Free Error Bind Free Error Bind
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Bind Address Already In Use Linux
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Bind Address Already In Use Ssh
have the following listener socket: int sd = socket(PF_INET, SOCK_STREAM, 0); struct sockaddr_in addr; bzero(&addr, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_port = htons(http_port); addr.sin_addr.s_addr = INADDR_ANY; if(bind(sd,(sockaddr*)&addr,sizeof(addr))!=0) { ... } if (listen(sd, 16)!=0) { ... } int sent = 0; for(;;) { int client = accept(sd, (sockaddr*)&addr, (socklen_t*)&size); if (client > 0) { ... close(client); } } If a use close(sd); and then trying to recreate socket with the same so_reuseaddr example code, a bind error happens, and only after 30-60 second a new socket is created successfully. It there a way to create or close in some cool way to avoid bind error? c sockets bind share|improve this question asked Apr 8 '11 at 8:53 spe 38751122 add a comment| 4 Answers 4 active oldest votes up vote 15 down vote accepted Somewhere in the kernel, there's still some information about your previous socket hanging around. Tell the kernel that you are willing to re-use the port anyway: int yes=1; //char yes='1'; // use this under Solaris if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) == -1) { perror("setsockopt"); exit(1); } See the bind() section in beej's Guide to Network Programming for a more detailed explanation. share|improve this answer answered Apr 8 '11 at 9:01 Philip 3,6251857 add a comment| up vote 1 down vote This is the expected behavior for TCP sockets. When you close a socket it goes to the TIME_WAIT state. It will accept and drop packets for this port. You need to set the SO_REUSEADDR option to bind immediately again. share|improve this answer answered Apr 8 '11 at 9:00 harper 8,46842867 add a comment| up vote 0 down vote Try calling setsockopt with SO_REUSEADDR. Refer: http://msdn.microsoft.com/en-us/library/ms740476(v=vs.85).
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