Bind Error 125
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Bind Address Already In Use Linux
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How To Use So_reuseaddr
free by `netstat` up vote 30 down vote favorite 8 I tried to bind my socket(server socket) at port number 8000. It worked and did the job for me. At the end of the code I close the socket as well. The very next instant I run my code again and it shows me that the address is already in use. I have printed the meaning of error values strerror(errno); to
Address Already In Use Socket
see if my code working properly at each point. To check if the port is free I checked it using netstat but it shows that port number 8000 is free. It has happened with me a lot of times. Every time I then wait for a few more secs and then it starts working again. I am using c language. So what is he reason for this behavior by my OS. After a few more secs I run the code and then it works. anirudh@anirudh-Aspire-5920:~/Desktop/testing$ sudo ./a.out Socket Creation: Success File open: Success Socket Bind: Address already in use Socket Listen: Address already in use ^C anirudh@anirudh-Aspire-5920:~/Desktop/testing$ sudo netstat -lntp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1348/lighttpd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 984/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1131/cupsd tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1211/mysqld tcp6 0 0 :::22 :::* LISTEN 984/sshd tcp6 0 0 ::1:631 :::* LISTEN 1131/cupsd anirudh@anirudh-Aspire-5920:~/Desktop/testing$ sudo ./a.out Socket Creation: Success File open: Success Socket Bind: Address already in use Socket Listen: Address already in use ^C anirudh@anirudh-Aspire-5920:~/Desktop/testing$ c linux sockets share|improve this question edited Dec 18 '15 at 20:40 iharob 39.3k42851 asked Feb 24 '11 at 15:25 Durin 6873122
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Java, SQL, and other programming languages here. Search Forums Show Threads Show Posts Tag Search Advanced Search Unanswered Threads Find All Thanked Posts Go to Page... unix and linux commands - unix shell scripting how to solve error : Bind: http://www.unix.com/programming/29475-how-solve-error-bind-address-already-use.html Address Already in Use Programming Thread Tools Search this Thread Display Modes #1 07-24-2006 bhakti Registered User Join Date: Sep 2005 Last Activity: 19 September 2007, 6:48 AM EDT http://unix.stackexchange.com/questions/121230/nc-bind-failed-address-already-in-use Posts: 13 Thanks: 0 Thanked 0 Times in 0 Posts how to solve error : Bind: Address Already in Use hi i have created socket program with proper IP address and port no client side port no 1085[listen] and address already 1086[send] gateway side port no 1086[listen_to_client] and 1085[send_to_client] and port no 1087[listen_to_receiver] and 1088[send_to_receiver] receiver side port no 1088[listen_to_client] and 1087[send_to_client] well it works fine on client and gateway side not on receiver and gateway side it gives error on address binding. can any one suggest why this happing so when this bind error comes thankx Last edited by bhakti; 07-24-2006 at 05:43 AM.. Remove advertisements Sponsored Links bhakti View Public Profile Find all posts by bhakti #2 address already in 07-24-2006 grial El UNIX es como un toro Join Date: Jun 2006 Last Activity: 1 December 2008, 8:39 AM EST Location: Madrid (Spain) Posts: 531 Thanks: 0 Thanked 1 Time in 1 Post The error is clear: The IP/port are in use. Try to gess what, among all the ports your app uses, is the one in use. To do so, use lsof if it's available on your system or netstat if it's not. Regards. Remove advertisements Sponsored Links grial View Public Profile Find all posts by grial #3 07-27-2006 Hitori kharkovpromenade.com.ua Join Date: Jun 2006 Last Activity: 10 December 2011, 9:33 AM EST Posts: 360 Thanks: 0 Thanked 9 Times in 8 Posts Sometimes you try to bind() and have an error "Address already in use". Someone is still handling the port. You can either wait for it to clear (a minute or so), or add code to your program allowing it to reuse the port: Code: int tr=1; // kill "Address already in use" error message if (setsockopt(listener,SOL_SOCKET,SO_REUSEADDR,&tr,sizeof(int)) == -1) { perror("setsockopt"); exit(1); } Remove advertisements Sponsored Links Hitori View Public Profile Visit Hitori's homepage! Find all posts by Hitori « Previous Thread | Next Thread » Thread Tools Show Printable Version Email this Page Subscribe to this Thread Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Searc
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 Unix & Linux Questions 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 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 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