9
我想使用自签名证书向自定义服务器发出HTTPS请求。我使用NSURLConnection的类和加工认证的挑战，但总是在控制台收到错误消息：使用自签名证书在iOS 9中进行HTTPS请求
NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9802)
则方法“连接：didFailWithError：”被调用，出现以下错误：
Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x150094100>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9802, NSErrorPeerCertificateChainKey=<CFArray 0x1500ddd90 [0x19f6dab68]>{type = immutable, count = 1, values = (
0 : <cert(0x14e6fb370) s: (server certificate name) i: (custom CA name)>
)}, NSUnderlyingError=0x1504ae170 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSErrorFailingURLStringKey=https://217.92.80.156:9090/(method name and parameters), NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFNetworkCFStreamSSLErrorOriginalValue=-9802, kCFStreamPropertySSLPeerCertificates=<CFArray 0x1500ddd90 [0x19f6dab68]>{type = immutable, count = 1, values = (
0 : <cert(0x14e6fb370) s: (server certificate name) i: (custom CA name)>
)}, _kCFStreamPropertySSLClientCertificateState=2, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x150094100>, NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., _kCFStreamPropertySSLClientCertificates=<CFArray 0x14e5ee8e0 [0x19f6dab68]>{type = mutable-small, count = 2, values = (
0 : <SecIdentityRef: 0x15012cd40>
1 : <cert(0x15014aa70) s: (client certificate name) i: (custom CA name)>
)}, _kCFStreamErrorDomainKey=3, NSErrorFailingURLKey=https://217.92.80.156:9090/(method name and parameters), _kCFStreamErrorCodeKey=-9802}}, NSErrorClientCertificateChainKey=<CFArray 0x14e5ee8e0 [0x19f6dab68]>{type = mutable-small, count = 2, values = (
0 : <SecIdentityRef: 0x15012cd40>
1 : <cert(0x15014aa70) s: (client certificate name) i: (custom CA name)>
)}, NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://217.92.80.156:9090/(method name and parameters), NSErrorFailingURLStringKey=https://217.92.80.156:9090/(method name and parameters), NSErrorClientCertificateStateKey=2}
应用接收两个验证质询（NSURLAuthenticationMethodClientCertificate和NSURLAuthenticationMethodServerTrust），并以下面的方式处理它们：
- (void) connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
if(challenge.proposedCredential && !challenge.error)
{
[challenge.sender useCredential:challenge.proposedCredential forAuthenticationChallenge:challenge];
return;
}
NSString *strAuthenticationMethod = challenge.protectionSpace.authenticationMethod;
NSLog(@"authentication method: %@", strAuthenticationMethod);
NSURLCredential *credential = nil;
if([strAuthenticationMethod isEqualToString:NSURLAuthenticationMethodClientCertificate])
{
// get identity and certificate from p.12
NSData *PKCS12Data = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"client" ofType:@"p12"]];
NSDictionary *optionsDictionary = [NSDictionary dictionaryWithObject:@"password" forKey:(__bridge id)kSecImportExportPassphrase];
CFArrayRef items = CFArrayCreate(NULL, 0, 0, NULL);
OSStatus securityError = SecPKCS12Import((__bridge CFDataRef)PKCS12Data,(__bridge CFDictionaryRef)optionsDictionary, &items);
SecIdentityRef identity = NULL;
SecCertificateRef certificate = NULL;
if(securityError == errSecSuccess)
{
CFDictionaryRef myIdentityAndTrust = CFArrayGetValueAtIndex(items, 0);
identity = (SecIdentityRef)CFDictionaryGetValue (myIdentityAndTrust, kSecImportItemIdentity);
CFArrayRef array = (CFArrayRef)CFDictionaryGetValue(myIdentityAndTrust, kSecImportItemCertChain);
certificate = (SecCertificateRef)CFArrayGetValueAtIndex(array, 0);
}
credential = [NSURLCredential credentialWithIdentity:identity certificates:[NSArray arrayWithObject:(__bridge id)(certificate)] persistence:NSURLCredentialPersistenceNone];
CFRelease(items);
}
else if([strAuthenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust])
{
int trustCertificateCount = (int)SecTrustGetCertificateCount(challenge.protectionSpace.serverTrust);
NSMutableArray *trustCertificates = [[NSMutableArray alloc] initWithCapacity:trustCertificateCount];
for(int i = 0; i < trustCertificateCount; i ++)
{
SecCertificateRef trustCertificate = SecTrustGetCertificateAtIndex(challenge.protectionSpace.serverTrust, i);
[trustCertificates addObject:(__bridge id) trustCertificate];
}
SecPolicyRef policyRef = NULL;
policyRef = SecPolicyCreateSSL(YES, (__bridge CFStringRef) challenge.protectionSpace.host);
SecTrustRef trustRef = NULL;
if(policyRef)
{
SecTrustCreateWithCertificates((__bridge CFArrayRef) trustCertificates, policyRef, &trustRef);
CFRelease(policyRef);
}
if(trustRef)
{
// SecTrustSetAnchorCertificates(trustRef, (__bridge CFArrayRef) [NSArray array]);
// SecTrustSetAnchorCertificatesOnly(trustRef, NO);
SecTrustResultType result;
OSStatus trustEvalStatus = SecTrustEvaluate(trustRef, &result);
if(trustEvalStatus == errSecSuccess)
{
// just temporary attempt to make it working.
// i hope, there is no such problem, when we have final working version of certificates.
if(result == kSecTrustResultRecoverableTrustFailure)
{
CFDataRef errDataRef = SecTrustCopyExceptions(trustRef);
SecTrustSetExceptions(trustRef, errDataRef);
SecTrustEvaluate(trustRef, &result);
}
if(result == kSecTrustResultProceed || result == kSecTrustResultUnspecified)
credential = [NSURLCredential credentialForTrust:trustRef];
}
CFRelease(trustRef);
}
}
else
{
DDLogWarn(@"Unexpected authentication method. Cancelling authentication ...");
[challenge.sender cancelAuthenticationChallenge:challenge];
}
if(credential)
[challenge.sender useCredential:credential forAuthenticationChallenge:challenge];
else
[challenge.sender cancelAuthenticationChallenge:challenge];
}
在CFNetwork诊断日志中，我可以看到握手过程即将开始。至少应用程序发送“ClientHello”消息，然后服务器发送其“ServerHello”消息并要求进行身份验证。这里的应用程序尝试发送身份验证响应，但立即收到错误。 （同时，在服务器日志中，我根本没有看到任何有关握手的消息）。这是诊断记录的一部分：
Sep 15 10:51:49 AppName[331] <Notice>: CFNetwork Diagnostics [3:49] 10:51:49.185 {
Authentication Challenge
Loader: <CFURLRequest 0x1501931c0 [0x19f6dab68]> {url = https://217.92.80.156:9090/(method name and parameters), cs = 0x0}
Challenge: challenge space https://217.92.80.156:9090/, ServerTrustEvaluationRequested (Hash f9810ad8165b3620)
} [3:49]
Sep 15 10:51:49 AppName[331] <Notice>: CFNetwork Diagnostics [3:50] 10:51:49.189 {
Use Credential
Loader: <CFURLRequest 0x1501931c0 [0x19f6dab68]> {url = https://217.92.80.156:9090/(method name and parameters), cs = 0x0}
Credential: Name: server, Persistence: session
} [3:50]
Sep 15 10:51:49 AppName[331] <Notice>: CFNetwork Diagnostics [3:51] 10:51:49.190 {
touchConnection
Loader: <CFURLRequest 0x1501931c0 [0x19f6dab68]> {url = https://217.92.80.156:9090/(method name and parameters), cs = 0x0}
Timeout Interval: 60.000 seconds
} [3:51]
Sep 15 10:51:49 AppName[331] <Notice>: CFNetwork Diagnostics [3:52] 10:51:49.192 {
Response Error
Request: <CFURLRequest 0x14e5d02a0 [0x19f6dab68]> {url = https://217.92.80.156:9090/(method name and parameters), cs = 0x0}
Error: Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFNetworkCFStreamSSLErrorOriginalValue=-9802, kCFStreamPropertySSLPeerCertificates=<CFArray 0x1500ddd90 [0x19f6dab68]>{type = immutable, count = 1, values = (
0 : <cert(0x14e6fb370) s: (server certificate name) i: (custom CA name)>
)}, _kCFStreamPropertySSLClientCertificateState=2, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x150094100>, _kCFStreamPropertySSLClientCertificates=<CFArray 0x14e5ee8e0 [0x19f6dab68]>{type = mutable-small, count = 2, values = (
0 : <SecIdentityRef: 0x15012cd40>
1 : <cert(0x15014aa70) s: (client certificate name) i: (custom CA name)>
)}, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9802}
} [3:52]
我们的后端实例可以在客户端进行安装，所以我不能设置Info.plist文件中的任何域例外。此外，应用程序可以通过IPv4格式的IP地址请求服务器，但不能通过域名（如我的示例中所示）。
我有什么企图：
- 使用NSURLSession代替NSURLConnection的，但没有成功;
- 检查了Apple的ATS服务器实施要求here（后端开发人员确信他的实施符合所有要求）;
- 根据stackoverflow和Apple开发人员论坛上解决的各种问题，为设置信任验证设置了锚定证书;
- 特别注意similar帖子及其相关solution在开发者论坛;
我在iOS 9 GM种子（Build 13A340）和xCode 7 GM种子（Build 7A218）上测试了iPad Air 2上的https请求。重要提示：此功能在iOS 8下正常工作。考虑到这一点，我可能会认为，问题在于我们的服务器，但我们的后端开发人员向我保证，一切都很好。
现在我出来的想法。如果有人能够给我一个提示，或者至少提出一些其他的诊断方法，我会很感激，它会揭示特定的错误，比“致命的警报”更具体。
谢谢。
编辑1：SecTrustEvaluate总是返回kSecTrustResultRecoverableTrustFailure，这就是为什么我不得不寻找某种解决方法。
您是否找到解决方案？我也有这个问题，我想使用我的本地服务器进行测试，但有了自签名证书，这是不可能的，我得到同样的错误... –
还没有，我必须从事其他高优先级任务由于几个原因。如果我有解决方案，我会联系你。 – alfared
这是一个iOS PITA协议错误。 （PITA代表....中的痛苦） – Josh