Error On Binding Address Already In Use Socket
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Pgpool Bind Socket Failed With Error Address Already In Use
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How To Use So_reuseaddr
vote 2 down vote favorite 3 I've gone through many posts and forums and I'm new to socket programming. Major parts of my code are similar to BIND ERROR : Address already in use but then i changed my code so that i include "setsockopt" function like so: const char* port="5555"; int opt=1; portno=atoi(port); //parameters for server address serv_addr.sin_family=AF_INET; serv_addr.sin_port=htons(portno); serv_addr.sin_addr.s_addr=INADDR_ANY; //bind the socket to the address setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,(const char *)&opt,sizeof(int)); if(bind(sockfd,(struct address already in use linux sockaddr*)&serv_addr,sizeof(serv_addr))<0) {close(sockfd); error("error in binding port!"); } But still i get the error. I have to close the terminal and restart it in order to use the port again. I want to use a hardcoded port (like i mentioned in the code above) Thanks a lot in advance c sockets unix tcp share|improve this question edited Feb 9 '12 at 8:56 Joachim Pileborg 211k15141249 asked Feb 9 '12 at 8:53 arvind 501311 Check the value returned by setsockopt. –cnicutar Feb 9 '12 at 8:56 Are you sure you don't have a lingering process somewhere? –Laur Ivan Feb 9 '12 at 8:56 return value of setsockopt is 0 when the binding fails,however if the server is up then the return value is not displayed. –arvind Feb 9 '12 at 9:38 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted A port number can only be used by one application at a time. That means you can not start the same program twice expecting both to bind to the same port. The SO_REUSEADDR is for when the socket bound to an address has already been closed, the same address (ip-address/port pair) can be used again directly. share|improve this ans
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Bind Failed Address Already In Use Iperf
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Bind Address Already In Use Ssh
us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is bind: address already in use mac a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up error in binding port “Address already in use” TCP socket programming in unix up http://stackoverflow.com/questions/9207781/error-in-binding-port-address-already-in-use-tcp-socket-programming-in-unix vote 2 down vote favorite 3 I've gone through many posts and forums and I'm new to socket programming. Major parts of my code are similar to BIND ERROR : Address already in use but then i changed my code so that i include "setsockopt" function like so: const char* port="5555"; int opt=1; portno=atoi(port); //parameters for server address serv_addr.sin_family=AF_INET; serv_addr.sin_port=htons(portno); serv_addr.sin_addr.s_addr=INADDR_ANY; //bind the socket to the address setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,(const char *)&opt,sizeof(int)); http://stackoverflow.com/questions/9207781/error-in-binding-port-address-already-in-use-tcp-socket-programming-in-unix if(bind(sockfd,(struct sockaddr*)&serv_addr,sizeof(serv_addr))<0) {close(sockfd); error("error in binding port!"); } But still i get the error. I have to close the terminal and restart it in order to use the port again. I want to use a hardcoded port (like i mentioned in the code above) Thanks a lot in advance c sockets unix tcp share|improve this question edited Feb 9 '12 at 8:56 Joachim Pileborg 211k15141249 asked Feb 9 '12 at 8:53 arvind 501311 Check the value returned by setsockopt. –cnicutar Feb 9 '12 at 8:56 Are you sure you don't have a lingering process somewhere? –Laur Ivan Feb 9 '12 at 8:56 return value of setsockopt is 0 when the binding fails,however if the server is up then the return value is not displayed. –arvind Feb 9 '12 at 9:38 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote accepted A port number can only be used by one application at a time. That means you can not start the same program twice expecting both to bind to the same port. The SO_REUSEADDR is for when the socket bound to an address has already been closed, the same address (ip-address/port pair) can be used again directly. share|im
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 http://stackoverflow.com/questions/15198834/bind-failed-error-address-already-in-use Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack 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 down vote favorite address already 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.. c linux sockets share|improve this address already in 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 add a comment| 4 Answers 4 active oldest votes u