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keyword\">CREATE<\/span> <span class=\"token keyword\">TABLE<\/span> UpdatePackages <span class=\"token punctuation\">(<\/span><br \/>\n    Id <span class=\"token keyword\">INT<\/span> <span class=\"token keyword\">PRIMARY<\/span> <span class=\"token keyword\">KEY<\/span> <span class=\"token keyword\">IDENTITY<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    VersionId <span class=\"token keyword\">INT<\/span> <span class=\"token keyword\">FOREIGN<\/span> <span class=\"token keyword\">KEY<\/span> <span class=\"token keyword\">REFERENCES<\/span> Versions<span class=\"token punctuation\">(<\/span>Id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    PackageType NVARCHAR<span class=\"token punctuation\">(<\/span><span 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class-name\">ControllerBase<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">IVersionService<\/span> _versionService<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">VersionController<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IVersionService<\/span> versionService<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _versionService <span class=\"token operator\">&#061;<\/span> versionService<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">HttpGet<\/span><span class=\"token attribute-arguments\"><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;latest&#034;<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<span class=\"token punctuation\">&lt;<\/span>IActionResult<span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">GetLatestVersion<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> latestVersion <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> _versionService<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetLatestVersionAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token function\">Ok<\/span><span class=\"token punctuation\">(<\/span>latestVersion<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u56db\u3001\u66f4\u65b0\u5305\u5904\u7406&#xff1a;\u5168\u91cf\u4e0e\u5dee\u5206<\/h3>\n<h4>4.1 \u5dee\u5206\u66f4\u65b0\u5f15\u64ce\u5b9e\u73b0<\/h4>\n<p>\u4f7f\u7528 RSync\u7b97\u6cd5 \u8ba1\u7b97\u6587\u4ef6\u5dee\u5f02\u5757&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">DeltaPatcher<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> <span class=\"token function\">GenerateDelta<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> oldFilePath<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> newFilePath<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> oldBytes <span class=\"token operator\">&#061;<\/span> File<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadAllBytes<\/span><span class=\"token punctuation\">(<\/span>oldFilePath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> newBytes <span class=\"token operator\">&#061;<\/span> File<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadAllBytes<\/span><span class=\"token punctuation\">(<\/span>newFilePath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u4f7f\u7528RSync\u7b97\u6cd5\u8ba1\u7b97\u5dee\u5f02\u5757<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> delta <span class=\"token operator\">&#061;<\/span> RSyncAlgorithm<span class=\"token punctuation\">.<\/span><span class=\"token function\">ComputeDelta<\/span><span class=\"token punctuation\">(<\/span>oldBytes<span class=\"token punctuation\">,<\/span> newBytes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> delta<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">ApplyDelta<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> oldFilePath<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> delta<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> oldBytes <span class=\"token operator\">&#061;<\/span> File<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadAllBytes<\/span><span class=\"token punctuation\">(<\/span>oldFilePath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> patchedBytes <span class=\"token operator\">&#061;<\/span> RSyncAlgorithm<span class=\"token punctuation\">.<\/span><span class=\"token function\">ApplyDelta<\/span><span class=\"token punctuation\">(<\/span>oldBytes<span class=\"token punctuation\">,<\/span> delta<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        File<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteAllBytes<\/span><span class=\"token punctuation\">(<\/span>oldFilePath <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;.new&#034;<\/span><span class=\"token punctuation\">,<\/span> patchedBytes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ RSync\u7b97\u6cd5\u4f2a\u4ee3\u7801&#xff08;\u5b9e\u9645\u9700\u5f15\u7528\u5e93&#xff09;<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">RSyncAlgorithm<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> <span class=\"token function\">ComputeDelta<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> oldData<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> newData<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5b9e\u73b0\u6eda\u52a8\u54c8\u5e0c\u4e0e\u5757\u5339\u914d<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u8fd4\u56de\u5dee\u5f02\u5757\u6570\u636e<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> <span class=\"token function\">ApplyDelta<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> oldData<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">byte<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> delta<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u5e94\u7528\u5dee\u5f02\u5757\u5230\u65e7\u6570\u636e<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u8fd4\u56de\u65b0\u6570\u636e<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001\u5b89\u5168\u6027\u6821\u9a8c&#xff1a;\u7b7e\u540d\u4e0e\u9a8c\u8bc1<\/h3>\n<h4>5.1 \u7b7e\u540d\u751f\u6210\u4e0e\u9a8c\u8bc1<\/h4>\n<p>\u4f7f\u7528 RSA\u975e\u5bf9\u79f0\u52a0\u5bc6 \u786e\u4fdd\u66f4\u65b0\u5305\u5b8c\u6574\u6027&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UpdatePackageService<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">IUpdatePackageService<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _privateKey<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _publicKey<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">UpdatePackageService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">IConfiguration<\/span> configuration<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _privateKey <span class=\"token operator\">&#061;<\/span> configuration<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Security:PrivateKey&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _publicKey <span class=\"token operator\">&#061;<\/span> configuration<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Security:PublicKey&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">string<\/span><\/span> <span class=\"token function\">GenerateSignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> filePath<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> fileBytes <span class=\"token operator\">&#061;<\/span> File<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadAllBytes<\/span><span class=\"token punctuation\">(<\/span>filePath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">using<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> rsa <span class=\"token operator\">&#061;<\/span> RSA<span class=\"token punctuation\">.<\/span><span class=\"token function\">Create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        rsa<span class=\"token punctuation\">.<\/span><span class=\"token function\">ImportFromPem<\/span><span class=\"token punctuation\">(<\/span>_privateKey<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> signature <span class=\"token operator\">&#061;<\/span> rsa<span class=\"token punctuation\">.<\/span><span class=\"token function\">SignData<\/span><span class=\"token punctuation\">(<\/span>fileBytes<span class=\"token punctuation\">,<\/span> HashAlgorithmName<span class=\"token punctuation\">.<\/span>SHA256<span class=\"token punctuation\">,<\/span> RSASignaturePadding<span class=\"token punctuation\">.<\/span>Pkcs1V15<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> Convert<span class=\"token punctuation\">.<\/span><span class=\"token function\">ToBase64String<\/span><span class=\"token punctuation\">(<\/span>signature<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">bool<\/span><\/span> <span class=\"token function\">VerifySignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> filePath<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> signature<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> fileBytes <span class=\"token operator\">&#061;<\/span> File<span class=\"token punctuation\">.<\/span><span class=\"token function\">ReadAllBytes<\/span><span class=\"token punctuation\">(<\/span>filePath<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> signatureBytes <span class=\"token operator\">&#061;<\/span> Convert<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromBase64String<\/span><span class=\"token punctuation\">(<\/span>signature<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">using<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> rsa <span class=\"token operator\">&#061;<\/span> RSA<span class=\"token punctuation\">.<\/span><span class=\"token function\">Create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        rsa<span class=\"token punctuation\">.<\/span><span class=\"token function\">ImportFromPem<\/span><span class=\"token punctuation\">(<\/span>_publicKey<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> rsa<span class=\"token punctuation\">.<\/span><span class=\"token function\">VerifyData<\/span><span class=\"token punctuation\">(<\/span>fileBytes<span class=\"token punctuation\">,<\/span> signatureBytes<span class=\"token punctuation\">,<\/span> HashAlgorithmName<span class=\"token punctuation\">.<\/span>SHA256<span class=\"token punctuation\">,<\/span> RSASignaturePadding<span class=\"token punctuation\">.<\/span>Pkcs1V15<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u516d\u3001\u5ba2\u6237\u7aef\u52a0\u8f7d\u66f4\u65b0\u5305<\/h3>\n<h4>6.1 \u89e3\u538b\u4e0e\u66ff\u6362<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">HotUpdateManager<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">ApplyUpdate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> updatePackagePath<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u89e3\u538b\u66f4\u65b0\u5305<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> tempDir <span class=\"token operator\">&#061;<\/span> Path<span class=\"token punctuation\">.<\/span><span class=\"token function\">Combine<\/span><span class=\"token punctuation\">(<\/span>Path<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetTempPath<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;hotupdate&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        ZipFile<span class=\"token punctuation\">.<\/span><span class=\"token function\">ExtractToDirectory<\/span><span class=\"token punctuation\">(<\/span>updatePackagePath<span class=\"token punctuation\">,<\/span> tempDir<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u66ff\u6362\u65e7\u6587\u4ef6<\/span><br \/>\n        <span class=\"token keyword\">foreach<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> file <span class=\"token keyword\">in<\/span> Directory<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetFiles<\/span><span class=\"token punctuation\">(<\/span>tempDir<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> targetPath <span class=\"token operator\">&#061;<\/span> Path<span class=\"token punctuation\">.<\/span><span class=\"token function\">Combine<\/span><span class=\"token punctuation\">(<\/span>Application<span class=\"token punctuation\">.<\/span>StartupPath<span class=\"token punctuation\">,<\/span> Path<span class=\"token punctuation\">.<\/span><span class=\"token function\">GetFileName<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            File<span class=\"token punctuation\">.<\/span><span class=\"token function\">Replace<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">,<\/span> targetPath<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u89e6\u53d1\u7a0b\u5e8f\u96c6\u91cd\u8f7d&#xff08;\u9700\u7ed3\u5408AppDomain\u6216ILRuntime&#xff09;<\/span><br \/>\n        <span class=\"token function\">ReloadAssemblies<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">ReloadAssemblies<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u4f7f\u7528AppDomain\u9694\u79bb\u52a0\u8f7d\u65b0\u7a0b\u5e8f\u96c6<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> loader <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">HotLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        loader<span class=\"token punctuation\">.<\/span><span class=\"token function\">LoadAssembly<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;path\/to\/newAssembly.dll&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e03\u3001\u6d4b\u8bd5\u4e0e\u90e8\u7f72<\/h3>\n<h4>7.1 \u5355\u5143\u6d4b\u8bd5\u793a\u4f8b<\/h4>\n<p><span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">TestClass<\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UpdatePackageTests<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">TestMethod<\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">TestDeltaGeneration<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> oldFile <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;old.dll&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> newFile <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;new.dll&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> delta <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">DeltaPatcher<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">GenerateDelta<\/span><span class=\"token punctuation\">(<\/span>oldFile<span class=\"token punctuation\">,<\/span> newFile<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        Assert<span class=\"token punctuation\">.<\/span><span class=\"token function\">IsTrue<\/span><span class=\"token punctuation\">(<\/span>delta<span class=\"token punctuation\">.<\/span>Length <span class=\"token operator\">&lt;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">FileInfo<\/span><span class=\"token punctuation\">(<\/span>newFile<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>Length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token punctuation\">[<\/span><span class=\"token attribute\"><span class=\"token class-name\">TestMethod<\/span><\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">TestSignatureVerification<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> service <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">UpdatePackageService<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> signature <span class=\"token operator\">&#061;<\/span> service<span class=\"token punctuation\">.<\/span><span class=\"token function\">GenerateSignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;test.dll&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> isValid <span class=\"token operator\">&#061;<\/span> service<span class=\"token punctuation\">.<\/span><span class=\"token function\">VerifySignature<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;test.dll&#034;<\/span><span class=\"token punctuation\">,<\/span> signature<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        Assert<span class=\"token punctuation\">.<\/span><span class=\"token function\">IsTrue<\/span><span class=\"token punctuation\">(<\/span>isValid<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>7.2 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class=\"token function\">Main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><\/span> args<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> services <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">ServiceCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        services<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">AddTransient<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>IMyService<span class=\"token punctuation\">,<\/span> MyServiceV1<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u5b9e\u73b0<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> provider <span class=\"token operator\">&#061;<\/span> services<span class=\"token punctuation\">.<\/span><span class=\"token function\">BuildServiceProvider<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u70ed\u66f4\u65b0\u65f6\u66ff\u6362\u4e3a\u65b0\u7248\u672c<\/span><br \/>\n        services<span class=\"token punctuation\">.<\/span><span class=\"token function\">Clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        services<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">AddTransient<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>IMyService<span class=\"token punctuation\">,<\/span> MyServiceV2<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> newProvider <span class=\"token operator\">&#061;<\/span> services<span class=\"token punctuation\">.<\/span><span class=\"token function\">BuildServiceProvider<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token 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