Bind Error Address Already In Use Linux
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Linux Socket Bind Error
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Bind Failed Address Already In Use Iperf
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.. 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; } how to use so_reuseaddr 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 11815 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
and both ends must ACK (acknowledge) each other's FIN packets. The FIN packets are initiated by the application performing a close(), a shutdown(), or
Bind Address Already In Use Ssh
an exit(). The ACKs are handled by the kernel after the close() has
Address Already In Use Socket
completed. Because of this, it is possible for the process to complete before the kernel has released the associated network address already in use python 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 the possible states that can occur during http://stackoverflow.com/questions/15198834/bind-failed-error-address-already-in-use 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 why this state isn't necessary on the other side, when http://hea-www.harvard.edu/~fine/Tech/addrinuse.html 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 connection is established, the local end will have to initiate closure. In this case TIME_WAIT is unavoidable. If the remote end
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 http://unix.stackexchange.com/questions/121230/nc-bind-failed-address-already-in-use Business Learn more about hiring developers or posting ads with us Unix & Linux Questions http://askubuntu.com/questions/447820/ssh-l-error-bind-address-already-in-use Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top address already nc: bind failed: Address already in use up vote 4 down vote favorite 1 I am trying to execute nc command from a script , my script is executing nc command on different ports of Destination using the same source port. e.g: nc -p 8140 -z -v -n 10.X.X.9 9090 nc -p 8140 -z -v -n 10.X.X.9 9091 nc -p 8140 -z -v -n 10.X.X.9 9092 nc -p 8140 -z -v -n 10.X.X.9 9093 and so address already in on ... After the 1st nc execution , for the remaining of all the lines I am getting below mentioned error message. nc: bind failed: Address already in use nc: bind failed: Address already in use nc: bind failed: Address already in use Is there any way of avoiding this situation? networking tcp netcat share|improve this question edited Dec 9 '14 at 14:48 Eric Leschinski 6891614 asked Mar 24 '14 at 21:27 saurav 1641211 add a comment| 2 Answers 2 active oldest votes up vote 7 down vote accepted Background When you're attempting to use nc in this manner it's continuing to keep the TCP port open, waiting for the destination to acknowledge the receiving of the done request. This is highlighted in the TCP article on Wikipedia. TIME-WAIT (either server or client) represents waiting for enough time to pass to be sure the remote TCP received the acknowledgment of its connection termination request. [According to RFC 793 a connection can stay in TIME-WAIT for a maximum of four minutes known as a MSL (maximum segment lifetime).] You can see the effects of this when I use nc similarly: $ nc -p 8140 -v -n 192.168.1.105 80 Looking at the state of port 8140: $ netstat -anpt | grep 8140 tcp 0 0 192.168.1.3:8140 192.168.1.105:80 TIME_WAIT - In fact on most Linux systems this TIME_WAI
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start 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 Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top ssh -L (error: bind: Address already in use) up vote 9 down vote favorite 5 Pretty simple, I know that this has happened to me before. Couldn't find a good answer on AU. I was running an ssh session with ports bound: ssh -L 3000: