{"id":545,"date":"2016-11-15T21:57:36","date_gmt":"2016-11-15T21:57:36","guid":{"rendered":"647bba344396e7c8170902bcf2e15551"},"modified":"2016-11-15T21:57:36","modified_gmt":"2016-11-15T21:57:36","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/545","title":{"rendered":"C# UDP\u7ec4\u64ad"},"content":{"rendered":"

\/\/\u7ec4\u64ad\u4ee3\u7801<\/span><\/b><\/p>\n

using<\/span> System;<\/span>
\n<\/span><\/p>\n

using<\/span> System.Collections.Generic;<\/span>
\n<\/span><\/p>\n

using<\/span> System.Linq;<\/span>using<\/span> System.Text;<\/span>
\n<\/span><\/p>\n

using<\/span> System.Net;<\/span>using<\/span> System.Net.Sockets;<\/span>
\n<\/span><\/p>\n

using<\/span> System.Threading;<\/span>
\n<\/span><\/p>\n

namespace<\/span> <\/span>Test<\/span> {<\/span><\/p>\n

    <\/span>class<\/span> <\/span>Program<\/span>     {\r\n        <\/span>static<\/span> void<\/span> Main<\/span>(string<\/span>[] args<\/span>)\r\n        <\/span>{\r\n            UdpClient client = <\/span>new<\/span> UdpClient(<\/span>5566<\/span>);\r\n            client.JoinMulticastGroup(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>));\r\n            IPEndPoint multicast = <\/span>new<\/span> IPEndPoint(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>), <\/span>7788<\/span>);\r\n            <\/span>byte<\/span>[] buf = Encoding.Default.GetBytes(<\/span>\"Hello from multicast\"<\/span>);\r\n            Thread t = <\/span>new<\/span> Thread(<\/span>new<\/span> ThreadStart(RecvThread));\r\n            t.IsBackground = <\/span>true<\/span>;\r\n            t.Start();\r\n            <\/span>while<\/span> (<\/span>true<\/span>)\r\n            {\r\n                client.Send(buf, buf.Length, multicast);\r\n                Thread.Sleep(<\/span>1000<\/span>);\r\n            }\r\n        }\r\n\r\n        <\/span>static<\/span> void<\/span> RecvThread<\/span>()\r\n        <\/span>{\r\n            UdpClient client = <\/span>new<\/span> UdpClient(<\/span>7788<\/span>);\r\n            client.JoinMulticastGroup(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>));\r\n            IPEndPoint multicast = <\/span>new<\/span> IPEndPoint(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>), <\/span>5566<\/span>);\r\n            <\/span>while<\/span> (<\/span>true<\/span>)\r\n            {\r\n                <\/span>byte<\/span>[] buf = client.Receive(<\/span>ref<\/span> multicast);\r\n                <\/span>string<\/span> msg = Encoding.Default.GetString(buf);\r\n                Console.WriteLine(msg);\r\n            }\r\n        }\r\n    }\r\n}<\/span><\/pre>\n
\u7ec4\u64ad\u5730\u5740\u4e3a 224.0.0.0 ~ 239.255.255.255\uff0c\u5176\u4e2d 224.0.0.0~224.255.255.255 \u4e0d\u5efa\u8bae\u5728\u7528\u6237\u7a0b\u5e8f\u4e2d\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e00\u822c\u90fd\u6709\u7279\u6b8a\u7528\u9014\u3002 <\/span><\/p>\n
 <\/p>\n
\/\/\u5e7f\u64ad\u4ee3\u7801<\/span><\/b><\/p>\n
 <\/span><\/p>\n
using System;<\/span>
\nusing System.Collections.Generic;<\/span>
\nusing System.Linq;<\/span>
\nusing System.Text;<\/span>
\nusing System.Net;<\/span>
\nusing System.Net.Sockets;<\/span>
\nusing System.Threading;<\/span>
\nnamespace ConsoleApplication1<\/span>
\n{<\/span>
\n    class Program<\/span>
\n    {<\/span>
\n        static void Main(string[] args)<\/span>
\n        {<\/span>
\n           
\n Socket socket = new Socket(AddressFamily.InterNetwork,
\nSocketType.Dgram, ProtocolType.IP);\/\/\u53ea\u80fd\u7528 P\u534f\u8bae\u53d1\u9001\u5e7f\u64ad\uff0c\u6240\u4ee5ProtocolType\u8bbe\u7f6e\u4e3a P<\/span>
\n            IPEndPoint iep = new IPEndPoint(IPAddress.Broadcast, 10881);                              \/\/\u8ba9\u5176\u81ea\u52a8\u63d0\u4f9b\u5b50\u7f51\u4e2d\u7684IP\u5730\u5740<\/span>
\n           
\n socket.SetSocketOption(SocketOptionLevel.Socket,
\nSocketOptionName.Broadcast, 1);          \/\/\u8bbe\u7f6ebroadcast\u503c\u4e3a1\uff0c\u5141\u8bb8\u5957\u63a5\u5b57\u53d1\u9001\u5e7f\u64ad\u4fe1\u606f<\/span><\/p>\n
             Int32  i = 0;<\/span>
\n            while (true)<\/span>
\n            {<\/span>
\n                Thread.Sleep(1000);<\/span>
\n                string info = \"Hello\";<\/span>
\n                byte[] bInfo = Encoding.UTF8.GetBytes(info);<\/span>
\n                socket.SendTo(bInfo, iep);<\/span>
\n            }<\/span>
\n        }<\/span>
\n    }<\/span><\/p>\n
}<\/span><\/p>\n

\n<\/span><\/p>\n

\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
\/\/\u7ec4\u64ad\u4ee3\u7801<\/span><\/b><\/p>\n
using<\/span> System;<\/span>
<\/span><\/p>\n
using<\/span> System.Collections.Generic;<\/span>
<\/span><\/p>\n
using<\/span> System.Linq;<\/span>using<\/span> System.Text;<\/span>
<\/span><\/p>\n
using<\/span> System.Net;<\/span>using<\/span> System.Net.Sockets;<\/span>
<\/span><\/p>\n
using<\/span> System.Threading;<\/span>
<\/span><\/p>\n
namespace<\/span>Test<\/span> {<\/span><\/p>\n
class<\/span>Program<\/span>     {\r\n        <\/span>static<\/span>void<\/span>Main<\/span>(string<\/span>[] args<\/span>)\r\n        <\/span>{\r\n            UdpClient client = <\/span>new<\/span> UdpClient(<\/span>5566<\/span>);\r\n            client.JoinMulticastGroup(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>));\r\n            IPEndPoint multicast = <\/span>new<\/span> IPEndPoint(IPAddress.Parse(<\/span>\"234.5.6.7\"<\/span>), <\/span>7788<\/span>);\r\n            <\/span>byte<\/span>[] buf = Encoding.Default.GetBytes(<\/span>\"Hello from multicast\"<\/span>);\r\n            Thread t = <\/span>new<\/span> Thread(<\/span>new<\/span> ThreadStart(RecvThread));\r\n   ...<\/span><\/pre>\n
 \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[291],"tags":[260,259],"class_list":["post-545","post","type-post","status-publish","format-standard","hentry","category-network","tag-broadcast","tag-upd"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=545"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/545\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}