扩展server_name (SNI扩展)不使用jdk1.8.0发送，而使用jdk1.7.0发送
扩展server_name (SNI扩展)不使用jdk1.8.0发送，而使用jdk1.7.0发送
提问于 2015-06-13 19:03:58
我已经使用ApacheCXF (v3.0.4)实现了一个JAX-WS客户端，一切都正常工作，但是当我想通过Java8 (jdk1.8.0_25)使用安全连接(SSL/TLS)时，问题就来了。
我在日志(-Djavax.net.debug=all)中看到以下异常：
main, handling exception: java.net.SocketException: Connection reset
main, SEND TLSv1.2 ALERT: fatal, description = unexpected_message
main, WRITE: TLSv1.2 Alert, length = 2
main, Exception sending alert: java.net.SocketException: Connection reset by peer: socket write error经过非对等分析后，我观察到这个问题是因为在Java8中没有发送server_name (SNI)，但是在Java7中发送了它，并且web服务调用成功。
Java8日志(-Djavax.net.debug=all):缺少"Extension server_name“
[...]
Compression Methods: { 0 }
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1}
Extension ec_point_formats, formats: [uncompressed]
Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA224withECDSA, SHA224withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA, MD5withRSA
***
[...]Java7日志(-Djavax.net.debug=all) (Works)：设置了 "Extension server_name“
[...]
Compression Methods: { 0 }
Extension elliptic_curves, curve names: {secp256r1, sect163k1, sect163r2, secp192r1, secp224r1, sect233k1, sect233r1, sect283k1, sect283r1, secp384r1, sect409k1, sect409r1, secp521r1, sect571k1, sect571r1, secp160k1, secp160r1, secp160r2, sect163r1, secp192k1, sect193r1, sect193r2, secp224k1, sect239k1, secp256k1}
Extension ec_point_formats, formats: [uncompressed]
Extension signature_algorithms, signature_algorithms: SHA512withECDSA, SHA512withRSA, SHA384withECDSA, SHA384withRSA, SHA256withECDSA, SHA256withRSA, SHA224withECDSA, SHA224withRSA, SHA1withECDSA, SHA1withRSA, SHA1withDSA, MD5withRSA
Extension server_name, server_name: [host_name: testeo.hostname.es]
***
[...]可以观察到，在Java7中设置了扩展server_name，server_name: host_name: testeo.hostname.es，然后web服务调用成功。
为什么Java8没有像Java7那样设置server_name？这是Java配置问题吗？
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原文链接：
https://stackoverflow.com/questions/30817934
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