Error Binding Socket Address Already Use
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company error binding socket addr='af_unix(/dev/log)' error='address already in use (98)' Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs
Bind Socket Failed With Error Address Already In Use
Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, pgpool bind socket failed with error address already in use just like you, helping each other. Join them; it only takes a minute: Sign up bind failed. Error: Address already in use [closed] up vote 13 down vote favorite 8 I am new in Socket programming,Linux ,C..
Could Not Bind Socket Address Already In Use
This is my Bind part of the Socket program //Bind if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0) { //print the error message perror("bind failed. Error"); return 1; } puts("bind done"); But it gives user-desktop:~/socket_programming$ ./server Socket created bind failed. Error: Address already in use I don't know how to fix this problem.. Please give me a solution.. c linux sockets share|improve this question edited Jun 17 at 8:30 Chaitanya Bapat 12315 asked Mar 4 can't bind server socket address already in use '13 at 9:59 TamiL 1,09431230 closed as too localized by Nick, dandan78, BЈовић, EJP, Öö Tiib Mar 4 '13 at 12:08 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question. 1 Use a different port number? –Nick Mar 4 '13 at 10:01 2 Use an address that isn't already in use. –David Schwartz Mar 4 '13 at 10:02 I got it.. I choose different ports... Thanks for the help .. Thanks all. –TamiL Mar 4 '13 at 10:18 1 I faced the same issue when I closed the server program with client program still running. This put the socket into TIME_WAIT state. Here's an elaborate discussion of the problem: How to forcibly close a socket in TIME_WAIT? –Narendra Apr 5 at 6:10 add a comment| 4 Answers 4 active oldest votes up vote 12 down vote accepted The error usually means that the port you are trying to open is being already used by another application
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more
Error Binding Socket Addr='af_inet
about Stack Overflow the company Business Learn more about hiring developers or posting
Error Binding Socket (3420)
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack how to use so_reuseaddr Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up bind failed. Error: Address already in use [closed] up vote 13 http://stackoverflow.com/questions/15198834/bind-failed-error-address-already-in-use down vote favorite 8 I am new in Socket programming,Linux ,C.. This is my Bind part of the Socket program //Bind if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0) { //print the error message perror("bind failed. Error"); return 1; } puts("bind done"); But it gives user-desktop:~/socket_programming$ ./server Socket created bind failed. Error: Address already in use I don't know how to fix this problem.. Please give me a solution.. http://stackoverflow.com/questions/15198834/bind-failed-error-address-already-in-use c linux sockets share|improve this question edited Jun 17 at 8:30 Chaitanya Bapat 12315 asked Mar 4 '13 at 9:59 TamiL 1,09431230 closed as too localized by Nick, dandan78, BЈовић, EJP, Öö Tiib Mar 4 '13 at 12:08 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question. 1 Use a different port number? –Nick Mar 4 '13 at 10:01 2 Use an address that isn't already in use. –David Schwartz Mar 4 '13 at 10:02 I got it.. I choose different ports... Thanks for the help .. Thanks all. –TamiL Mar 4 '13 at 10:18 1 I faced the same issue when I closed the server program with client program still running. This put the socket into TIME_WAIT state. Here's an elaborate discussion of the problem: How to forcibly close a socket in TIME_WAIT? –Narendra Apr 5 at 6:10
and both ends must ACK (acknowledge) each other's FIN packets. The FIN packets are initiated by the application performing a close(), http://hea-www.harvard.edu/~fine/Tech/addrinuse.html a shutdown(), or an exit(). The ACKs are handled by the kernel after the close() has completed. Because of this, it is possible for the process to complete before the kernel https://forum.golangbridge.org/t/bind-address-already-in-use-even-after-listener-closed/1510 has released the associated network resource, and this port cannot be bound to another process until the kernel has decided that it is done. Figure 1 Figure 1 shows all of address already the possible states that can occur during a normal closure, depending on the order in which things happen. Note that if you initiate closure, there is a TIME_WAIT state that is absent from the other side. This TIME_WAIT is necessary in case the ACK you sent wasn't received, or in case spurious packets show up for other reasons. I'm really not sure already in use why this state isn't necessary on the other side, when the remote end initiates closure, but this is definitely the case. TIME_WAIT is the state that typically ties up the port for several minutes after the process has completed. The length of the associated timeout varies on different operating systems, and may be dynamic on some operating systems, however typical values are in the range of one to four minutes. If both ends send a FIN before either end receives it, both ends will have to go through TIME_WAIT. Normal Closure of Listen Sockets A socket which is listening for connections can be closed immediately if there are no connections pending, and the state proceeds directly to CLOSED. If connections are pending however, FIN_WAIT_1 is entered, and a TIME_WAIT is inevitable. Note that it is impossible to completely guarantee a clean closure here. While you can check the connections using a select() call before closure, a tiny but real possibility exists that a connection could arrive after the select() but before the close(). Abnormal Closure If the remote application dies unexpectedly while the conn
// ln is listening on :8080 err = ln.Close() // succeeds, no error if err != nil { log.Fatal(err) } ln2, err := net.Listen("tcp", ":8080") if err != nil { log.Fatal(err) // bind: address already in use } I was wondering if SO_REUSEADDR had something to do with this, but as far as I know, that is already being used under the hood in the Go standard library when creating a new tcp listener. Any ideas how I can re-bind to that address without delay? jdh (Joe Henke) 2015-11-14 18:40:19 UTC #2 Hey Matt, I tried to reproduce this and did not on my mac but did on the go playground. Where did this happen for you? Interestingly, both on my mac and on the go playground, if you use -addr="" or change to defaultAddr to "" in the source (which I think just means it will bind to any open port, yeah?) it will never rebind to the same port, and in fact will bind to the previous attempt's port + 1. Not sure if this is significant; I don't know precisely what binding to "" is specced to do. Joe matt (Matt Holt) 2015-11-14 19:09:42 UTC #3 Thanks for trying to reproduce it - next time I'll try to provide a full code sample I'm experiencing the Go playground's behavior on my Mac. But when I ran your test program on my Mac, it passed. I will look into this further in my own program. Meanwhile, I am intensely curious as to why the test fails on the Go playground... matt (Matt Holt) 2015-11-14 19:57:23 UTC #4 Okay, I've narrowed it down a little bit. This only happens for me when my program has restarted itself using exec.Command(os.Args[0], ...) and, in that command, it sets ExtraFiles to a list of file descriptors for listeners. (Similar to this method: http://grisha.org/blog/2014/06/03/graceful-restart-in-golang/) This lets the child process (itself) use the existing listeners without downtime. In the "restarted" process, then: I close the listeners, immediately create new ones on the same addresses agai