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一直以来以为accept阻塞的时候,若另有线程关闭相应的监听套接字,accept会立即返回。
今天先是在NDK上试,没反应。又在ARCHLINUX试了下,还是没反应。难道是我一直记的都是错的!!!!!!!!!!!!!!!!写下来,以做备忘,同时写一份非阻塞的ACCEPT
1 int tcp_accept_timed( int fd, int msecs ) 2 { 3 int rc, connfd; 4 struct timeval tv; 5 fd_set rset; 6 struct sockaddr_in sin; 7 socklen_t len; 8 9 do 10 { 11 tv.tv_sec = msecs / 1000; 12 tv.tv_usec = ( msecs % 1000 ) * 1000; 13 14 FD_ZERO( &rset ); 15 FD_SET( fd, &rset ); 16 } 17 while ( ( rc = select( fd + 1, &rset, NULL, NULL, &tv ) ) == -1 && errno == EINTR ); 18 if ( rc < 1 ) 19 { 20 if ( rc == -1 ) 21 { 22 perror( "select" ); 23 } 24 return -1; 25 } 26 27 len = sizeof( struct sockaddr_in ); 28 memset( &sin, 0, len ); 29 connfd = accept( fd, ( struct sockaddr* )&sin, &len ); 30 if ( connfd == -1 ) 31 { 32 perror( "accept" ); 33 } 34 else 35 { 36 fprintf( stdout, "peer address ------ [%s:%d]\n", inet_ntoa( sin.sin_addr ), ntohs( sin.sin_port ) ); 37 } 38 39 return connfd; 40 }
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原文地址:http://www.cnblogs.com/javado/p/5373170.html