Recvfrom Error 11
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Errno 11 Resource Temporarily Unavailable Python
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Resource Temporarily Unavailable Socket Recv
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 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){ errno eagain 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 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
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Resource Temporarily Unavailable Socket Read
Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs errno 11 resource temporarily unavailable python socket Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, resource temporarily unavailable read just 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 http://stackoverflow.com/questions/13554691/c-sockets-errno-11-resource-temporarily-unavailable and 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 http://stackoverflow.com/questions/2379430/udp-and-sockets-recvfrom-returning-1-and-resource-temporarily-unavailable close() 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
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