在WebSocket中添加ssl遇到的问题

在WebSocket中添加ssl遇到的问题

[toc]
做个记录

错误日志及解决方案

可以从复制下自己的错误，在网页中找下，看下能不能找到。

// System.setProperty(“javax.net.debug”, “all”);

问题1：javax.net.ssl.SSLHandshakeException: No appropriate protocol

io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)

方案：权限问题

过一阵瞎搞，最后才发现是因为jdk1.8版本导致SSL调用权限上有问题。
解决办法:找到jdk 1.8安装目录，找到jdk里面的lib\security 下面有个java.security。找到对应的SSLv3，删除掉，重启项目就好了。（删掉SSLv3就是允许SSL调用）

问题2：protocol_version、 ERR_CERT_COMMON_NAME_INVALID、 ERR_CERT_AUTHORITY_INVALID

Caused by: javax.net.ssl.SSLException: Received fatal alert: protocol_version
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLException: Received fatal alert: protocol_version
Caused by: javax.net.ssl.SSLException: Received fatal alert: protocol_version

方案：网页客户端需要信任证书

• ERR_CERT_COMMON_NAME_INVALID
• ERR_CERT_AUTHORITY_INVALID
• 解决方案
  
  1. chrome访问chrome://flags/#show-cert-link
  2. 找到Allow invalid certificates for resources loaded from localhost.
  3. 改成Enabled
• 解决方案出处 https://jingyan.baidu.com/article/636f38bb64f3c0d6b9461046.html

internal_error

问题3：io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record:

io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record:

方案：

客户端中pipeline.addLast(“ssl”, new SslHandler(sslEngine));

问题4：PKIX path building failed、General SSLEngine problem、unable to find valid certification path to requested target

018-08-17 15:35:55.250 DEBUG io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker13 - WebSocket version 13 client handshake key: txOihqp44yIRBkIiOqYQzA==, expected response: cR25d0JOMq6RBX9igrELEfGejKA=
2018-08-17 15:35:55.820 INFO com.lizhaoblog.server.channel.websocket.WebSocketClientHandlerTest - 异常发生
io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: General SSLEngine problem

Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
Caused by: javax.net.ssl.SSLHandshakeException: General SSLEngine problem
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
… 26 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
… 32 more

Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

方案：

• 自己生成的证书，没有经过验证，jdk不认可
  
  • 启动服务器
  • 使用SSLCre请求生成一个jssecacerts
  • 将jssecacerts替换成D:\Program Files\Java\jdk1.8.0_171\jre\lib\security下的cacerts
  • 要记得改名字
    “`