{"id":35088,"date":"2025-05-02T12:25:43","date_gmt":"2025-05-02T04:25:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35088.html"},"modified":"2025-05-02T12:25:43","modified_gmt":"2025-05-02T04:25:43","slug":"linux%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%ef%bc%9atcp%e5%a4%9a%e8%bf%9b%e7%a8%8b-%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%b9%b6%e5%8f%91%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35088.html","title":{"rendered":"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3"},"content":{"rendered":"

Linux\u7f51\u7edc\u7f16\u7a0b：TCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3<\/p>\n

  • TCP\u5e76\u53d1\u670d\u52a1\u5668\u6982\u8ff0<\/li>\n

    \u5728Linux\u7f51\u7edc\u7f16\u7a0b\u4e2d，TCP\u670d\u52a1\u5668\u4e3b\u8981\u6709\u4e09\u79cd\u5e76\u53d1\u6a21\u578b：<\/p>\n

  • \u591a\u8fdb\u7a0b\u6a21\u578b：\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u521b\u5efa\u65b0\u8fdb\u7a0b<\/li>\n
  • \u591a\u7ebf\u7a0b\u6a21\u578b：\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u521b\u5efa\u65b0\u7ebf\u7a0b<\/li>\n
  • I\/O\u591a\u8def\u590d\u7528：\u4f7f\u7528select\/poll\/epoll\u7ba1\u7406\u591a\u4e2a\u8fde\u63a5<\/li>\n

    \u672c\u6587\u5c06\u91cd\u70b9\u8bb2\u89e3\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u5f0f，\u5e76\u5206\u6790\u5173\u952e\u6280\u672f\u548c\u5e38\u89c1\u95ee\u9898\u3002<\/p>\n

  • \u591a\u8fdb\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u5b9e\u73b0<\/li>\n

    2.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u6790<\/p>\n

    #<\/span>include<\/span> <sys\/socket.h><\/span><\/span>
    \n#<\/span>include<\/span> <netinet\/in.h><\/span><\/span>
    \n#<\/span>include<\/span> <arpa\/inet.h><\/span><\/span>
    \n#<\/span>include<\/span> <unistd.h><\/span><\/span>
    \n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
    \n#<\/span>include<\/span> <string.h><\/span><\/span>
    \n#<\/span>include<\/span> <signal.h><\/span><\/span>
    \n#<\/span>include<\/span> <sys\/wait.h><\/span><\/span><\/p>\n

    #<\/span>define<\/span> BACKLOG<\/span> 5<\/span><\/span><\/span><\/p>\n

    void<\/span> client_handler<\/span>(<\/span>int<\/span> client_fd)<\/span> {<\/span>
    \n char<\/span> buf[<\/span>BUFSIZ]<\/span>;<\/span>
    \n while<\/span>(<\/span>1<\/span>)<\/span> {<\/span>
    \n bzero<\/span>(<\/span>buf,<\/span> BUFSIZ)<\/span>;<\/span>
    \n int<\/span> ret =<\/span> read<\/span>(<\/span>client_fd,<\/span> buf,<\/span> BUFSIZ)<\/span>;<\/span>
    \n if<\/span>(<\/span>ret <=<\/span> 0<\/span>)<\/span> break<\/span>;<\/span>
    \n printf<\/span>(<\/span>"Received: %s\\\\n"<\/span>,<\/span> buf)<\/span>;<\/span>
    \n }<\/span>
    \n close<\/span>(<\/span>client_fd)<\/span>;<\/span>
    \n}<\/span><\/p>\n

    int<\/span> main<\/span>(<\/span>int<\/span> argc,<\/span> char<\/span> *<\/span>argv[<\/span>]<\/span>)<\/span> {<\/span>
    \n \/\/ \u521b\u5efasocket<\/span>
    \n int<\/span> server_fd =<\/span> socket<\/span>(<\/span>AF_INET,<\/span> SOCK_STREAM,<\/span> 0<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u8bbe\u7f6e\u5730\u5740\u91cd\u7528<\/span>
    \n int<\/span> opt =<\/span> 1<\/span>;<\/span>
    \n setsockopt<\/span>(<\/span>server_fd,<\/span> SOL_SOCKET,<\/span> SO_REUSEADDR,<\/span> &<\/span>opt,<\/span> sizeof<\/span>(<\/span>opt)<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u7ed1\u5b9a\u5730\u5740<\/span>
    \n struct<\/span> sockaddr_in<\/span> addr;<\/span>
    \n addr.<\/span>sin_family =<\/span> AF_INET;<\/span>
    \n addr.<\/span>sin_port =<\/span> htons<\/span>(<\/span>atoi<\/span>(<\/span>argv[<\/span>2<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
    \n inet_aton<\/span>(<\/span>argv[<\/span>1<\/span>]<\/span>,<\/span> &<\/span>addr.<\/span>sin_addr)<\/span>;<\/span>
    \n bind<\/span>(<\/span>server_fd,<\/span> (<\/span>struct<\/span> sockaddr<\/span>*<\/span>)<\/span>&<\/span>addr,<\/span> sizeof<\/span>(<\/span>addr)<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u76d1\u542c<\/span>
    \n listen<\/span>(<\/span>server_fd,<\/span> BACKLOG)<\/span>;<\/span><\/p>\n

    \/\/ \u5904\u7406\u50f5\u5c38\u8fdb\u7a0b<\/span>
    \n signal<\/span>(<\/span>SIGCHLD,<\/span> SIG_IGN)<\/span>;<\/span><\/p>\n

    while<\/span>(<\/span>1<\/span>)<\/span> {<\/span>
    \n \/\/ \u63a5\u53d7\u8fde\u63a5<\/span>
    \n struct<\/span> sockaddr_in<\/span> client_addr;<\/span>
    \n socklen_t<\/span> len =<\/span> sizeof<\/span>(<\/span>client_addr)<\/span>;<\/span>
    \n int<\/span> client_fd =<\/span> accept<\/span>(<\/span>server_fd,<\/span> (<\/span>struct<\/span> sockaddr<\/span>*<\/span>)<\/span>&<\/span>client_addr,<\/span> &<\/span>len)<\/span>;<\/span><\/p>\n

    \/\/ \u521b\u5efa\u5b50\u8fdb\u7a0b<\/span>
    \n if<\/span>(<\/span>fork<\/span>(<\/span>)<\/span> ==<\/span> 0<\/span>)<\/span> {<\/span>
    \n close<\/span>(<\/span>server_fd)<\/span>;<\/span> \/\/ \u5b50\u8fdb\u7a0b\u5173\u95ed\u76d1\u542csocket<\/span>
    \n client_handler<\/span>(<\/span>client_fd)<\/span>;<\/span>
    \n exit<\/span>(<\/span>0<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n close<\/span>(<\/span>client_fd)<\/span>;<\/span> \/\/ \u7236\u8fdb\u7a0b\u5173\u95ed\u5ba2\u6237\u7aefsocket<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    2.2 \u5173\u952e\u6280\u672f\u70b9<\/p>\n

  • \u5730\u5740\u91cd\u7528(SO_REUSEADDR)<\/li>\n

    int<\/span> opt =<\/span> 1<\/span>;<\/span>
    \nsetsockopt<\/span>(<\/span>server_fd,<\/span> SOL_SOCKET,<\/span> SO_REUSEADDR,<\/span> &<\/span>opt,<\/span> sizeof<\/span>(<\/span>opt)<\/span>)<\/span>;<\/span><\/p>\n

    \u2022 \u5141\u8bb8\u670d\u52a1\u5668\u5feb\u901f\u91cd\u542f\u800c\u4e0d\u9700\u8981\u7b49\u5f85TIME_WAIT\u72b6\u6001\u7ed3\u675f<\/p>\n

    \u2022 \u907f\u514d"Address already in use"\u9519\u8bef<\/p>\n

  • \u50f5\u5c38\u8fdb\u7a0b\u5904\u7406<\/li>\n

    signal<\/span>(<\/span>SIGCHLD,<\/span> SIG_IGN)<\/span>;<\/span> \/\/ \u6700\u7b80\u5355\u7684\u65b9\u5f0f<\/span>
    \n\/\/ \u6216\u8005<\/span>
    \nsignal<\/span>(<\/span>SIGCHLD,<\/span> [<\/span>]<\/span>(<\/span>int<\/span> sig)<\/span> {<\/span> while<\/span>(<\/span>waitpid<\/span>(<\/span>–<\/span>1<\/span>,<\/span> NULL<\/span>,<\/span> WNOHANG)<\/span> ><\/span> 0<\/span>)<\/span>;<\/span> }<\/span>)<\/span>;<\/span><\/p>\n

    \u2022 \u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u4f1a\u53d8\u6210\u50f5\u5c38\u8fdb\u7a0b<\/p>\n

    \u2022 \u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u6216\u663e\u5f0fwait\/waitpid\u56de\u6536\u8d44\u6e90<\/p>\n

  • \u6587\u4ef6\u63cf\u8ff0\u7b26\u5173\u95ed<\/li>\n

    \u91cd\u8981\u539f\u5219：\u53ea\u6709\u5f53\u6240\u6709\u8fdb\u7a0b\u90fd\u5173\u95ed\u4e86\u6587\u4ef6\u63cf\u8ff0\u7b26，\u5185\u6838\u624d\u4f1a\u771f\u6b63\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n

    \u2022 \u7236\u8fdb\u7a0b\u9700\u8981\u5173\u95ed\u5ba2\u6237\u7aefsocket<\/p>\n

    \u2022 \u5b50\u8fdb\u7a0b\u9700\u8981\u5173\u95ed\u76d1\u542csocket<\/p>\n

  • \u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u5b9e\u73b0<\/li>\n

    3.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u6790<\/p>\n

    #<\/span>include<\/span> <pthread.h><\/span><\/span><\/p>\n

    void<\/span>*<\/span> client_handler<\/span>(<\/span>void<\/span>*<\/span> arg)<\/span> {<\/span>
    \n int<\/span> client_fd =<\/span> *<\/span>(<\/span>int<\/span>*<\/span>)<\/span>arg;<\/span>
    \n char<\/span> buf[<\/span>BUFSIZ]<\/span>;<\/span><\/p>\n

    while<\/span>(<\/span>1<\/span>)<\/span> {<\/span>
    \n bzero<\/span>(<\/span>buf,<\/span> BUFSIZ)<\/span>;<\/span>
    \n int<\/span> ret =<\/span> read<\/span>(<\/span>client_fd,<\/span> buf,<\/span> BUFSIZ)<\/span>;<\/span>
    \n if<\/span>(<\/span>ret <=<\/span> 0<\/span>)<\/span> break<\/span>;<\/span>
    \n printf<\/span>(<\/span>"Received: %s\\\\n"<\/span>,<\/span> buf)<\/span>;<\/span>
    \n }<\/span><\/p>\n

    close<\/span>(<\/span>client_fd)<\/span>;<\/span>
    \n free<\/span>(<\/span>arg)<\/span>;<\/span> \/\/ \u91ca\u653e\u52a8\u6001\u5206\u914d\u7684\u53c2\u6570<\/span>
    \n return<\/span> NULL<\/span>;<\/span>
    \n}<\/span><\/p>\n

    int<\/span> main<\/span>(<\/span>int<\/span> argc,<\/span> char<\/span> *<\/span>argv[<\/span>]<\/span>)<\/span> {<\/span>
    \n \/\/ … (\u521d\u59cb\u5316\u90e8\u5206\u4e0e\u591a\u8fdb\u7a0b\u76f8\u540c)<\/span><\/p>\n

    while<\/span>(<\/span>1<\/span>)<\/span> {<\/span>
    \n struct<\/span> sockaddr_in<\/span> client_addr;<\/span>
    \n socklen_t<\/span> len =<\/span> sizeof<\/span>(<\/span>client_addr)<\/span>;<\/span>
    \n int<\/span> client_fd =<\/span> accept<\/span>(<\/span>server_fd,<\/span> (<\/span>struct<\/span> sockaddr<\/span>*<\/span>)<\/span>&<\/span>client_addr,<\/span> &<\/span>len)<\/span>;<\/span><\/p>\n

    pthread_t<\/span> tid;<\/span>
    \n int<\/span> *<\/span>arg =<\/span> malloc<\/span>(<\/span>sizeof<\/span>(<\/span>int<\/span>)<\/span>)<\/span>;<\/span>
    \n *<\/span>arg =<\/span> client_fd;<\/span>
    \n pthread_create<\/span>(<\/span>&<\/span>tid,<\/span> NULL<\/span>,<\/span> client_handler,<\/span> arg)<\/span>;<\/span>
    \n pthread_detach<\/span>(<\/span>tid)<\/span>;<\/span> \/\/ \u5206\u79bb\u7ebf\u7a0b，\u81ea\u52a8\u56de\u6536\u8d44\u6e90<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    3.2 \u5173\u952e\u6280\u672f\u70b9<\/p>\n

  • \u7ebf\u7a0b\u53c2\u6570\u4f20\u9012<\/li>\n

    \u2022 \u5fc5\u987b\u786e\u4fdd\u6bcf\u4e2a\u7ebf\u7a0b\u83b7\u5f97\u72ec\u7acb\u7684client_fd<\/p>\n

    \u2022 \u52a8\u6001\u5206\u914d\u5185\u5b58\u4f20\u9012\u53c2\u6570，\u907f\u514d\u7ade\u4e89\u6761\u4ef6<\/p>\n

  • \u7ebf\u7a0b\u5206\u79bb<\/li>\n

    pthread_detach<\/span>(<\/span>tid)<\/span>;<\/span><\/p>\n

    \u2022 \u4f7f\u7ebf\u7a0b\u6210\u4e3a"\u5206\u79bb\u72b6\u6001"，\u9000\u51fa\u65f6\u81ea\u52a8\u56de\u6536\u8d44\u6e90<\/p>\n

    \u2022 \u66ff\u4ee3\u65b9\u6848：\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u8c03\u7528pthread_join<\/p>\n

  • \u7ebf\u7a0b\u5b89\u5168\u51fd\u6570<\/li>\n

    \u2022 inet_ntoa\u662f\u975e\u7ebf\u7a0b\u5b89\u5168\u7684，\u8003\u8651\u4f7f\u7528inet_ntop<\/p>\n

    \u2022 \u907f\u514d\u5728\u591a\u7ebf\u7a0b\u4e2d\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf<\/p>\n

  • \u5173\u952e\u5de5\u5177\u51fd\u6570\u8be6\u89e3<\/li>\n

    4.1 bzero vs memset<\/p>\n

    void<\/span> bzero<\/span>(<\/span>void<\/span> *<\/span>s,<\/span> size_t<\/span> n)<\/span>;<\/span> \/\/ \u6e05\u96f6\u5185\u5b58<\/span>
    \nvoid<\/span> *<\/span>memset<\/span>(<\/span>void<\/span> *<\/span>s,<\/span> int<\/span> c,<\/span> size_t<\/span> n)<\/span>;<\/span> \/\/ \u8bbe\u7f6e\u5185\u5b58\u503c<\/span><\/p>\n

    \u2022 bzero\u662fBSD\u9057\u7559\u51fd\u6570，POSIX\u6807\u51c6\u63a8\u8350\u4f7f\u7528memset<\/p>\n

    \u2022 \u73b0\u4ee3\u4ee3\u7801\u4e2d\u5efa\u8bae\u4f7f\u7528：memset(buf, 0, BUFSIZ)<\/p>\n

    4.2 \u5730\u5740\u8f6c\u6362\u51fd\u6570<\/p>\n

    \/\/ \u5b57\u7b26\u4e32\u8f6c\u4e8c\u8fdb\u5236\u5730\u5740<\/span>
    \nint<\/span> inet_aton<\/span>(<\/span>const<\/span> char<\/span> *<\/span>cp,<\/span> struct<\/span> in_addr<\/span> *<\/span>inp)<\/span>;<\/span><\/p>\n

    \/\/ \u4e8c\u8fdb\u5236\u5730\u5740\u8f6c\u5b57\u7b26\u4e32（\u975e\u7ebf\u7a0b\u5b89\u5168）<\/span>
    \nchar<\/span> *<\/span>inet_ntoa<\/span>(<\/span>struct<\/span> in_addr<\/span> in)<\/span>;<\/span><\/p>\n

    \/\/ \u63a8\u8350\u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7248\u672c<\/span>
    \nconst<\/span> char<\/span> *<\/span>inet_ntop<\/span>(<\/span>int<\/span> af,<\/span> const<\/span> void<\/span> *<\/span>src,<\/span> char<\/span> *<\/span>dst,<\/span> socklen_t<\/span> size)<\/span>;<\/span>
    \nint<\/span> inet_pton<\/span>(<\/span>int<\/span> af,<\/span> const<\/span> char<\/span> *<\/span>src,<\/span> void<\/span> *<\/span>dst)<\/span>;<\/span><\/p>\n

  • \u6027\u80fd\u5bf9\u6bd4\u4e0e\u9009\u62e9\u5efa\u8bae<\/li>\n\n\u7279\u6027\u591a\u8fdb\u7a0b\u6a21\u578b\u591a\u7ebf\u7a0b\u6a21\u578b<\/tr>\n\n\n\n\n\n\n
    \u8d44\u6e90\u5f00\u9500<\/td>\n\u9ad8（\u6bcf\u4e2a\u8fde\u63a5\u72ec\u7acb\u8fdb\u7a0b）<\/td>\n\u8f83\u4f4e（\u5171\u4eab\u5730\u5740\u7a7a\u95f4）<\/td>\n<\/tr>\n
    \u7a33\u5b9a\u6027<\/td>\n\u9ad8（\u8fdb\u7a0b\u9694\u79bb）<\/td>\n\u8f83\u4f4e（\u4e00\u4e2a\u7ebf\u7a0b\u5d29\u6e83\u53ef\u80fd\u5f71\u54cd\u6574\u4e2a\u670d\u52a1）<\/td>\n<\/tr>\n
    \u7f16\u7a0b\u590d\u6742\u5ea6<\/td>\n\u4e2d\u7b49<\/td>\n\u8f83\u9ad8（\u9700\u5904\u7406\u7ebf\u7a0b\u540c\u6b65）<\/td>\n<\/tr>\n
    \u9002\u7528\u573a\u666f<\/td>\nCPU\u5bc6\u96c6\u578b\u4efb\u52a1<\/td>\nI\/O\u5bc6\u96c6\u578b\u4efb\u52a1<\/td>\n<\/tr>\n
    \u8de8\u5e73\u53f0\u4e00\u81f4\u6027<\/td>\n\u597d（\u6240\u6709Unix-like\u7cfb\u7edf\u652f\u6301）<\/td>\n\u4e00\u822c（\u5b9e\u73b0\u7ec6\u8282\u6709\u5dee\u5f02）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u9009\u62e9\u5efa\u8bae： \u2022 \u9700\u8981\u9ad8\u7a33\u5b9a\u6027：\u9009\u62e9\u591a\u8fdb\u7a0b<\/p>\n

    \u2022 \u9700\u8981\u9ad8\u5e76\u53d1\u6027\u80fd：\u9009\u62e9\u591a\u7ebf\u7a0b\u6216I\/O\u591a\u8def\u590d\u7528<\/p>\n

    \u2022 \u73b0\u4ee3\u670d\u52a1\u5668\u901a\u5e38\u4f7f\u7528\u7ebf\u7a0b\u6c60+epoll\u7684\u7ec4\u5408\u65b9\u6848<\/p>\n

  • \u5b8c\u6574\u793a\u4f8b\u4ee3\u7801<\/li>\n

    [\u5b8c\u6574\u7684\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u793a\u4f8b\u4ee3\u7801\u5df2\u5728\u6587\u4e2d\u63d0\u4f9b，\u53ef\u76f4\u63a5\u7f16\u8bd1\u6d4b\u8bd5]<\/p>\n

  • \u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/li>\n

    Q1: \u4e3a\u4ec0\u4e48\u5728\u591a\u8fdb\u7a0b\u6a21\u578b\u4e2d\u7236\u8fdb\u7a0b\u8981\u5173\u95ed\u5ba2\u6237\u7aefsocket？<\/p>\n

    A: \u56e0\u4e3a\u5b50\u8fdb\u7a0b\u5df2\u7ecf\u590d\u5236\u4e86\u7236\u8fdb\u7a0b\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8868，\u53ea\u6709\u5f53\u7236\u5b50\u8fdb\u7a0b\u90fd\u5173\u95ed\u4e86socket，\u5185\u6838\u624d\u4f1a\u771f\u6b63\u91ca\u653e\u8fde\u63a5\u8d44\u6e90\u3002<\/p>\n

    Q2: \u5982\u4f55\u907f\u514d\u5927\u91cfTIME_WAIT\u72b6\u6001？<\/p>\n

    A: \u53ef\u4ee5\u8bbe\u7f6eSO_REUSEADDR\u9009\u9879，\u6216\u8005\u8c03\u6574\u5185\u6838\u53c2\u6570：<\/p>\n

    sysctl -w net.ipv4.tcp_tw_reuse=<\/span>1<\/span>
    \nsysctl -w net.ipv4.tcp_tw_recycle=<\/span>1<\/span><\/p>\n

    Q3: \u4e3a\u4ec0\u4e48\u591a\u7ebf\u7a0b\u670d\u52a1\u5668\u4e2d\u8981\u52a8\u6001\u5206\u914d\u53c2\u6570？<\/p>\n

    A: \u5982\u679c\u76f4\u63a5\u4f20\u9012\u6808\u4e0a\u7684\u53d8\u91cf\u5730\u5740，\u53ef\u80fd\u5728\u7ebf\u7a0b\u8bfb\u53d6\u524d\u5c31\u88ab\u4e3b\u7ebf\u7a0b\u4fee\u6539\u4e86，\u5bfc\u81f4\u6570\u636e\u7ade\u4e89\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb726\u6b21\uff0c\u70b9\u8d5e17\u6b21\uff0c\u6536\u85cf9\u6b21\u3002Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3\u5728Linux\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0cTCP\u670d\u52a1\u5668\u4e3b\u8981\u6709\u4e09\u79cd\u5e76\u53d1\u6a21\u578b\uff1a\u672c\u6587\u5c06\u91cd\u70b9\u8bb2\u89e3\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5e76\u5206\u6790\u5173\u952e\u6280\u672f\u548c\u5e38\u89c1\u95ee\u9898\u30022.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u67902.2 \u5173\u952e\u6280\u672f\u70b9\u2022 \u5141\u8bb8\u670d\u52a1\u5668\u5feb\u901f\u91cd\u542f\u800c\u4e0d\u9700\u8981\u7b49\u5f85TIME_WAIT\u72b6\u6001\u7ed3\u675f\u2022 \u907f\u514d"Address already in use"\u9519\u8bef\u2022 \u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u4f1a\u53d8\u6210\u50f5\u5c38\u8fdb\u7a0b\u2022 \u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u6216\u663e\u5f0fwait\/waitpid\u56de\u6536\u8d44\u6e90\u91cd\u8981\u539f\u5219\uff1a\u53ea\u6709\u5f53\u6240\u6709\u8fdb\u7a0b\u90fd\u5173\u95ed\u4e86\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5185\u6838\u624d\u4f1a\u771f\u6b63\u91ca\u653e\u8d44\u6e90\u3002\u2022 \u7236\u8fdb\u7a0b\u9700\u8981\u5173\u95ed\u5ba2\u6237\u7aef<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,78],"topic":[],"class_list":["post-35088","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-43","tag-78"],"yoast_head":"\nLinux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/35088.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb726\u6b21\uff0c\u70b9\u8d5e17\u6b21\uff0c\u6536\u85cf9\u6b21\u3002Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3\u5728Linux\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0cTCP\u670d\u52a1\u5668\u4e3b\u8981\u6709\u4e09\u79cd\u5e76\u53d1\u6a21\u578b\uff1a\u672c\u6587\u5c06\u91cd\u70b9\u8bb2\u89e3\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5e76\u5206\u6790\u5173\u952e\u6280\u672f\u548c\u5e38\u89c1\u95ee\u9898\u30022.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u67902.2 \u5173\u952e\u6280\u672f\u70b9\u2022 \u5141\u8bb8\u670d\u52a1\u5668\u5feb\u901f\u91cd\u542f\u800c\u4e0d\u9700\u8981\u7b49\u5f85TIME_WAIT\u72b6\u6001\u7ed3\u675f\u2022 \u907f\u514d"Address already in use"\u9519\u8bef\u2022 \u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u4f1a\u53d8\u6210\u50f5\u5c38\u8fdb\u7a0b\u2022 \u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u6216\u663e\u5f0fwait\/waitpid\u56de\u6536\u8d44\u6e90\u91cd\u8981\u539f\u5219\uff1a\u53ea\u6709\u5f53\u6240\u6709\u8fdb\u7a0b\u90fd\u5173\u95ed\u4e86\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5185\u6838\u624d\u4f1a\u771f\u6b63\u91ca\u653e\u8d44\u6e90\u3002\u2022 \u7236\u8fdb\u7a0b\u9700\u8981\u5173\u95ed\u5ba2\u6237\u7aef\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/35088.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-02T04:25:43+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35088.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/35088.html\",\"name\":\"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2025-05-02T04:25:43+00:00\",\"dateModified\":\"2025-05-02T04:25:43+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/35088.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/35088.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35088.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/35088.html","og_locale":"zh_CN","og_type":"article","og_title":"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb726\u6b21\uff0c\u70b9\u8d5e17\u6b21\uff0c\u6536\u85cf9\u6b21\u3002Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3\u5728Linux\u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0cTCP\u670d\u52a1\u5668\u4e3b\u8981\u6709\u4e09\u79cd\u5e76\u53d1\u6a21\u578b\uff1a\u672c\u6587\u5c06\u91cd\u70b9\u8bb2\u89e3\u591a\u8fdb\u7a0b\u548c\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5e76\u5206\u6790\u5173\u952e\u6280\u672f\u548c\u5e38\u89c1\u95ee\u9898\u30022.1 \u6838\u5fc3\u4ee3\u7801\u89e3\u67902.2 \u5173\u952e\u6280\u672f\u70b9\u2022 \u5141\u8bb8\u670d\u52a1\u5668\u5feb\u901f\u91cd\u542f\u800c\u4e0d\u9700\u8981\u7b49\u5f85TIME_WAIT\u72b6\u6001\u7ed3\u675f\u2022 \u907f\u514d"Address already in use"\u9519\u8bef\u2022 \u5b50\u8fdb\u7a0b\u9000\u51fa\u540e\u4f1a\u53d8\u6210\u50f5\u5c38\u8fdb\u7a0b\u2022 \u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u6216\u663e\u5f0fwait\/waitpid\u56de\u6536\u8d44\u6e90\u91cd\u8981\u539f\u5219\uff1a\u53ea\u6709\u5f53\u6240\u6709\u8fdb\u7a0b\u90fd\u5173\u95ed\u4e86\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u5185\u6838\u624d\u4f1a\u771f\u6b63\u91ca\u653e\u8d44\u6e90\u3002\u2022 \u7236\u8fdb\u7a0b\u9700\u8981\u5173\u95ed\u5ba2\u6237\u7aef","og_url":"https:\/\/www.wsisp.com\/helps\/35088.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2025-05-02T04:25:43+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/35088.html","url":"https:\/\/www.wsisp.com\/helps\/35088.html","name":"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2025-05-02T04:25:43+00:00","dateModified":"2025-05-02T04:25:43+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/35088.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/35088.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/35088.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"Linux\u7f51\u7edc\u7f16\u7a0b\uff1aTCP\u591a\u8fdb\u7a0b\/\u591a\u7ebf\u7a0b\u5e76\u53d1\u670d\u52a1\u5668\u8be6\u89e3"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/35088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=35088"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/35088\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=35088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=35088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=35088"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=35088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}