title: "no cipher suites in common" error in spring-boot application with undertow servlet container
body: <p>I am trying to use SSL in my web application. When I access <a href="https://127.0.0.1:8443" rel="nofollow noreferrer">https://127.0.0.1:8443</a>, I am getting <code>javax.net.ssl.SSLHandshakeException: no cipher suites in common</code>. </p>
  
  <p>I use undertow embedded servlet container.</p>
  
  <p>Following is my spring-boot configuration:</p>
  
  <pre><code>server:
      port: 8443
      ssl:
          key-store: keystore.p12
          key-store-password: PASSWD
          key-password: PASSWD
          keyAlias: API
          key-store-type: PKCS12
  </code></pre>
  
  <p>I generate keystore using following command:</p>
  
  <pre><code>keytool -genkey -alias API -storetype PKCS12 -keyalg RSA -keysize 2048 -keystore keystore.p12 -validity 3650
  </code></pre>
  
  <p>How can I troubleshoot this error?</p>
  
  <p>I also see some unsupported extension messages in logs. Are these important or ignorable? </p>
  
  <pre><code>Using SSLEngineImpl.
  Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_CBC_SHA256
  Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
  Ignoring unavailable cipher suite: TLS_RSA_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
  Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
  Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
  Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
  Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
  Ignoring unavailable cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
  Ignoring unavailable cipher suite: TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
  Ignoring unavailable cipher suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
  Allow unsafe renegotiation: true
  Allow legacy hello messages: true
  Is initial handshake: true
  Is secure renegotiation: false
  Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 for TLSv1
  Ignoring unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 for TLSv1.1
  Ignoring unsupported cipher suite: TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 for TLSv1.1
  [Raw read]: length = 5
  0000: 16 03 01 00 AE                                     .....
  [Raw read]: length = 174
  0000: 01 00 00 AA 03 03 D6 77   1F 2F 88 5D 31 C6 40 69  .......w./.]1.@i
  0010: 8D 78 38 FA 16 4E 19 C4   D5 43 34 91 35 2A 2A 7C  .x8..N...C4.5**.
  0020: 77 B4 E8 71 E8 5B 00 00   1C DA DA C0 2B C0 2F C0  w..q.[......+./.
  0030: 2C C0 30 CC A9 CC A8 C0   13 C0 14 00 9C 00 9D 00  ,.0.............
  0040: 2F 00 35 00 0A 01 00 00   65 1A 1A 00 00 FF 01 00  /.5.....e.......
  0050: 01 00 00 17 00 00 00 23   00 00 00 0D 00 14 00 12  .......#........
  0060: 04 03 08 04 04 01 05 03   08 05 05 01 08 06 06 01  ................
  0070: 02 01 00 05 00 05 01 00   00 00 00 00 12 00 00 00  ................
  0080: 10 00 0E 00 0C 02 68 32   08 68 74 74 70 2F 31 2E  ......h2.http/1.
  0090: 31 75 50 00 00 00 0B 00   02 01 00 00 0A 00 0A 00  1uP.............
  00A0: 08 7A 7A 00 1D 00 17 00   18 2A 2A 00 01 00        .zz......**...
  XNIO-3 I/O-1, READ: TLSv1 Handshake, length = 174
  *** ClientHello, TLSv1.2
  RandomCookie:  GMT: -696836305 bytes = { 136, 93, 49, 198, 64, 105, 141, 120, 56, 250, 22, 78, 25, 196, 213, 67, 52, 145, 53, 42, 42, 124, 119, 180, 232, 113, 232, 91 }
  Session ID:  {}
  Cipher Suites: [Unknown 0xda:0xda, TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, Unknown 0xcc:0xa9, Unknown 0xcc:0xa8, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_256_GCM_SHA384, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA]
  Compression Methods:  { 0 }
  Unsupported extension type_6682, data: 
  Extension renegotiation_info, renegotiated_connection: &lt;empty&gt;
  Unsupported extension type_23, data: 
  Unsupported extension type_35, data: 
  Extension signature_algorithms, signature_algorithms: SHA256withECDSA, Unknown (hash:0x8, signature:0x4), SHA256withRSA, SHA384withECDSA, Unknown (hash:0x8, signature:0x5), SHA384withRSA, Unknown (hash:0x8, signature:0x6), SHA512withRSA, SHA1withRSA
  Unsupported extension status_request, data: 01:00:00:00:00
  Unsupported extension type_18, data: 
  Unsupported extension type_16, data: 00:0c:02:68:32:08:68:74:74:70:2f:31:2e:31
  Unsupported extension type_30032, data: 
  Extension ec_point_formats, formats: [uncompressed]
  Extension elliptic_curves, curve names: {unknown curve 31354, unknown curve 29, secp256r1, secp384r1}
  Unsupported extension type_10794, data: 00
  ***
  [read] MD5 and SHA1 hashes:  len = 174
  0000: 01 00 00 AA 03 03 D6 77   1F 2F 88 5D 31 C6 40 69  .......w./.]1.@i
  0010: 8D 78 38 FA 16 4E 19 C4   D5 43 34 91 35 2A 2A 7C  .x8..N...C4.5**.
  0020: 77 B4 E8 71 E8 5B 00 00   1C DA DA C0 2B C0 2F C0  w..q.[......+./.
  0030: 2C C0 30 CC A9 CC A8 C0   13 C0 14 00 9C 00 9D 00  ,.0.............
  0040: 2F 00 35 00 0A 01 00 00   65 1A 1A 00 00 FF 01 00  /.5.....e.......
  0050: 01 00 00 17 00 00 00 23   00 00 00 0D 00 14 00 12  .......#........
  0060: 04 03 08 04 04 01 05 03   08 05 05 01 08 06 06 01  ................
  0070: 02 01 00 05 00 05 01 00   00 00 00 00 12 00 00 00  ................
  0080: 10 00 0E 00 0C 02 68 32   08 68 74 74 70 2F 31 2E  ......h2.http/1.
  0090: 31 75 50 00 00 00 0B 00   02 01 00 00 0A 00 0A 00  1uP.............
  00A0: 08 7A 7A 00 1D 00 17 00   18 2A 2A 00 01 00        .zz......**...
  %% Initialized:  [Session-7, SSL_NULL_WITH_NULL_NULL]
  XNIO-3 task-7, fatal error: 40: no cipher suites in common
  javax.net.ssl.SSLHandshakeException: no cipher suites in common
  %% Invalidated:  [Session-7, SSL_NULL_WITH_NULL_NULL]
  XNIO-3 task-7, SEND TLSv1.2 ALERT:  fatal, description = handshake_failure
  XNIO-3 task-7, WRITE: TLSv1.2 Alert, length = 2
  XNIO-3 I/O-1, fatal: engine already closed.  Rethrowing javax.net.ssl.SSLHandshakeException: no cipher suites in common
  XNIO-3 I/O-1, called closeInbound()
  XNIO-3 I/O-1, fatal: engine already closed.  Rethrowing javax.net.ssl.SSLException: Inbound closed before receiving peer's close_notify: possible truncation attack?
  XNIO-3 I/O-1, called closeOutbound()
  XNIO-3 I/O-1, closeOutboundInternal()
  </code></pre>