{"id":15444,"date":"2024-11-17T21:11:33","date_gmt":"2024-11-17T13:11:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=15444"},"modified":"2024-11-17T21:11:33","modified_gmt":"2024-11-17T13:11:33","slug":"go%e4%b8%adnet%e5%8c%85%e4%b8%ad%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15444\/","title":{"rendered":"Go\u4e2dnet\u5305\u4e2d\u7684\u65b9\u6cd5"},"content":{"rendered":"

\u672c\u6587\u7ae0\u662f\u5b66\u4e60Go\u4e2dnet\u5305\u7684\u4e00\u7bc7\u7b14\u8bb0\uff0c\u8bb0\u5f55 net \u5305\u7684\u4e00\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\u3002<\/p>\n

\u00a01\u3001func SplitHostPort(hostport string) (host, port string, err error)<\/strong><\/p>\n

\u51fd\u6570\u5c06\u683c\u5f0f\u4e3a\u201dhost:port\u201d\u3001\u201d[host]:port\u201d\u6216\u201d[ipv6-host%zone]:port\u201d\u7684\u7f51\u7edc\u5730\u5740\u5206\u5272\u4e3ahost\u6216ipv6-host%zone\u548cport\u4e24\u4e2a\u90e8\u5206\u3002<\/p>\n

 <\/p>\n

2\u3001func JoinHostPort(host, port string) string<\/strong><\/p>\n

\u51fd\u6570\u5c06host\u548cport\u5408\u5e76\u4e3a\u4e00\u4e2a\u7f51\u7edc\u5730\u5740\u3002\u4e00\u822c\u683c\u5f0f\u4e3a\u201dhost:port\u201d\uff1b\u5982\u679chost\u542b\u6709\u5192\u53f7\u6216\u767e\u5206\u53f7\uff0c\u683c\u5f0f\u4e3a\u201d[host]:port\u201d\u3002<\/p>\n

\u00a03\u3001type HardwareAddr []byte
\n<\/strong><\/p>\n

HardwareAddr\u7c7b\u578b\u4ee3\u8868\u4e00\u4e2a\u786c\u4ef6\u5730\u5740\uff08MAC\u5730\u5740\uff09<\/p>\n

3.1\u3001func ParseMAC(s string) (hw HardwareAddr, err error)<\/strong><\/p>\n

ParseMAC\u51fd\u6570\u4f7f\u7528\u5982\u4e0b\u683c\u5f0f\u89e3\u6790\u4e00\u4e2aIEEE 802 MAC-48\u3001EUI-48\u6216EUI-64\u786c\u4ef6\u5730\u5740\uff1a<\/p>\n

01:23:45:67:89:ab\r\n01:23:45:67:89:ab:cd:ef\r\n01-23-45-67-89-ab\r\n01-23-45-67-89-ab-cd-ef\r\n0123.4567.89ab\r\n0123.4567.89ab.cdef<\/pre>\n
3.2\u3001func (a HardwareAddr) String() string<\/strong><\/p>\n
4\u3001\u7f51\u5361\u7684\u72b6\u6001\u6807\u8bc6<\/strong><\/p>\n
type Flags uint\r\nconst (\r\n\u00a0\u00a0\u00a0 FlagUp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Flags = 1 << iota \/\/ \u63a5\u53e3\u5728\u6d3b\u52a8\u72b6\u6001  1\r\n\u00a0\u00a0\u00a0 FlagBroadcast\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u652f\u6301\u5e7f\u64ad    2 \r\n\u00a0\u00a0\u00a0 FlagLoopback\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u662f\u73af\u56de\u7684    4\r\n\u00a0\u00a0\u00a0 FlagPointToPoint\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u662f\u70b9\u5bf9\u70b9\u7684  8 \u53ef\u4ee5\u7406\u89e3\u4e3a\u5355\u64ad\r\n\u00a0\u00a0\u00a0 FlagMulticast\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u652f\u6301\u7ec4\u64ad    16 \u548c\u591a\u64ad\u540c\u4e49\r\n)<\/pre>\n
var flagNames = []string{\r\n   \"up\",\r\n   \"broadcast\",\r\n   \"loopback\",\r\n   \"pointtopoint\",\r\n   \"multicast\",\r\n}<\/pre>\n
4.1 func (f Flags) String() string<\/strong><\/p>\n
5\u3001\u7f51\u5361\u7684\u76f8\u5173\u7684\u65b9\u6cd5<\/strong><\/p>\n
type Interface struct {\r\n\u00a0\u00a0\u00a0 Index\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 int\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u7d22\u5f15\uff0c>=1\u7684\u6574\u6570\r\n\u00a0\u00a0\u00a0 MTU\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 int\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u6700\u5927\u4f20\u8f93\u5355\u5143\r\n\u00a0\u00a0\u00a0 Name\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 string\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u540d\uff0c\u4f8b\u5982\"en0\"\u3001\"lo0\"\u3001\"eth0.100\"\r\n\u00a0\u00a0\u00a0 HardwareAddr HardwareAddr \/\/ \u786c\u4ef6\u5730\u5740\uff0cIEEE MAC-48\u3001EUI-48\u6216EUI-64\u683c\u5f0f\r\n\u00a0\u00a0\u00a0 Flags\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Flags\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ \u63a5\u53e3\u7684\u5c5e\u6027\uff0c\u4f8b\u5982FlagUp\u3001FlagLoopback\u3001FlagMulticast\r\n}<\/pre>\n
5.1\u3001func Interfaces() ([]Interface, error)<\/strong><\/p>\n
Interfaces\u8fd4\u56de\u8be5\u7cfb\u7edf\u7684\u7f51\u7edc\u63a5\u53e3\u5217\u8868\u3002<\/p>\n
\u4f8b\u5982\uff1a(\u8f93\u51fa\u7ed3\u679c\u4e3a\u4e86\u73b0\u5b9e\u65b9\u4fbf\uff0c\u4f7f\u7528json\u8f93\u51fa)<\/p>\n
[\r\n\u00a0 {\r\n\u00a0\u00a0\u00a0 \"Index\": 1,\r\n\u00a0\u00a0\u00a0 \"MTU\": 16384,\r\n\u00a0\u00a0\u00a0 \"Name\": \"lo0\",\r\n\u00a0\u00a0\u00a0 \"HardwareAddr\": null,\r\n\u00a0\u00a0\u00a0 \"Flags\": 21 \/\/\u76f8\u5f53\u4e8e up|loopback|multicast \uff0c\u7f51\u5361\u4f7f\u7528\u4e2d\uff0c\u652f\u6301\u73af\u56de\u3001\u7ec4\u64ad\r\n\u00a0 },\r\n\u00a0 {\r\n\u00a0\u00a0\u00a0 \"Index\": 9,\r\n\u00a0\u00a0\u00a0 \"MTU\": 1484,\r\n\u00a0\u00a0\u00a0 \"Name\": \"awdl0\",\r\n\u00a0\u00a0\u00a0 \"HardwareAddr\": \"yvQEMXJ1\",\r\n\u00a0\u00a0\u00a0 \"Flags\": 18 \/\/\u76f8\u5f53\u4e8ebroadcast|multicast\uff0c\u7f51\u5361\u672a\u4f7f\u7528\uff0c\u652f\u6301\u5e7f\u64ad\u3001\u7ec4\u64ad\r\n\u00a0 },\r\n\u00a0 {\r\n\u00a0\u00a0\u00a0 \"Index\": 5,\r\n\u00a0\u00a0\u00a0 \"MTU\": 1500,\r\n\u00a0\u00a0\u00a0 \"Name\": \"en4\",\r\n\u00a0\u00a0\u00a0 \"HardwareAddr\": \"aFs1niJI\",\r\n\u00a0\u00a0\u00a0 \"Flags\": 19 \/\/\u76f8\u5f53\u4e8e up|broadcast|multicast\uff0c\u7f51\u5361\u4f7f\u7528\u4e2d\uff0c\u652f\u6301\u5e7f\u64ad\u3001\u7ec4\u64ad\r\n\u00a0 }\r\n]<\/pre>\n
5.2 \u3001func InterfaceByIndex(index int) (*Interface, error)<\/strong><\/p>\n
InterfaceByIndex\u8fd4\u56de\u6307\u5b9a\u7d22\u5f15\u7684\u7f51\u7edc\u63a5\u53e3\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
interfaces,_ := net.InterfaceByIndex(5)\r\njson , _ := json.Marshal(interfaces)\r\n\r\n\u8f93\u51fa:\r\n{\r\n\u00a0 \"Index\": 5,\r\n\u00a0 \"MTU\": 1500,\r\n\u00a0 \"Name\": \"en4\",\r\n\u00a0 \"HardwareAddr\": \"aFs1niJI\",\r\n\u00a0 \"Flags\": 19\r\n}<\/pre>\n
5.3\u3001func InterfaceByName(name string) (*Interface, error)<\/strong><\/p>\n
InterfaceByName\u8fd4\u56de\u6307\u5b9a\u540d\u5b57\u7684\u7f51\u7edc\u63a5\u53e3<\/p>\n
interfaces,_ := net.InterfaceByName(\"awdl0\")\r\njson , _ := json.Marshal(interfaces)\r\n\r\n\u8f93\u51fa\uff1a\r\n{\r\n\u00a0 \"Index\": 9,\r\n\u00a0 \"MTU\": 1484,\r\n\u00a0 \"Name\": \"awdl0\",\r\n\u00a0 \"HardwareAddr\": \"yvQEMXJ1\",\r\n\u00a0 \"Flags\": 18\r\n}<\/pre>\n
5.4\u3001func (ifi *Interface) Addrs() ([]Addr, error)<\/strong><\/p>\n
Addrs\u65b9\u6cd5\u8fd4\u56de\u7f51\u7edc\u63a5\u53e3ifi\u7684\u4e00\u6216\u591a\u4e2a\u63a5\u53e3\u5730\u5740\u3002<\/p>\n
inter,_ := net.InterfaceByIndex(5)\r\naddrs, _ := inter.Addrs()\r\nfmt.Println(addrs)\r\n\r\n\u8f93\u51fa\uff1a\r\n[fe80::6a5b:35ff:fe9e:2248\/64 10.1.81.38\/23]<\/pre>\n
5.5\u3001func (ifi *Interface) MulticastAddrs() ([]Addr, error)<\/strong><\/p>\n
MulticastAddrs\u8fd4\u56de\u7f51\u7edc\u63a5\u53e3ifi\u52a0\u5165\u7684\u591a\u64ad\u7ec4\u5730\u5740\u3002<\/p>\n
inter,_ := net.InterfaceByIndex(5)\r\naddrs, _ := inter.MulticastAddrs()\r\njson , _ := json.Marshal(addrs)\r\nfmt.Fprintf(c.Writer, string(json))\r\n\r\n\u8f93\u51fa\uff1a\r\n[\r\n\u00a0 {\r\n\u00a0\u00a0\u00a0 \"IP\": \"224.0.0.251\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 }, {\r\n\u00a0\u00a0\u00a0 \"IP\": \"ff02::fb\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 },{\r\n\u00a0\u00a0\u00a0 \"IP\": \"224.0.0.1\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 },{\r\n\u00a0\u00a0\u00a0 \"IP\": \"ff01::1\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 }, {\r\n\u00a0\u00a0\u00a0 \"IP\": \"ff02::2:ff4d:9ef2\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 }, {\r\n\u00a0\u00a0\u00a0 \"IP\": \"ff02::1\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 }, {\r\n\u00a0\u00a0\u00a0 \"IP\": \"ff02::1:ff9e:2248\",\r\n\u00a0\u00a0\u00a0 \"Zone\": \"\"\r\n\u00a0 }]<\/pre>\n
6\u3001\u7f51\u7edc\u7ec8\u7aef<\/strong><\/p>\n
type Addr interface {\r\n\u00a0\u00a0\u00a0 Network() string \/\/ \u7f51\u7edc\u540d\r\n\u00a0\u00a0\u00a0 String() string\u00a0 \/\/ \u5b57\u7b26\u4e32\u683c\u5f0f\u7684\u5730\u5740\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u7ae0\u662f\u5b66\u4e60Go\u4e2dnet\u5305\u7684\u4e00\u7bc7\u7b14\u8bb0\uff0c\u8bb0\u5f55 net \u5305\u7684\u4e00\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\u3002 \u00a01\u3001func SplitHostPort(hostport string) (host, port string, err error) \u51fd\u6570\u5c06\u683c\u5f0f\u4e3a\u201dhost:port\u201d\u3001\u201d[host]:port\u201d\u6216\u201d[ipv6-host%zone]:port\u201d\u7684\u7f51\u7edc\u5730\u5740\u5206\u5272\u4e3ahost\u6216ipv6-host%zone\u548cport\u4e24\u4e2a\u90e8\u5206\u3002   2\u3001func JoinHostPort(host, port string) string \u51fd\u6570\u5c06host\u548cport\u5408\u5e76\u4e3a\u4e00\u4e2a\u7f51\u7edc\u5730\u5740\u3002\u4e00\u822c\u683c\u5f0f\u4e3a\u201dhost:port\u201d\uff1b\u5982\u679chost\u542b\u6709\u5192\u53f7\u6216\u767e\u5206\u53f7\uff0c\u683c\u5f0f\u4e3a\u201d[host]:port\u201d\u3002 \u00a03\u3001type HardwareAddr []byte HardwareAddr\u7c7b\u578b\u4ee3\u8868\u4e00\u4e2a\u786c\u4ef6\u5730\u5740\uff08MAC\u5730\u5740\uff09 3.1\u3001func ParseMAC(s string) (hw HardwareAddr, err error) ParseMAC\u51fd\u6570\u4f7f\u7528\u5982\u4e0b\u683c\u5f0f\u89e3\u6790\u4e00\u4e2aIEEE 802 MAC-48\u3001EUI-48\u6216EUI-64\u786c\u4ef6\u5730\u5740\uff1a 01:23:45:67:89:ab 01:23:45:67:89:ab:cd:ef 01-23-45-67-89-ab 01-23-45-67-89-ab-cd-ef 0123.4567.89ab 0123.4567.89ab.cdef 3.2\u3001func (a HardwareAddr) String() string 4\u3001\u7f51\u5361\u7684\u72b6\u6001\u6807\u8bc6 type Flags uint const ( \u00a0\u00a0\u00a0 FlagUp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Flags = 1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-15444","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15444","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=15444"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15444\/revisions"}],"predecessor-version":[{"id":15445,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15444\/revisions\/15445"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=15444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=15444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=15444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}