证书不会偶尔发送

Question

在我的应用程序中，我有 2 个组件通过 REST（基于客户端-服务器）相互通信。
该应用程序可以配置为使用 HTTP 或 HTTPS（自签名证书）。

有时当我在 HTTPS 模式下启动我的应用程序时，我的客户端无法与服务器通信。我收到以下异常：

    09-16-2013 12:28:52 [dispatcher] [http-nio-8143-exec-8] [INFO] - Exception while dispatching request
java.util.concurrent.ExecutionException: com.sun.jersey.api.client.ClientHandlerException: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
    ...
Caused by: com.sun.jersey.api.client.ClientHandlerException: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
    ...
Caused by: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
    ...
Caused by: java.io.EOFException: SSL peer shut down incorrectly
    ...

当我停止并启动应用程序时，一切都按预期工作。
我尝试寻找解决方案，但由于不时发生的事情并通过重新启动修复，找不到与我的问题相似的任何问题，所有问题都是一致的。

Java 版本：Oracle Corporation，“Java HotSpot(TM) 64 位服务器 VM”，1.7.0_17-b02 操作系统：红帽 有什么想法吗？

更新
事实证明，这也可能在应用程序运行一段时间后发生。意思是，一切正常，SSL 通信正常，突然发生此错误，直到我重新启动客户端才能解决。

我能够用 -Djavax.net.debug=all 重现问题，显然证书没有从客户端发送，问题是为什么。由于有时一切顺利，什么会导致事情不时出错？

客户端：

pool-4-thread-2, WRITE: TLSv1 Handshake, length = 48
pool-4-thread-2, waiting for close_notify or alert: state 1
pool-4-thread-2, received EOFException: error
pool-4-thread-2, Exception while waiting for close javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
pool-4-thread-2, handling exception: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
%% Invalidated:  [Session-7, TLS_RSA_WITH_AES_128_CBC_SHA]
pool-4-thread-2, SEND TLSv1 ALERT:  fatal, description = handshake_failure
Padded plaintext before ENCRYPTION:  len = 32
0000: 02 28 7A 8E 21 1F 09 1A   5F 00 5C 42 6B 12 33 D8  .(z.!..._.\Bk.3.
0010: 73 F0 58 DD 0D D9 09 09   09 09 09 09 09 09 09 09  s.X.............
pool-4-thread-2, WRITE: TLSv1 Alert, length = 32
pool-4-thread-2, Exception sending alert: java.net.SocketException: Broken pipe
pool-4-thread-2, called closeSocket()
Keep-Alive-Timer, called close()
Keep-Alive-Timer, called closeInternal(true)
Keep-Alive-Timer, SEND TLSv1 ALERT:  warning, description = close_notify
Padded plaintext before ENCRYPTION:  len = 32
0000: 01 00 FD 8B FE 50 2A 16   8A FC 10 F7 E0 05 7E D1  .....P*.........
0010: 0A 78 A0 03 84 26 09 09   09 09 09 09 09 09 09 09  .x...&..........
Keep-Alive-Timer, WRITE: TLSv1 Alert, length = 32
[Raw write]: length = 37
0000: 15 03 01 00 20 24 CC 05   7B DA AA 98 D7 BC 49 07  .... $........I.
0010: 59 94 A4 42 A1 D9 22 42   34 C2 75 1B 9E 36 F0 23  Y..B.."B4.u..6.#
0020: 58 9D 80 8D 38                                     X...8
Keep-Alive-Timer, called closeSocket(selfInitiated)

服务器端：

http-nio-8243-exec-2, READ: TLSv1 Handshake, length = 269
*** Certificate chain
***
http-nio-8243-exec-2, fatal error: 42: null cert chain
javax.net.ssl.SSLHandshakeException: null cert chain
%% Invalidated:  [Session-5, TLS_RSA_WITH_AES_128_CBC_SHA]
http-nio-8243-exec-2, SEND TLSv1 ALERT:  fatal, description = bad_certificate
http-nio-8243-exec-2, WRITE: TLSv1 Alert, length = 2
http-nio-8243-exec-2, fatal: engine already closed.  Rethrowing javax.net.ssl.SSLHandshakeException: null cert chain
http-nio-8243-exec-2, called closeOutbound()
http-nio-8243-exec-2, closeOutboundInternal()
http-nio-8243-ClientPoller-1, called closeOutbound()
http-nio-8243-ClientPoller-1, closeOutboundInternal()
http-nio-8243-ClientPoller-1, SEND TLSv1 ALERT:  warning, description = close_notify

Answer 1

javax.net.ssl.SSLHandshakeException: null cert chain

看起来服务器需要一个客户端证书，而您没有发送一个，或者发送了一些无效的东西。在客户端 SSL 日志中，您将有一个入站 CertificateRequest，后面没有出站 Certificate 消息，或者后面是一个空消息。

Answer 2

显然有人添加了覆盖证书的代码：

        HttpsURLConnection.setDefaultSSLSocketFactory(ctx.getSocketFactory());

我删除了这一行，现在一切正常。