not have to be directly related to Linux and any language is fair game. Notices Welcome to LinuxQuestions.org, a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads resource temporarily and access many other special features. Registration is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions.org? Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. If resource temporarily unavailable you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. Search this Thread 02-12-2013, 08:01 AM #1 mrjmrj LQ Newbie Registered: Feb 2013 Posts: 12 Rep: "resource temporarily unavailable" in recv in socket programming I want to read and write over Wanpipe driver (a network device driver for Sangoma cards) via socket programming but i get this message error: "resource temporarily unavailable". The ca
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 sending command "\033E 1\r" to printer,causes, check the port for error normally. In my 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 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 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 sending it new stuff. Also, what reply do you expect?And I'd try to adding a \n after the \r, or instead of it. Offline Quote #5 2010-03-03 04:45 AM kavinsivakumar Member Registered: 2010-03-02 Posts: 7 Re: Resource temporarily unavailable Error In Socket Hi, The Command "\033E 1\r" is the printer specific command.When i send this one it will check the printer port for erro