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随机该请求被中止：无法创建SSL/TLS安全通道。返回码= MessageAltered

分类: 技术问答 • 2022-09-18 23:33:24
问题描述：

在一出围绕千个HTTPS请求，以下异常被抛出：随机该请求被中止：无法创建SSL/TLS安全通道。返回码= MessageAltered

System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel. 
    at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) 
    at System.Net.WebClient.DownloadString(Uri address)

日志从System.Net看起来像如下：

2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] Associating HttpWebRequest#37618637 with ServicePoint#28841767 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] Associating Connection#16407032 with HttpWebRequest#37618637 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net.Sockets | [2688] Socket#42531032 - Created connection from x.x.x.x:12345 to y.y.y.y:443. 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] Connection#16407032 - Created connection from x.x.x.x:12345 to y.y.y.y:443. 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] TlsStream#54603865::.ctor(host=www.remoteservice.com, #certs=0) 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] Associating HttpWebRequest#37618637 with ConnectStream#27023101 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] HttpWebRequest#37618637 - Request: GET /api/v3/method HTTP/1.1 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] ConnectStream#27023101 - Sending headers 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] SecureChannel#66031633::.ctor(hostname=www.remoteservice.com, #clientCertificates=0, encryptionPolicy=RequireEncryption) 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] SecureChannel#66031633 - Left with 0 client certificates to choose from. 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] Using the cached credential handle. 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = (null), targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.1031 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffer length=0, Out-Buffer length=379, returned code=ContinueNeeded). 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505f981f0, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505f981f0, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505f981f0, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:10:17.1656 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505f981f0, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.4937 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=574, returned code=ContinueNeeded). 
2016-09-20 15:10:17.5562 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505f981f0, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:10:17.5562 | INFO | 72 | System.Net | [2688] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=MessageAltered). 
2016-09-20 15:10:17.5562 | ERROR | 72 | System.Net | [2688] Exception in HttpWebRequest#37618637:: - The request was aborted: Could not create SSL/TLS secure channel.. 
2016-09-20 15:10:17.5562 | ERROR | 72 | System.Net | [2688] Exception in HttpWebRequest#37618637::GetResponse - The request was aborted: Could not create SSL/TLS secure channel.. 
2016-09-20 15:10:17.5562 | ERROR | 72 | System.Net | [2688] Exception in HttpWebRequest#37618637:: - The request was aborted: The request was canceled..

的两端的InitializeSecurityContext跟线：

InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=MessageAltered)

为了比较，这里是一个成功的HTTPS调用：

2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] Associating HttpWebRequest#23767080 with ServicePoint#28841767 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] Associating Connection#23643787 with HttpWebRequest#23767080 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net.Sockets | [1900] Socket#66957105 - Created connection from x.x.x.x:12345 to y.y.y.y:443. 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] Connection#23643787 - Created connection from x.x.x.x:12345 to y.y.y.y:443. 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] TlsStream#51402822::.ctor(host=www.remoteservice.com, #certs=0) 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] Associating HttpWebRequest#23767080 with ConnectStream#55741749 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] HttpWebRequest#23767080 - Request: GET /api/v3/method/123 HTTP/1.1 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] ConnectStream#55741749 - Sending headers 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] SecureChannel#20739431::.ctor(hostname=www.remoteservice.com, #clientCertificates=0, encryptionPolicy=RequireEncryption) 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] SecureChannel#20739431 - Left with 0 client certificates to choose from. 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] Using the cached credential handle. 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = (null), targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:21.9128 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffer length=0, Out-Buffer length=379, returned code=ContinueNeeded). 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:11:21.9909 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:22.3190 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=574, returned code=ContinueNeeded). 
2016-09-20 15:11:22.3815 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=ContinueNeeded). 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(credential = System.Net.SafeFreeCredential_SECURITY, context = e239863c90:3505fb0480, targetName = www.remoteservice.com, inFlags = ReplayDetect, SequenceDetect, Confidentiality, AllocateMemory, InitManualCredValidation) 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] InitializeSecurityContext(In-Buffers count=2, Out-Buffer length=0, returned code=OK). 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] Remote certificate: [Version] V3 (more info on certificate here) 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] SecureChannel#20739431 - Remote certificate was verified as valid by the user. 
2016-09-20 15:11:22.7878 | INFO | 47 | System.Net | [1900] ProcessAuthentication(Protocol=Tls12, Cipher=Aes256 256 bit strength, Hash=32781 0 bit strength, Key Exchange=DiffieHellman 4096 bit strength). 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] Connection#23643787 - Received status line: Version=1.1, StatusCode=200, StatusDescription=OK. 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] Connection#23643787 - Received headers 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] ConnectStream#43287324::ConnectStream(Buffered -1 bytes.) 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] Associating HttpWebRequest#23767080 with ConnectStream#43287324 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] Associating HttpWebRequest#23767080 with HttpWebResponse#32954516 
2016-09-20 15:11:22.8971 | INFO | 47 | System.Net | [1900] ContentLength=-1

的ServicePointManager配置如下：

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls; 
ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true; 
ServicePointManager.Expect100Continue = false; 
ServicePointManager.DefaultConnectionLimit = 24;

.NET Framework版本为4.5。

你知道为什么会发生这种情况吗？

答

从Schannel中的角度来看，MessageAltered意味着：TLS1_ALERT_BAD_RECORD_MAC其按照RFC 5246：https://tools.ietf.org/html/rfc5246意味着：

bad_record_mac如果带有不正确的 MAC接收到一个记录被返回 此警报。如果发送警报，则必须返回此警报，因为 TLSCiphertext以非法方式解密：或者 甚至是块长度的倍数，或者 检查时的填充值不正确。该消息总是致命的，并且在适当的实现 之间的通信中不应该遵守 （除非在网络中消息被破坏）。

收到的邮件似乎以某种方式/形式损坏导致错误 - 因为解密不能执行。您可能必须联系服务器供应商以纠正其问题的一面，或者如果您无法影响服务器人员，请重试该请求 - 前提是后续请求成功。

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