{"id":15364,"date":"2024-11-17T20:41:42","date_gmt":"2024-11-17T12:41:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=15364"},"modified":"2024-11-17T20:41:42","modified_gmt":"2024-11-17T12:41:42","slug":"tcp%e5%92%8cudp%e7%9a%84%e5%8c%ba%e5%88%ab%ef%bc%bb%e7%bb%8f%e5%85%b8%ef%bc%bd","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15364\/","title":{"rendered":"TCP\u548cUDP\u7684\u533a\u522b\uff3b\u7ecf\u5178\uff3d"},"content":{"rendered":"

TCP\u4e0eUDP\u57fa\u672c\u533a\u522b<\/h3>\n
    \n
  1. \u57fa\u4e8e\u8fde\u63a5\u4e0e\u65e0\u8fde\u63a5<\/li>\n
  2. TCP\u8981\u6c42\u7cfb\u7edf\u8d44\u6e90\u8f83\u591a\uff0cUDP\u8f83\u5c11\uff1b<\/li>\n
  3. UDP\u7a0b\u5e8f\u7ed3\u6784\u8f83\u7b80\u5355<\/li>\n
  4. \u6d41\u6a21\u5f0f\uff08TCP\uff09\u4e0e\u6570\u636e\u62a5\u6a21\u5f0f(UDP);<\/li>\n
  5. TCP\u4fdd\u8bc1\u6570\u636e\u6b63\u786e\u6027\uff0cUDP\u53ef\u80fd\u4e22\u5305<\/li>\n
  6. TCP\u4fdd\u8bc1\u6570\u636e\u987a\u5e8f\uff0cUDP\u4e0d\u4fdd\u8bc1<\/li>\n<\/ol>\n

     <\/p>\n

    UDP\u5e94\u7528\u573a\u666f\uff1a<\/h3>\n
      \n
    1. \u9762\u5411\u6570\u636e\u62a5\u65b9\u5f0f<\/li>\n
    2. \u7f51\u7edc\u6570\u636e\u5927\u591a\u4e3a\u77ed\u6d88\u606f<\/li>\n
    3. \u62e5\u6709\u5927\u91cfClient<\/li>\n
    4. \u5bf9\u6570\u636e\u5b89\u5168\u6027\u65e0\u7279\u6b8a\u8981\u6c42<\/li>\n
    5. \u7f51\u7edc\u8d1f\u62c5\u975e\u5e38\u91cd\uff0c\u4f46\u5bf9\u54cd\u5e94\u901f\u5ea6\u8981\u6c42\u9ad8<\/li>\n<\/ol>\n

      \u5177\u4f53\u7f16\u7a0b\u65f6\u7684\u533a\u522b<\/h3>\n
        \n
      1. socket()\u7684\u53c2\u6570\u4e0d\u540c<\/li>\n
      2. UDP Server\u4e0d\u9700\u8981\u8c03\u7528listen\u548caccept<\/li>\n
      3. UDP\u6536\u53d1\u6570\u636e\u7528sendto\/recvfrom\u51fd\u6570<\/li>\n
      4. TCP\uff1a\u5730\u5740\u4fe1\u606f\u5728connect\/accept\u65f6\u786e\u5b9a<\/li>\n
      5. UDP\uff1a\u5728sendto\/recvfrom\u51fd\u6570\u4e2d\u6bcf\u6b21\u5747 \u9700\u6307\u5b9a\u5730\u5740\u4fe1\u606f<\/li>\n
      6. UDP\uff1ashutdown\u51fd\u6570\u65e0\u6548<\/li>\n<\/ol>\n

        \u7f16\u7a0b\u533a\u522b<\/h3>\n

        \u901a\u5e38\u6211\u4eec\u5728\u8bf4\u5230\u7f51\u7edc\u7f16\u7a0b\u65f6\u9ed8\u8ba4\u662f\u6307TCP\u7f16\u7a0b\uff0c\u5373\u7528\u524d\u9762\u63d0\u5230\u7684socket\u51fd\u6570\u521b\u5efa\u4e00\u4e2asocket\u7528\u4e8eTCP\u901a\u8baf\uff0c\u51fd\u6570\u53c2\u6570\u6211\u4eec\u901a\u5e38\u586b\u4e3aSOCK_STREAM\u3002\u5373socket(PF_INET, SOCK_STREAM, 0)\uff0c\u8fd9\u8868\u793a\u5efa\u7acb\u4e00\u4e2asocket\u7528\u4e8e\u6d41\u5f0f\u7f51\u7edc\u901a\u8baf\u3002<\/p>\n

        SOCK_STREAM\u8fd9\u79cd\u7684\u7279\u70b9\u662f\u9762\u5411\u8fde\u63a5\u7684\uff0c\u5373\u6bcf\u6b21\u6536\u53d1\u6570\u636e\u4e4b\u524d\u5fc5\u987b\u901a\u8fc7connect\u5efa\u7acb\u8fde\u63a5\uff0c\u4e5f\u662f\u53cc\u5411\u7684\uff0c\u5373\u4efb\u4f55\u4e00\u65b9\u90fd\u53ef\u4ee5\u6536\u53d1\u6570\u636e\uff0c\u534f\u8bae\u672c\u8eab\u63d0\u4f9b\u4e86\u4e00\u4e9b\u4fdd\u969c\u673a\u5236\u4fdd\u8bc1\u5b83\u662f\u53ef\u9760\u7684\u3001\u6709\u5e8f\u7684\uff0c\u5373\u6bcf\u4e2a\u5305\u6309\u7167\u53d1\u9001\u7684\u987a\u5e8f\u5230\u8fbe\u63a5\u6536\u65b9\u3002<\/p>\n

        \u800cSOCK_DGRAM\u8fd9\u79cd\u662fUser Datagram Protocol\u534f\u8bae\u7684\u7f51\u7edc\u901a\u8baf\uff0c\u5b83\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u4e0d\u53ef\u9760\u7684\uff0c\u56e0\u4e3a\u901a\u8baf\u53cc\u65b9\u53d1\u9001\u6570\u636e\u540e\u4e0d\u77e5\u9053\u5bf9\u65b9\u662f\u5426\u5df2\u7ecf\u6536\u5230\u6570\u636e\uff0c\u662f\u5426\u6b63\u5e38\u6536\u5230\u6570\u636e\u3002\u4efb\u4f55\u4e00\u65b9\u5efa\u7acb\u4e00\u4e2asocket\u4ee5\u540e\u5c31\u53ef\u4ee5\u7528sendto\u53d1\u9001\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u7528recvfrom\u63a5\u6536\u6570\u636e\u3002\u6839\u672c\u4e0d\u5173\u5fc3\u5bf9\u65b9\u662f\u5426\u5b58\u5728\uff0c\u662f\u5426\u53d1\u9001\u4e86\u6570\u636e\u3002\u5b83\u7684\u7279\u70b9\u662f\u901a\u8baf\u901f\u5ea6\u6bd4\u8f83\u5feb\u3002\u5927\u5bb6\u90fd\u77e5\u9053TCP\u662f\u8981\u7ecf\u8fc7\u4e09\u6b21\u63e1\u624b\u7684\uff0c\u800cUDP\u6ca1\u6709\u3002<\/p>\n

        \u57fa\u4e8e\u4e0a\u8ff0\u4e0d\u540c\uff0cUDP\u548cTCP\u7f16\u7a0b\u6b65\u9aa4\u4e5f\u6709\u4e9b\u4e0d\u540c\uff0c\u5982\u4e0b\uff1a<\/p>\n

        TCP:<\/h3>\n

        TCP\u7f16\u7a0b\u7684\u670d\u52a1\u5668\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a<\/h3>\n
          \n
        1. \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b<\/li>\n
        2. \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt(); * \u53ef\u9009<\/li>\n
        3. \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind();<\/li>\n
        4. \u5f00\u542f\u76d1\u542c\uff0c\u7528\u51fd\u6570listen()\uff1b<\/li>\n
        5. \u63a5\u6536\u5ba2\u6237\u7aef\u4e0a\u6765\u7684\u8fde\u63a5\uff0c\u7528\u51fd\u6570accept()\uff1b<\/li>\n
        6. \u6536\u53d1\u6570\u636e\uff0c\u7528\u51fd\u6570send()\u548crecv()\uff0c\u6216\u8005read()\u548cwrite();<\/li>\n
        7. \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b<\/li>\n
        8. \u5173\u95ed\u76d1\u542c\uff1b<\/li>\n<\/ol>\n

          TCP\u7f16\u7a0b\u7684\u5ba2\u6237\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a<\/h3>\n
            \n
          1. \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b<\/li>\n
          2. \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt();* \u53ef\u9009<\/li>\n
          3. \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind();* \u53ef\u9009<\/li>\n
          4. \u8bbe\u7f6e\u8981\u8fde\u63a5\u7684\u5bf9\u65b9\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u7b49\u5c5e\u6027\uff1b<\/li>\n
          5. \u8fde\u63a5\u670d\u52a1\u5668\uff0c\u7528\u51fd\u6570connect()\uff1b<\/li>\n
          6. \u6536\u53d1\u6570\u636e\uff0c\u7528\u51fd\u6570send()\u548crecv()\uff0c\u6216\u8005read()\u548cwrite();<\/li>\n
          7. \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b<\/li>\n<\/ol>\n

            UDP:<\/h3>\n

            \u4e0e\u4e4b\u5bf9\u5e94\u7684UDP\u7f16\u7a0b\u6b65\u9aa4\u8981\u7b80\u5355\u8bb8\u591a\uff0c\u5206\u522b\u5982\u4e0b\uff1a<\/p>\n

            UDP\u7f16\u7a0b\u7684\u670d\u52a1\u5668\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a<\/h3>\n
              \n
            1. \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b<\/li>\n
            2. \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt();* \u53ef\u9009<\/li>\n
            3. \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind();<\/li>\n
            4. \u5faa\u73af\u63a5\u6536\u6570\u636e\uff0c\u7528\u51fd\u6570recvfrom();<\/li>\n
            5. \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b<\/li>\n<\/ol>\n

              UDP\u7f16\u7a0b\u7684\u5ba2\u6237\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a<\/h3>\n
                \n
              1. \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b<\/li>\n
              2. \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt();* \u53ef\u9009<\/li>\n
              3. \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind();* \u53ef\u9009<\/li>\n
              4. \u8bbe\u7f6e\u5bf9\u65b9\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u7b49\u5c5e\u6027;<\/li>\n
              5. \u53d1\u9001\u6570\u636e\uff0c\u7528\u51fd\u6570sendto();<\/li>\n
              6. \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b<\/li>\n<\/ol>\n

                TCP\u548cUDP\u662fOSI\u6a21\u578b\u4e2d\u7684\u8fd0\u8f93\u5c42\u4e2d\u7684\u534f\u8bae\u3002TCP\u63d0\u4f9b\u53ef\u9760\u7684\u901a\u4fe1\u4f20\u8f93\uff0c\u800cUDP\u5219\u5e38\u88ab\u7528\u4e8e\u8ba9\u5e7f\u64ad\u548c\u7ec6\u8282\u63a7\u5236\u4ea4\u7ed9\u5e94\u7528\u7684\u901a\u4fe1\u4f20\u8f93\u3002<\/p>\n

                UDP\u8865\u5145\uff1a<\/h3>\n

                UDP\u4e0d\u63d0\u4f9b\u590d\u6742\u7684\u63a7\u5236\u673a\u5236\uff0c\u5229\u7528IP\u63d0\u4f9b\u9762\u5411\u65e0\u8fde\u63a5\u7684\u901a\u4fe1\u670d\u52a1\u3002\u5e76\u4e14\u5b83\u662f\u5c06\u5e94\u7528\u7a0b\u5e8f\u53d1\u6765\u7684\u6570\u636e\u5728\u6536\u5230\u7684\u90a3\u4e00\u523b\uff0c\u7acb\u523b\u6309\u7167\u539f\u6837\u53d1\u9001\u5230\u7f51\u7edc\u4e0a\u7684\u4e00\u79cd\u673a\u5236\u3002\u5373\u4f7f\u662f\u51fa\u73b0\u7f51\u7edc\u62e5\u5835\u7684\u60c5\u51b5\u4e0b\uff0cUDP\u4e5f\u65e0\u6cd5\u8fdb\u884c\u6d41\u91cf\u63a7\u5236\u7b49\u907f\u514d\u7f51\u7edc\u62e5\u585e\u7684\u884c\u4e3a\u3002\u6b64\u5916\uff0c\u4f20\u8f93\u9014\u4e2d\u5982\u679c\u51fa\u73b0\u4e86\u4e22\u5305\uff0cUDO\u4e5f\u4e0d\u8d1f\u8d23\u91cd\u53d1\u3002\u751a\u81f3\u5f53\u51fa\u73b0\u5305\u7684\u5230\u8fbe\u987a\u5e8f\u4e71\u6389\u65f6\u4e5f\u6ca1\u6709\u7ea0\u6b63\u7684\u529f\u80fd\u3002\u5982\u679c\u9700\u8981\u8fd9\u4e9b\u7ec6\u8282\u63a7\u5236\uff0c\u90a3\u4e48\u4e0d\u5f97\u4e0d\u4ea4\u7ed9\u7531\u91c7\u7528UDO\u7684\u5e94\u7528\u7a0b\u5e8f\u53bb\u5904\u7406\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cUDP\u5c06\u90e8\u5206\u63a7\u5236\u8f6c\u79fb\u5230\u5e94\u7528\u7a0b\u5e8f\u53bb\u5904\u7406\uff0c\u81ea\u5df1\u5374\u53ea\u63d0\u4f9b\u4f5c\u4e3a\u4f20\u8f93\u5c42\u534f\u8bae\u7684\u6700\u57fa\u672c\u529f\u80fd\u3002UDP\u6709\u70b9\u7c7b\u4f3c\u4e8e\u7528\u6237\u8bf4\u4ec0\u4e48\u542c\u4ec0\u4e48\u7684\u673a\u5236\uff0c\u4f46\u662f\u9700\u8981\u7528\u6237\u5145\u5206\u8003\u8651\u597d\u4e0a\u5c42\u534f\u8bae\u7c7b\u578b\u5e76\u5236\u4f5c\u76f8\u5e94\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n

                TCP\u8865\u5145\uff1a<\/h3>\n

                TCP\u5145\u5206\u5b9e\u73b0\u4e86\u6570\u636e\u4f20\u8f93\u65f6\u5404\u79cd\u63a7\u5236\u529f\u80fd\uff0c\u53ef\u4ee5\u8fdb\u884c\u4e22\u5305\u7684\u91cd\u53d1\u63a7\u5236\uff0c\u8fd8\u53ef\u4ee5\u5bf9\u6b21\u5e8f\u4e71\u6389\u7684\u5206\u5305\u8fdb\u884c\u987a\u5e8f\u63a7\u5236\u3002\u800c\u8fd9\u4e9b\u5728UDP\u4e2d\u90fd\u6ca1\u6709\u3002\u6b64\u5916\uff0cTCP\u4f5c\u4e3a\u4e00\u79cd\u9762\u5411\u6709\u8fde\u63a5\u7684\u534f\u8bae\uff0c\u53ea\u6709\u5728\u786e\u8ba4\u901a\u4fe1\u5bf9\u7aef\u5b58\u5728\u65f6\u624d\u4f1a\u53d1\u9001\u6570\u636e\uff0c\u4ece\u800c\u53ef\u4ee5\u63a7\u5236\u901a\u4fe1\u6d41\u91cf\u7684\u6d6a\u8d39\u3002TCP\u901a\u8fc7\u68c0\u9a8c\u548c\u3001\u5e8f\u5217\u53f7\u3001\u786e\u8ba4\u5e94\u7b54\u3001\u91cd\u53d1\u63a7\u5236\u3001\u8fde\u63a5\u7ba1\u7406\u4ee5\u53ca\u7a97\u53e3\u63a7\u5236\u7b49\u673a\u5236\u5b9e\u73b0\u53ef\u9760\u6027\u4f20\u8f93\u3002<\/p>\n

                TCP\u4e0eUDP\u533a\u522b\u603b\u7ed3\uff1a<\/h3>\n
                  \n
                1. TCP\u9762\u5411\u8fde\u63a5\uff08\u5982\u6253\u7535\u8bdd\u8981\u5148\u62e8\u53f7\u5efa\u7acb\u8fde\u63a5\uff09;UDP\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u5373\u53d1\u9001\u6570\u636e\u4e4b\u524d\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5<\/li>\n
                2. TCP\u63d0\u4f9b\u53ef\u9760\u7684\u670d\u52a1\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u901a\u8fc7TCP\u8fde\u63a5\u4f20\u9001\u7684\u6570\u636e\uff0c\u65e0\u5dee\u9519\uff0c\u4e0d\u4e22\u5931\uff0c\u4e0d\u91cd\u590d\uff0c\u4e14\u6309\u5e8f\u5230\u8fbe;UDP\u5c3d\u6700\u5927\u52aa\u529b\u4ea4\u4ed8\uff0c\u5373\u4e0d\u4fdd\u00a0\u00a0 \u8bc1\u53ef\u9760\u4ea4\u4ed8<\/li>\n
                3. TCP\u9762\u5411\u5b57\u8282\u6d41\uff0c\u5b9e\u9645\u4e0a\u662fTCP\u628a\u6570\u636e\u770b\u6210\u4e00\u8fde\u4e32\u65e0\u7ed3\u6784\u7684\u5b57\u8282\u6d41;UDP\u662f\u9762\u5411\u62a5\u6587\u7684\uff0cUDP\u6ca1\u6709\u62e5\u585e\u63a7\u5236\uff0c\u56e0\u6b64\u7f51\u7edc\u51fa\u73b0\u62e5\u585e\u4e0d\u4f1a\u4f7f\u6e90\u4e3b\u673a\u7684\u53d1\u9001\u901f\u7387\u964d\u4f4e\uff08\u5bf9\u5b9e\u65f6\u5e94\u7528\u5f88\u6709\u7528\uff0c\u5982IP\u7535\u8bdd\uff0c\u5b9e\u65f6\u89c6\u9891\u4f1a\u8bae\u7b49\uff09<\/li>\n
                4. \u6bcf\u4e00\u6761TCP\u8fde\u63a5\u53ea\u80fd\u662f\u70b9\u5230\u70b9\u7684;UDP\u652f\u6301\u4e00\u5bf9\u4e00\uff0c\u4e00\u5bf9\u591a\uff0c\u591a\u5bf9\u4e00\u548c\u591a\u5bf9\u591a\u7684\u4ea4\u4e92\u901a\u4fe1<\/li>\n
                5. TCP\u9996\u90e8\u5f00\u950020\u5b57\u8282;UDP\u7684\u9996\u90e8\u5f00\u9500\u5c0f\uff0c\u53ea\u67098\u4e2a\u5b57\u8282<\/li>\n
                6. TCP\u7684\u903b\u8f91\u901a\u4fe1\u4fe1\u9053\u662f\u5168\u53cc\u5de5\u7684\u53ef\u9760\u4fe1\u9053\uff0cUDP\u5219\u662f\u4e0d\u53ef\u9760\u4fe1\u9053<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

                  TCP\u4e0eUDP\u57fa\u672c\u533a\u522b \u57fa\u4e8e\u8fde\u63a5\u4e0e\u65e0\u8fde\u63a5 TCP\u8981\u6c42\u7cfb\u7edf\u8d44\u6e90\u8f83\u591a\uff0cUDP\u8f83\u5c11\uff1b UDP\u7a0b\u5e8f\u7ed3\u6784\u8f83\u7b80\u5355 \u6d41\u6a21\u5f0f\uff08TCP\uff09\u4e0e\u6570\u636e\u62a5\u6a21\u5f0f(UDP); TCP\u4fdd\u8bc1\u6570\u636e\u6b63\u786e\u6027\uff0cUDP\u53ef\u80fd\u4e22\u5305 TCP\u4fdd\u8bc1\u6570\u636e\u987a\u5e8f\uff0cUDP\u4e0d\u4fdd\u8bc1   UDP\u5e94\u7528\u573a\u666f\uff1a \u9762\u5411\u6570\u636e\u62a5\u65b9\u5f0f \u7f51\u7edc\u6570\u636e\u5927\u591a\u4e3a\u77ed\u6d88\u606f \u62e5\u6709\u5927\u91cfClient \u5bf9\u6570\u636e\u5b89\u5168\u6027\u65e0\u7279\u6b8a\u8981\u6c42 \u7f51\u7edc\u8d1f\u62c5\u975e\u5e38\u91cd\uff0c\u4f46\u5bf9\u54cd\u5e94\u901f\u5ea6\u8981\u6c42\u9ad8 \u5177\u4f53\u7f16\u7a0b\u65f6\u7684\u533a\u522b socket()\u7684\u53c2\u6570\u4e0d\u540c UDP Server\u4e0d\u9700\u8981\u8c03\u7528listen\u548caccept UDP\u6536\u53d1\u6570\u636e\u7528sendto\/recvfrom\u51fd\u6570 TCP\uff1a\u5730\u5740\u4fe1\u606f\u5728connect\/accept\u65f6\u786e\u5b9a UDP\uff1a\u5728sendto\/recvfrom\u51fd\u6570\u4e2d\u6bcf\u6b21\u5747 \u9700\u6307\u5b9a\u5730\u5740\u4fe1\u606f UDP\uff1ashutdown\u51fd\u6570\u65e0\u6548 \u7f16\u7a0b\u533a\u522b \u901a\u5e38\u6211\u4eec\u5728\u8bf4\u5230\u7f51\u7edc\u7f16\u7a0b\u65f6\u9ed8\u8ba4\u662f\u6307TCP\u7f16\u7a0b\uff0c\u5373\u7528\u524d\u9762\u63d0\u5230\u7684socket\u51fd\u6570\u521b\u5efa\u4e00\u4e2asocket\u7528\u4e8eTCP\u901a\u8baf\uff0c\u51fd\u6570\u53c2\u6570\u6211\u4eec\u901a\u5e38\u586b\u4e3aSOCK_STREAM\u3002\u5373socket(PF_INET, SOCK_STREAM, 0)\uff0c\u8fd9\u8868\u793a\u5efa\u7acb\u4e00\u4e2asocket\u7528\u4e8e\u6d41\u5f0f\u7f51\u7edc\u901a\u8baf\u3002 SOCK_STREAM\u8fd9\u79cd\u7684\u7279\u70b9\u662f\u9762\u5411\u8fde\u63a5\u7684\uff0c\u5373\u6bcf\u6b21\u6536\u53d1\u6570\u636e\u4e4b\u524d\u5fc5\u987b\u901a\u8fc7connect\u5efa\u7acb\u8fde\u63a5\uff0c\u4e5f\u662f\u53cc\u5411\u7684\uff0c\u5373\u4efb\u4f55\u4e00\u65b9\u90fd\u53ef\u4ee5\u6536\u53d1\u6570\u636e\uff0c\u534f\u8bae\u672c\u8eab\u63d0\u4f9b\u4e86\u4e00\u4e9b\u4fdd\u969c\u673a\u5236\u4fdd\u8bc1\u5b83\u662f\u53ef\u9760\u7684\u3001\u6709\u5e8f\u7684\uff0c\u5373\u6bcf\u4e2a\u5305\u6309\u7167\u53d1\u9001\u7684\u987a\u5e8f\u5230\u8fbe\u63a5\u6536\u65b9\u3002 \u800cSOCK_DGRAM\u8fd9\u79cd\u662fUser Datagram Protocol\u534f\u8bae\u7684\u7f51\u7edc\u901a\u8baf\uff0c\u5b83\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u4e0d\u53ef\u9760\u7684\uff0c\u56e0\u4e3a\u901a\u8baf\u53cc\u65b9\u53d1\u9001\u6570\u636e\u540e\u4e0d\u77e5\u9053\u5bf9\u65b9\u662f\u5426\u5df2\u7ecf\u6536\u5230\u6570\u636e\uff0c\u662f\u5426\u6b63\u5e38\u6536\u5230\u6570\u636e\u3002\u4efb\u4f55\u4e00\u65b9\u5efa\u7acb\u4e00\u4e2asocket\u4ee5\u540e\u5c31\u53ef\u4ee5\u7528sendto\u53d1\u9001\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u7528recvfrom\u63a5\u6536\u6570\u636e\u3002\u6839\u672c\u4e0d\u5173\u5fc3\u5bf9\u65b9\u662f\u5426\u5b58\u5728\uff0c\u662f\u5426\u53d1\u9001\u4e86\u6570\u636e\u3002\u5b83\u7684\u7279\u70b9\u662f\u901a\u8baf\u901f\u5ea6\u6bd4\u8f83\u5feb\u3002\u5927\u5bb6\u90fd\u77e5\u9053TCP\u662f\u8981\u7ecf\u8fc7\u4e09\u6b21\u63e1\u624b\u7684\uff0c\u800cUDP\u6ca1\u6709\u3002 \u57fa\u4e8e\u4e0a\u8ff0\u4e0d\u540c\uff0cUDP\u548cTCP\u7f16\u7a0b\u6b65\u9aa4\u4e5f\u6709\u4e9b\u4e0d\u540c\uff0c\u5982\u4e0b\uff1a TCP: TCP\u7f16\u7a0b\u7684\u670d\u52a1\u5668\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt(); * \u53ef\u9009 \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind(); \u5f00\u542f\u76d1\u542c\uff0c\u7528\u51fd\u6570listen()\uff1b \u63a5\u6536\u5ba2\u6237\u7aef\u4e0a\u6765\u7684\u8fde\u63a5\uff0c\u7528\u51fd\u6570accept()\uff1b \u6536\u53d1\u6570\u636e\uff0c\u7528\u51fd\u6570send()\u548crecv()\uff0c\u6216\u8005read()\u548cwrite(); \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b \u5173\u95ed\u76d1\u542c\uff1b TCP\u7f16\u7a0b\u7684\u5ba2\u6237\u7aef\u4e00\u822c\u6b65\u9aa4\u662f\uff1a \u521b\u5efa\u4e00\u4e2asocket\uff0c\u7528\u51fd\u6570socket()\uff1b \u8bbe\u7f6esocket\u5c5e\u6027\uff0c\u7528\u51fd\u6570setsockopt();* \u53ef\u9009 \u7ed1\u5b9aIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u5230socket\u4e0a\uff0c\u7528\u51fd\u6570bind();* \u53ef\u9009 \u8bbe\u7f6e\u8981\u8fde\u63a5\u7684\u5bf9\u65b9\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u7b49\u5c5e\u6027\uff1b \u8fde\u63a5\u670d\u52a1\u5668\uff0c\u7528\u51fd\u6570connect()\uff1b \u6536\u53d1\u6570\u636e\uff0c\u7528\u51fd\u6570send()\u548crecv()\uff0c\u6216\u8005read()\u548cwrite(); \u5173\u95ed\u7f51\u7edc\u8fde\u63a5\uff1b UDP: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-15364","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=15364"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15364\/revisions"}],"predecessor-version":[{"id":15365,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15364\/revisions\/15365"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=15364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=15364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=15364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}