{"id":4048,"date":"2020-01-02T12:09:40","date_gmt":"2020-01-02T04:09:40","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4048"},"modified":"2020-01-02T12:10:54","modified_gmt":"2020-01-02T04:10:54","slug":"golang-tcp-%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4048","title":{"rendered":"golang tcp \u7f16\u7a0b"},"content":{"rendered":"
\n
\u539f\u6587\u5730\u5740<\/a><\/div>\n
<\/div>\n<\/div>\n
\n

\u6253\u5f00\u94fe\u63a5<\/h2>\n

TCP Socket\u7684\u8fde\u63a5\u7684\u5efa\u7acb\u9700\u8981\u7ecf\u5386\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u7684\u4e09\u6b21\u63e1\u624b\u7684\u8fc7\u7a0b\u3002
\n\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b\u4e2d\uff0c\u670d\u52a1\u7aef\u662f\u4e00\u4e2a\u6807\u51c6\u7684Listen + Accept\u7684\u7ed3\u6784(\u53ef\u53c2\u8003\u4e0a\u9762\u7684\u4ee3\u7801)\uff0c\u800c\u5728\u5ba2\u6237\u7aefGo\u8bed\u8a00\u4f7f\u7528net.Dial\u6216DialTimeout\u8fdb\u884c\u8fde\u63a5\u5efa\u7acb\uff1a<\/p>\n

\u963b\u585eDial\uff1a<\/p>\n

\n

 <\/p>\n

conn,<\/span> err :=<\/span> net.<\/span>Dial<\/span>(<\/span>\"tcp\"<\/span>,<\/span> \"google.com:80\"<\/span>)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u8d85\u65f6\u673a\u5236\u7684Dial\uff1a<\/p>\n
\n
 <\/p>\n
conn,<\/span> err :=<\/span> net.<\/span>DialTimeout<\/span>(<\/span>\"tcp\"<\/span>,<\/span> \":8080\"<\/span>,<\/span> 2<\/span> *<\/span> time.<\/span>Second)<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u5efa\u7acb\u4f1a\u9047\u5230\u5982\u4e0b\u51e0\u79cd\u60c5\u5f62<\/h2>\n
1 \u7f51\u7edc\u4e0d\u53ef\u8fbe\u6216\u5bf9\u65b9\u670d\u52a1\u672a\u542f\u52a8<\/p>\n
\u5982\u679c\u4f20\u7ed9Dial\u7684Addr\u662f\u53ef\u4ee5\u7acb\u5373\u5224\u65ad\u51fa\u7f51\u7edc\u4e0d\u53ef\u8fbe\uff0c\u6216\u8005Addr\u4e2d\u7aef\u53e3\u5bf9\u5e94\u7684\u670d\u52a1\u6ca1\u6709\u542f\u52a8\uff0c\u7aef\u53e3\u672a\u88ab\u76d1\u542c\uff0cDial\u4f1a\u51e0\u4e4e\u7acb\u5373\u8fd4\u56de\u9519\u8bef\uff0c\u6bd4\u5982\uff1a<\/p>\n
2 \u5bf9\u65b9\u670d\u52a1\u7684listen backlog\u6ee1<\/p>\n
\u8fd8\u6709\u4e00\u79cd\u573a\u666f\u5c31\u662f\u5bf9\u65b9\u670d\u52a1\u5668\u5f88\u5fd9\uff0c\u77ac\u95f4\u6709\u5927\u91cfclient\u7aef\u8fde\u63a5\u5c1d\u8bd5\u5411server\u5efa\u7acb\uff0cserver\u7aef\u7684listen backlog\u961f\u5217\u6ee1\uff0cserver accept\u4e0d\u53ca\u65f6((\u5373\u4fbf\u4e0daccept\uff0c\u90a3\u4e48\u5728backlog\u6570\u91cf\u8303\u7574\u91cc\u9762\uff0cconnect\u90fd\u4f1a\u662f\u6210\u529f\u7684\uff0c\u56e0\u4e3anew conn\u5df2\u7ecf\u52a0\u5165\u5230server side\u7684listen queue\u4e2d\u4e86\uff0caccept\u53ea\u662f\u4ecequeue\u4e2d\u53d6\u51fa\u4e00\u4e2aconn\u800c\u5df2)\uff0c\u8fd9\u5c06\u5bfc\u81f4client\u7aefDial\u963b\u585e\u3002\u6211\u4eec\u8fd8\u662f\u901a\u8fc7\u4f8b\u5b50\u611f\u53d7Dial\u7684\u884c\u4e3a\u7279\u70b9\uff1a<\/p>\n
3 \u7f51\u7edc\u5ef6\u8fdf\u8f83\u5927\uff0cDial\u963b\u585e\u5e76\u8d85\u65f6<\/p>\n
\u5982\u679c\u7f51\u7edc\u5ef6\u8fdf\u8f83\u5927\uff0cTCP\u63e1\u624b\u8fc7\u7a0b\u5c06\u66f4\u52a0\u8270\u96be\u574e\u5777\uff08\u5404\u79cd\u4e22\u5305\uff09\uff0c\u65f6\u95f4\u6d88\u8017\u7684\u81ea\u7136\u4e5f\u4f1a\u66f4\u957f\u3002
\nDial\u8fd9\u65f6\u4f1a\u963b\u585e\uff0c\u5982\u679c\u957f\u65f6\u95f4\u4f9d\u65e7\u65e0\u6cd5\u5efa\u7acb\u8fde\u63a5\uff0c\u5219Dial\u4e5f\u4f1a\u8fd4\u56de\u201c getsockopt: operation timed out\u201d\u9519\u8bef\u3002<\/p>\n
\u5728\u8fde\u63a5\u5efa\u7acb\u9636\u6bb5\uff0c\u591a\u6570\u60c5\u51b5\u4e0b\uff0cDial\u662f\u53ef\u4ee5\u6ee1\u8db3\u9700\u6c42\u7684\uff0c\u5373\u4fbf\u963b\u585e\u4e00\u5c0f\u4f1a\u513f\u3002
\n\u4f46\u5bf9\u4e8e\u67d0\u4e9b\u7a0b\u5e8f\u800c\u8a00\uff0c\u9700\u8981\u6709\u4e25\u683c\u7684\u8fde\u63a5\u65f6\u95f4\u9650\u5b9a\uff0c\u5982\u679c\u4e00\u5b9a\u65f6\u95f4\u5185\u6ca1\u80fd\u6210\u529f\u5efa\u7acb\u8fde\u63a5\uff0c\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u9700\u8981\u6267\u884c\u4e00\u6bb5\u201c\u5f02\u5e38\u201d\u5904\u7406\u903b\u8f91\uff0c\u4e3a\u6b64\u6211\u4eec\u5c31\u9700\u8981DialTimeout\u4e86\u3002
\n\u4e0b\u9762\u7684\u4f8b\u5b50\u5c06Dial\u7684\u6700\u957f\u963b\u585e\u65f6\u95f4\u9650\u5236\u57282s\u5185\uff0c\u8d85\u51fa\u8fd9\u4e2a\u65f6\u957f\uff0cDial\u5c06\u8fd4\u56detimeout error.<\/p>\n
\u670d\u52a1\u7aef\u8bfb\u7684\u884c\u4e3a\u7279\u70b9<\/h2>\n
1 Socket\u4e2d\u65e0\u6570\u636e<\/p>\n
\u8fde\u63a5\u5efa\u7acb\u540e\uff0c\u5982\u679c\u5bf9\u65b9\u672a\u53d1\u9001\u6570\u636e\u5230socket\uff0c\u63a5\u6536\u65b9(Server)\u4f1a\u963b\u585e\u5728Read\u64cd\u4f5c\u4e0a\u3002\u6267\u884c\u8be5Read\u64cd\u4f5c\u7684goroutine\u4e5f\u4f1a\u88ab\u6302\u8d77\u3002runtime\u4f1a\u76d1\u89c6\u8be5socket\uff0c\u76f4\u5230\u5176\u6709\u6570\u636e\u624d\u4f1a\u91cd\u65b0
\n\u8c03\u5ea6\u8be5socket\u5bf9\u5e94\u7684Goroutine\u5b8c\u6210read\u3002<\/p>\n
2 Socket\u4e2d\u6709\u90e8\u5206\u6570\u636e<\/p>\n
\u5982\u679csocket\u4e2d\u6709\u90e8\u5206\u6570\u636e\uff0c\u4e14\u957f\u5ea6\u5c0f\u4e8e\u4e00\u6b21Read\u64cd\u4f5c\u6240\u671f\u671b\u8bfb\u51fa\u7684\u6570\u636e\u957f\u5ea6\uff0c\u90a3\u4e48Read\u5c06\u4f1a\u6210\u529f\u8bfb\u51fa\u8fd9\u90e8\u5206\u6570\u636e\u5e76\u8fd4\u56de\uff0c\u800c\u4e0d\u662f\u7b49\u5f85\u6240\u6709\u671f\u671b\u6570\u636e\u5168\u90e8\u8bfb\u53d6\u540e\u518d\u8fd4\u56de\u3002<\/p>\n
3 Socket\u4e2d\u6709\u8db3\u591f\u6570\u636e<\/p>\n
\u5982\u679csocket\u4e2d\u6709\u6570\u636e\uff0c\u4e14\u957f\u5ea6\u5927\u4e8e\u7b49\u4e8e\u4e00\u6b21Read\u64cd\u4f5c\u6240\u671f\u671b\u8bfb\u51fa\u7684\u6570\u636e\u957f\u5ea6\uff0c\u90a3\u4e48Read\u5c06\u4f1a\u6210\u529f\u8bfb\u51fa\u8fd9\u90e8\u5206\u6570\u636e\u5e76\u8fd4\u56de\u3002<\/p>\n
4 Socket\u5173\u95ed<\/p>\n
\u5982\u679cclient\u7aef\u4e3b\u52a8\u5173\u95ed\u4e86socket\uff0c\u90a3\u4e48Server\u7684Read\u5206\u4e3a\u201c\u6709\u6570\u636e\u5173\u95ed\u201d\u548c\u201c\u65e0\u6570\u636e\u5173\u95ed\u201d\u3002<\/p>\n
\u201c\u6709\u6570\u636e\u5173\u95ed\u201d\u662f\u6307\u5728client\u5173\u95ed\u65f6\uff0csocket\u4e2d\u8fd8\u6709server\u7aef\u672a\u8bfb\u53d6\u7684\u6570\u636e\uff0cRead\u8fd4\u56de\u201cEOF error\u201c\u3002
\n\u201c\u65e0\u6570\u636e\u5173\u95ed\u201d\u60c5\u5f62\u4e0b\u7684\u7ed3\u679c\uff0c\u90a3\u5c31\u662fRead\u76f4\u63a5\u8fd4\u56deEOF error\u3002<\/p>\n
5 \u8bfb\u53d6\u64cd\u4f5c\u8d85\u65f6<\/p>\n
\u6709\u4e9b\u573a\u5408\u5bf9Read\u7684\u963b\u585e\u65f6\u95f4\u6709\u4e25\u683c\u9650\u5236\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4f1a\u53cd\u590d\u6267\u884c\u4e86\u591a\u6b21\uff0c\u6ca1\u80fd\u51fa\u73b0\u201c\u8bfb\u51fa\u90e8\u5206\u6570\u636e\u4e14\u8fd4\u56de\u8d85\u65f6\u9519\u8bef\u201d\u7684\u60c5\u51b5\u3002<\/p>\n
\u670d\u52a1\u7aef\u5199\u7684\u884c\u4e3a\u7279\u70b9<\/h2>\n
1 \u6210\u529f\u5199<\/p>\n
client\u7aef\u5728Write\u65f6\u5e76\u672a\u5224\u65adWrite\u7684\u8fd4\u56de\u503c\u3002
\n\u6240\u8c13\u201c\u6210\u529f\u5199\u201d\u6307\u7684\u5c31\u662fWrite\u8c03\u7528\u8fd4\u56de\u7684n\u4e0e\u9884\u671f\u8981\u5199\u5165\u7684\u6570\u636e\u957f\u5ea6\u76f8\u7b49\uff0c\u4e14error = nil\u3002<\/p>\n
2 \u5199\u963b\u585e<\/p>\n
TCP\u8fde\u63a5\u901a\u4fe1\u4e24\u7aef\u7684OS\u90fd\u4f1a\u4e3a\u8be5\u8fde\u63a5\u4fdd\u7559\u6570\u636e\u7f13\u51b2\uff0c\u4e00\u7aef\u8c03\u7528Write\u540e\uff0c\u5b9e\u9645\u4e0a\u6570\u636e\u662f\u5199\u5165\u5230OS\u7684\u534f\u8bae\u6808\u7684\u6570\u636e\u7f13\u51b2\u7684\u3002
\nTCP\u662f\u5168\u53cc\u5de5\u901a\u4fe1\uff0c\u56e0\u6b64\u6bcf\u4e2a\u65b9\u5411\u90fd\u6709\u72ec\u7acb\u7684\u6570\u636e\u7f13\u51b2\u3002\u5f53
\n\u53d1\u9001\u65b9\u5c06\u5bf9\u65b9\u7684\u63a5\u6536\u7f13\u51b2\u533a\u4ee5\u53ca\u81ea\u8eab\u7684\u53d1\u9001\u7f13\u51b2\u533a\u5199\u6ee1\u540e\uff0cWrite\u5c31\u4f1a\u963b\u585e\u3002\u5f53\u63a5\u6536\u65b9\u8bfb\u53d6\u7684\u65f6\u5019\uff0c\u7f13\u51b2\u533a\u817e\u51fa\u4e86\u7a7a\u95f4\uff0c\u5ba2\u6237\u7aef\u5c31\u53c8\u53ef\u4ee5\u5199\u5165\u4e86\u3002<\/p>\n
3 \u5199\u5165\u90e8\u5206\u6570\u636e<\/p>\n
Write\u64cd\u4f5c\u5b58\u5728\u5199\u5165\u90e8\u5206\u6570\u636e\u7684\u60c5\u51b5\uff0c\u6b64\u65f6\u670d\u52a1\u7aef\u5173\u95ed\uff0c\u4f46\u662f\u5199\u5165\u7684\u7f13\u51b2\u533a\u4e0d\u4f1a\u963b\u585e\u3002\u800c\u662f\u540e\u7eed\u53c8\u5199\u5165\u90e8\u5206\u6570\u636e\u540e\u53d1\u751f\u4e86\u963b\u585e\uff0c\u7a0b\u5e8f\u9700\u8981\u5bf9\u8fd9\u90e8\u5206\u5199\u5165\u7684\u90e8\u5206\u5b57\u8282\u505a\u7279\u5b9a\u5904\u7406\u3002<\/p>\n
4 \u5199\u5165\u8d85\u65f6<\/p>\n
\u5982\u679c\u975e\u8981\u7ed9Write\u589e\u52a0\u4e00\u4e2a\u671f\u9650\uff0c\u90a3\u6211\u4eec\u53ef\u4ee5\u8c03\u7528SetWriteDeadline<\/code>\u65b9\u6cd5\u3002
\n\u53ef\u4ee5\u770b\u5230\u5728\u5199\u5165\u8d85\u65f6\u65f6\uff0c\u4f9d\u65e7\u5b58\u5728\u90e8\u5206\u6570\u636e\u5199\u5165\u7684\u60c5\u51b5\u3002<\/p>\n
Socket\u5c5e\u6027<\/h2>\n
\u539f\u751fSocket API\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684sockopt\u8bbe\u7f6e\u63a5\u53e3\uff0c\u4f46Golang\u6709\u81ea\u5df1\u7684\u7f51\u7edc\u67b6\u6784\u6a21\u578b\uff0cgolang\u63d0\u4f9b\u7684socket\u5fc5\u8981\u7684\u5c5e\u6027\u8bbe\u7f6e\u3002<\/p>\n
\n
 <\/p>\n
SetKeepAlive \u662f\u5426\u5f00\u542f\u957f\u8fde\u63a5\r\nSetKeepAlivePeriod \u8bbe\u7f6e\u957f\u8fde\u63a5\u7684\u5468\u671f\uff0c\u8d85\u51fa\u4f1a\u65ad\u5f00\r\nSetLinger \u8bbe\u5b9a\u5f53\u8fde\u63a5\u4e2d\u4ecd\u6709\u6570\u636e\u7b49\u5f85\u53d1\u9001\u6216\u63a5\u53d7\u65f6\u7684Close\u65b9\u6cd5\u7684\u884c\u4e3a\u3002\r\nSetNoDelay \uff08\u9ed8\u8ba4no delay\uff09 \u8bbe\u5b9a\u64cd\u4f5c\u7cfb\u7edf\u662f\u5426\u5e94\u8be5\u5ef6\u8fdf\u6570\u636e\u5305\u4f20\u9012\uff0c\u4ee5\u4fbf\u53d1\u9001\u66f4\u5c11\u7684\u6570\u636e\u5305\uff08Nagle's\u7b97\u6cd5\uff09\u3002\u9ed8\u8ba4\u4e3a\u771f\uff0c\u5373\u6570\u636e\u5e94\u8be5\u5728Write\u65b9\u6cd5\u540e\u7acb\u523b\u53d1\u9001\u3002<\/span>\r\nSetWriteBuffer \u8fde\u63a5\u7684\u7cfb\u7edf\u53d1\u9001\u7f13\u51b2\r\nSetReadBuffer \u8fde\u63a5\u7684\u7cfb\u7edf\u63a5\u6536\u7f13\u51b2\r\n<\/code><\/pre>\n<\/div>\n
\u5173\u95ed\u8fde\u63a5<\/h2>\n
\u7531\u4e8esocket\u662f\u5168\u53cc\u5de5\u7684\uff0cclient\u548cserver\u7aef\u5728\u5df1\u65b9\u5df2\u5173\u95ed\u7684socket\u548c\u5bf9\u65b9\u5173\u95ed\u7684socket\u4e0a\u64cd\u4f5c\u7684\u7ed3\u679c\u6709\u4e0d\u540c\u3002<\/p>\n
\u4ececlient\u7684\u7ed3\u679c\u6765\u770b\uff0c\u5728\u5df1\u65b9\u5df2\u7ecf\u5173\u95ed\u7684socket\u4e0a\u518d\u8fdb\u884cread\u548cwrite\u64cd\u4f5c\uff0c\u4f1a\u5f97\u5230\u201duse of closed network connection\u201d error\uff1b<\/p>\n
\u4eceserver1\u7684\u7ed3\u679c\u6765\u770b\uff0c\u5728\u5bf9\u65b9\u5173\u95ed\u7684socket\u4e0a\u6267\u884cread\u64cd\u4f5c\u4f1a\u5f97\u5230EOF error\uff0c\u4f46write\u64cd\u4f5c\u4f1a\u6210\u529f\uff0c\u56e0\u4e3a\u6570\u636e\u4f1a\u6210\u529f\u5199\u5165\u5df1\u65b9\u7684\u5185\u6838socket\u7f13\u51b2\u533a\u4e2d\uff0c
\n\u5373\u4fbf\u6700\u7ec8\u53d1\u4e0d\u5230\u5bf9\u65b9socket\u7f13\u51b2\u533a\u4e86\uff0c\u56e0\u4e3a\u5df1\u65b9socket\u5e76\u672a\u5173\u95ed\u3002\u56e0\u6b64\u5f53\u53d1\u73b0\u5bf9\u65b9socket\u5173\u95ed\u540e\uff0c\u5df1\u65b9\u5e94\u8be5\u6b63\u786e\u5408\u7406\u5904\u7406\u81ea\u5df1\u7684socket\uff0c\u518d\u7ee7\u7eedwrite\u5df2\u7ecf\u65e0\u4efb\u4f55\u610f\u4e49\u4e86\u3002<\/p>\n
\u53c2\u8003 Go\u8bed\u8a00TCP Socket\u7f16\u7a0b<\/a><\/p>\n
Tcp\u7f16\u7a0b\u5e38\u89c1\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5\u603b\u7ed3<\/h1>\n
\u95ee\u98981\u3001\u7c98\u5305\u95ee\u9898<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff1aTCP\u63d0\u4f9b\u4e86\u5f3a\u5236\u6570\u636e\u7acb\u5373\u4f20\u9001\u7684\u64cd\u4f5c\u6307\u4ee4push\uff0cTCP\u8f6f\u4ef6\u6536\u5230\u8be5\u64cd\u4f5c\u6307\u4ee4\u540e\uff0c\u5c31\u7acb\u5373\u5c06\u672c\u6bb5\u6570\u636e\u53d1\u9001\u51fa\u53bb\uff0c\u800c\u4e0d\u5fc5\u7b49\u5f85\u53d1\u9001\u7f13\u51b2\u533a\u6ee1\uff1b<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e8c\uff1a\u53d1\u9001\u56fa\u5b9a\u957f\u5ea6\u7684\u6d88\u606f<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e09\uff1a\u628a\u6d88\u606f\u7684\u5c3a\u5bf8\u4e0e\u6d88\u606f\u4e00\u5757\u53d1\u9001<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u56db\uff1a\u53cc\u65b9\u7ea6\u5b9a\u6bcf\u6b21\u4f20\u9001\u7684\u5927\u5c0f<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e94\uff1a\u53cc\u65b9\u7ea6\u5b9a\u4f7f\u7528\u7279\u6b8a\u6807\u8bb0\u6765\u533a\u5206\u6d88\u606f\u95f4\u9694<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u516d\uff1a\u6807\u51c6\u534f\u8bae\u6309\u534f\u8bae\u89c4\u5219\u5904\u7406\uff0c\u5982Sip\u534f\u8bae<\/p>\n
\u95ee\u98982\u3001\u5b57\u7b26\u4e32\u7f16\u7801\u95ee\u9898<\/p>\n
\u5c06\u4e2d\u6587\u5b57\u7b26\u4e32\u7528utf8\u7f16\u7801\u683c\u5f0f\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u53d1\u9001\u65f6\uff0c\u4e00\u4e2a\u4e2d\u6587\u5b57\u7b26\u53ef\u80fd\u4f1a\u5360\u75282\uff5e4\u4e2a\u5b57\u8282\uff08\u5047\u8bbe\u4e3a3\u4e2a\u5b57\u8282\uff09\uff0c\u8fd93\u4e2a\u5b57\u8282\u53ef\u80fd\u52063\u6b21\u63a5\u6536\uff0c\u63a5\u6536\u7aef\u6bcf\u6b21\u63a5\u6536\u5b8c\u540e\u7528utf8\u7f16\u7801\u683c\u5f0f\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e71\u7801\uff0c\u5e76\u5bfc\u81f4\u63a5\u6536\u957f\u5ea6\u8ba1\u7b97\u9519\u8bef\u7684\u60c5\u51b5\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff1a\u4ee5\u5b57\u8282\u6570\u505a\u4e3a\u6d88\u606f\u957f\u5ea6\u7684\u8ba1\u7b97\u5355\u4f4d\uff0c\u800c\u4e0d\u662f\u5b57\u7b26\u4e2a\u6570\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e8c\uff1a\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u90fd\u91c7\u7528unicode\u7f16\u7801\u683c\u5f0f\u3002<\/p>\n
\u95ee\u98983\u3001\u957f\u8fde\u63a5\u7684\u4fdd\u6d3b\u95ee\u9898<\/p>\n
\u6807\u51c6TCP\u5c42\u534f\u8bae\u91cc\u628a\u5bf9\u65b9\u8d85\u65f6\u8bbe\u4e3a2\u5c0f\u65f6\uff0c\u82e5\u670d\u52a1\u5668\u7aef\u8d85\u8fc7\u4e862\u5c0f\u65f6\u8fd8\u6ca1\u6536\u5230\u5ba2\u6237\u7684\u4fe1\u606f\uff0c\u5b83\u5c31\u53d1\u9001\u63a2\u6d4b\u62a5\u6587\u6bb5\uff0c\u82e5\u53d1\u9001\u4e8610\u4e2a\u63a2\u6d4b\u62a5\u6587\u6bb5\uff08\u6bcf\u4e00\u4e2a\u76f8\u969475S\uff09\u8fd8\u6ca1\u6709\u6536\u5230\u54cd\u5e94\uff0c\u5c31\u5047\u5b9a\u5ba2\u6237\u51fa\u4e86\u6545\u969c\uff0c\u5e76\u7ec8\u6b62\u8fd9\u4e2a\u8fde\u63a5\u3002\u56e0\u6b64\u5e94\u5bf9tcp\u957f\u8fde\u63a5\u8fdb\u884c\u4fdd\u6d3b\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u5f02\u6b65\u901a\u4fe1\u65f6\u4f1a\u9047\u5230\u7684\u95ee\u9898\uff1a<\/p>\n
\u95ee\u98984\u3001\u7f13\u51b2\u533a\u810f\u6570\u636e\u95ee\u9898<\/p>\n
\u540c\u6b65\u53d1\u9001\u7684\u62f7\u8d1d\uff0c\u662f\u76f4\u63a5\u62f7\u8d1d\u6570\u636e\u5230\u57fa\u7840\u7cfb\u7edf\u7f13\u51b2\u533a\uff0c\u62f7\u8d1d\u5b8c\u6210\u540e\u8fd4\u56de\uff1b<\/p>\n
\u5f02\u6b65\u53d1\u9001\u6d88\u606f\u7684\u62f7\u8d1d\uff0c\u662f\u5c06Socket\u81ea\u5e26\u7684Buffer\u7a7a\u95f4\u5185\u7684\u6240\u6709\u6570\u636e\uff0c\u62f7\u8d1d\u5230\u57fa\u7840\u7cfb\u7edf\u53d1\u9001\u7f13\u51b2\u533a\uff0c\u5e76\u7acb\u5373\u8fd4\u56de\uff1b<\/p>\n
\u56e0\u6b64\u5f02\u6b65\u53d1\u9001\u65f6\u7f13\u51b2\u533a\u8bbe\u7f6e\u4e0d\u597d\u4f1a\u5bfc\u81f4\u63a5\u6536\u5230\u810f\u6570\u636e\u7684\u95ee\u9898\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\u7b2c\u4e00\u6b21\u53d1\u9001\u6570\u636e\uff1a1234567890<\/p>\n
\u7b2c\u4e00\u6b21\u63a5\u53d7\u6570\u636e\uff1a1234567890<\/p>\n
\u7b2c\u4e8c\u6b21\u53d1\u9001\u6570\u636e\uff1aabc<\/p>\n
\u7b2c\u4e8c\u6b21\u63a5\u53d7\u6570\u636e\uff1aabc4567890<\/p>\n
\u8bf7\u53c2\u8003\uff1ahttp:\/\/www.cnblogs.com\/tianzhiliang\/archive\/2010\/09\/08\/1821623.html<\/a><\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff1a\u5c06\u7f13\u51b2\u533a\u7684\u5927\u5c0f\u8bbe\u7f6e\u4e3a\u5b9e\u9645\u53d1\u9001\u6570\u636e\u7684\u5927\u5c0f\u3002<\/p>\n
\u95ee\u98985\u3001\u5185\u5b58\u788e\u7247\u95ee\u9898<\/p>\n
\u9891\u7e41\u7684\u7533\u8bf7\u7f13\u51b2\u533a\u4f1a\u5bfc\u81f4\u5185\u5b58\u788e\u7247\u7684\u95ee\u9898\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528\u5bf9\u8c61\u6c60\u548c\u5185\u5b58\u6c60\u3002<\/p>\n
\u8bf7\u53c2\u8003MSDN\uff1ahttp:\/\/msdn.microsoft.com\/zh-cn\/library\/bb517542(v=vs.100).aspx<\/a><\/p>\n
http:\/\/msdn.microsoft.com\/zh-cn\/library\/system.net.sockets.socketasynceventargs.socketasynceventargs(v=vs.100).aspx<\/a><\/p>\n
\u95ee\u98986\u3001\u4e71\u5e8f\u95ee\u9898<\/p>\n
\u591a\u4e2a\u7ebf\u7a0b\u4f7f\u7528\u5f02\u6b65\u901a\u4fe1\u65b9\u5f0f\u5411\u540c\u4e00\u4e2a\u63a5\u6536\u7aef(socket)\u540c\u65f6\u53d1\u9001\u6570\u636e\uff0c\u4f1a\u5bfc\u81f4\u63a5\u6536\u7aef\u63a5\u6536\u7684\u6570\u636e\u6df7\u4e71\u3002\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\u7ebf\u7a0b1\u7b2c\u4e00\u6b21\u53d1\u9001\uff1a123456789\uff0c\u5047\u8bbe\u672a\u53d1\u9001\u5b8c\uff0c\u53ea\u53d1\u9001\u4e86123<\/p>\n
\u7ebf\u7a0b2\u7b2c\u4e00\u6b21\u53d1\u9001\uff1aabcdefgh\uff0c\u5047\u8bbe\u672a\u53d1\u9001\u5b8c\uff0c\u53ea\u53d1\u9001\u4e86abc<\/p>\n
\u7ebf\u7a0b1\u7b2c\u4e8c\u6b21\u53d1\u9001\uff1a456789\uff0c\u53d1\u9001\u5b8c\u6210<\/p>\n
\u7ebf\u7a0b2\u7b2c\u4e8c\u6b21\u53d1\u9001\uff1adefgh\uff0c\u53d1\u9001\u5b8c\u6210<\/p>\n
\u63a5\u6536\u7aef\u6700\u7ec8\u63a5\u6536\u7684\u6570\u636e\u4e3a\uff1a123abc456789defgh\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6cd5\u4e00\uff1a\u4e00\u4e2a\u8fde\u63a5\u7684\u53d1\u9001\u7aef\u7ebf\u7a0b\u6392\u961f\u53d1\u9001\u6570\u636e\u3002<\/p>\n
\u4ee3\u7801\u793a\u4f8b<\/h2>\n
\u670d\u52a1\u7aef\uff1a<\/p>\n
\n
 <\/p>\n
package<\/span> main\r\n\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"net\"<\/span>\r\n    \"strings\"<\/span>\r\n)<\/span>\r\n\r\n\/\/ \u8bfb\u53d6\u6570\u636e<\/span>\r\nfunc<\/span> handleConnection<\/span>(<\/span>conn net.<\/span>Conn)<\/span> {<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        buf :=<\/span> make<\/span>(<\/span>[<\/span>]<\/span>byte<\/span>,<\/span> 1024<\/span>)<\/span>\r\n        if<\/span> _<\/span>,<\/span>err :=<\/span> conn.<\/span>Read<\/span>(<\/span>buf)<\/span>;<\/span>err ==<\/span> nil<\/span> {<\/span>\r\n            result :=<\/span> strings.<\/span>Replace<\/span>(<\/span>string<\/span>(<\/span>buf)<\/span>,<\/span>\"\\n\"<\/span>,<\/span>\"\"<\/span>,<\/span>1<\/span>)<\/span>\r\n            fmt.<\/span>Println<\/span>(<\/span>result)<\/span>\r\n        }<\/span>else<\/span>{<\/span>\r\n            fmt.<\/span>Println<\/span>(<\/span>err)<\/span>\r\n        }<\/span>\r\n\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>(<\/span>)<\/span> {<\/span>\r\n\r\n    \/*\r\n    Listen: \u8fd4\u56de\u5728\u4e00\u4e2a\u672c\u5730\u7f51\u7edc\u5730\u5740laddr\u4e0a\u76d1\u542c\u7684Listener\u3002\u7f51\u7edc\u7c7b\u578b\u53c2\u6570net\u5fc5\u987b\u662f\u9762\u5411\u6d41\u7684\u7f51\u7edc\uff1a \"tcp\"\u3001\"tcp4\"\u3001\"tcp6\"\u3001\"unix\"\u6216\"unixpacket\"\u3002\r\n    *\/<\/span>\r\n    listener,<\/span> err :=<\/span> net.<\/span>Listen<\/span>(<\/span>\"tcp\"<\/span>,<\/span> \"localhost:9999\"<\/span>)<\/span>\r\n    if<\/span> err !=<\/span> nil<\/span> {<\/span>\r\n        fmt.<\/span>Println<\/span>(<\/span>\"listen error:\"<\/span>,<\/span> err)<\/span>\r\n        return<\/span>\r\n    }<\/span>\r\n\r\n    \/\/todo \u9650\u901f\u7b97\u6cd5<\/span>\r\n    fmt.<\/span>Println<\/span>(<\/span>\"server listen success\"<\/span>)<\/span>\r\n    for<\/span> {<\/span>\r\n        \/\/\u7b49\u5f85\u5ba2\u6237\u7aef\u63a5\u5165<\/span>\r\n        conn,<\/span> err :=<\/span> listener.<\/span>Accept<\/span>(<\/span>)<\/span>\r\n        if<\/span> err !=<\/span> nil<\/span> {<\/span>\r\n            fmt.<\/span>Println<\/span>(<\/span>\"accept error:\"<\/span>,<\/span> err)<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n        \/\/ \u4f7f\u7528\u534f\u7a0b<\/span>\r\n        go<\/span> handleConnection<\/span>(<\/span>conn)<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n<\/div>\n
\u5ba2\u6237\u7aef:<\/p>\n
\n
 <\/p>\n
package<\/span> main\r\n\r\nimport<\/span> (<\/span>\r\n    \"bufio\"<\/span>\r\n    \"fmt\"<\/span>\r\n    \"log\"<\/span>\r\n    \"net\"<\/span>\r\n    \"os\"<\/span>\r\n    \"strings\"<\/span>\r\n    \"time\"<\/span>\r\n)<\/span>\r\n\r\nfunc<\/span> main<\/span>(<\/span>)<\/span> {<\/span>\r\n\r\n    \/\/\u963b\u585eDial<\/span>\r\n    \/*\r\n    Dial:\r\n        \u5728\u7f51\u7edcnetwork\u4e0a\u8fde\u63a5\u5730\u5740address\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2aConn\u63a5\u53e3\u3002\r\n        \u53ef\u7528\u7684\u7f51\u7edc\u7c7b\u578b\u6709\uff1a\"tcp\"\u3001\"tcp4\"\u3001\"tcp6\"\u3001\"udp\"\u3001\"udp4\"\u3001\"udp6\"\u3001\"ip\"\u3001\"ip4\"\u3001\"ip6\"\u3001\"unix\"\u3001\"unixgram\"\u3001\"unixpacket\"\r\n        \u5bf9TCP\u548cUDP\u7f51\u7edc\uff0c\u5730\u5740\u683c\u5f0f\u662fhost:port\u6216[host]:port\r\n    *\/<\/span>\r\n    \/\/conn, err := net.Dial(\"tcp\", \"localhost:7777\")<\/span>\r\n    \/\/\u8d85\u65f6<\/span>\r\n    conn,<\/span> err :=<\/span> net.<\/span>DialTimeout<\/span>(<\/span>\"tcp\"<\/span>,<\/span> \"localhost:9999\"<\/span>,<\/span>time.<\/span>Second*<\/span>2<\/span>)<\/span>\r\n    if<\/span> err !=<\/span> nil<\/span> {<\/span>\r\n        log.<\/span>Println<\/span>(<\/span>\"dial error:\"<\/span>,<\/span> err)<\/span>\r\n        return<\/span>\r\n    }<\/span>\r\n    fmt.<\/span>Println<\/span>(<\/span>\"client dial success\"<\/span>)<\/span>\r\n\r\n    inputReader :=<\/span> bufio.<\/span>NewReader<\/span>(<\/span>os.<\/span>Stdin)<\/span>\r\n    for<\/span> {<\/span>\r\n\r\n        fmt.<\/span>Println<\/span>(<\/span>\"Please enter a message? 'quit' exit\"<\/span>)<\/span>\r\n        \/\/\u8bfb\u53d6\u6d88\u606f<\/span>\r\n        input,<\/span> _<\/span> :=<\/span> inputReader.<\/span>ReadString<\/span>(<\/span>'\\n'<\/span>)<\/span>\r\n        msg :=<\/span> strings.<\/span>Trim<\/span>(<\/span>input,<\/span> \"\\r\\n\"<\/span>)<\/span>\r\n        \/\/quit \u9000\u51fa<\/span>\r\n        if<\/span> msg ==<\/span> \"quit\"<\/span> {<\/span>\r\n            fmt.<\/span>Println<\/span>(<\/span>\"quit\"<\/span>)<\/span>\r\n            conn.<\/span>Write<\/span>(<\/span>[<\/span>]<\/span>byte<\/span>(<\/span>\"client quit \"<\/span>)<\/span>)<\/span>\r\n            return<\/span>\r\n        }<\/span>\r\n        _<\/span>,<\/span> err =<\/span> conn.<\/span>Write<\/span>(<\/span>[<\/span>]<\/span>byte<\/span>(<\/span> msg)<\/span>)<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n\r\n<\/code><\/pre>\n<\/div>\n
\u539f\u6587\u5730\u5740 \u6253\u5f00\u94fe\u63a5 TCP Socket<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[122],"class_list":["post-4048","post","type-post","status-publish","format-standard","hentry","tag-06-godocker"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4048"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4048\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\u53c2\u8003 Tcp\u7f16\u7a0b\u5e38\u89c1\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5\u603b\u7ed3<\/a><\/p>\n<\/article>\n","protected":false},"excerpt":{"rendered":"