我正在调试Spring Boot应用程序中的读取超时问题。令人惊讶的是，同一台机器上的其他应用程序中的相同代码正在工作。我不知道是SSL握手还是应用程序读取的问题。
有SSL经验的人能告诉我SSL握手或应用程序的问题吗？
*** ECDH ServerKeyExchange
Signature Algorithm SHA256withRSA
Server key: Sun EC public key, 256 bits
public x coord: 29542406192106943339474754606390399164782715617307032715472057145354950567400
public y coord: 79571066831123360733094408216631886961080379522778654162313628092705655634054
parameters: secp256r1 [NIST P-256, X9.62 prime256v1] (1.2.840.10045.3.1.7)
http-nio-8080-exec-2, READ: TLSv1.2 Handshake, length = 4
*** ServerHelloDone
*** ECDHClientKeyExchange
ECDH Public value: { 4, 9, 60, 230, 143, 12, 133, 160, 181, 201, 189, 200, 105, 7, 87, 100, 204, 181, 150, 182, 224, 126, 143, 197, 242, 190, 28, 207, 207, 134, 161, 202, 148, 213, 204, 168, 189, 107, 68, 115, 175, 56, 137, 133, 48, 120, 162, 168, 254, 239, 73, 93, 35, 67, 10, 87, 112, 156, 143, 169, 115, 176, 212, 41, 84 }
http-nio-8080-exec-2, WRITE: TLSv1.2 Handshake, length = 70
SESSION KEYGEN:
PreMaster Secret:
0000: B1 95 73 21 31 9C 64 04 4D 60 92 E4 D5 8F 1C A6 ..s!1.d.M`......
0010: FD 1A E9 3D 27 2E A5 DC 18 37 72 36 02 EC 54 98 ...='....7r6..T.
CONNECTION KEYGEN:
Client Nonce:
0000: 5F 37 D9 C2 BD 34 43 7E AF 6F 03 04 96 2C 63 CE _7...4C..o...,c.
0010: B3 11 D0 58 10 B2 3C 78 E6 8A 7B 4E E3 03 FA 7F ...X..<x...N....
Server Nonce:
0000: 8E BC 68 EE 18 B4 42 FA 4E 27 17 2B B9 42 3E A8 ..h...B.N'.+.B>.
0010: BB 31 80 35 C1 7A 83 B3 44 4F 57 4E 47 52 44 01 .1.5.z..DOWNGRD.
Master Secret:
0000: 32 F6 E3 7E BC 84 D1 2E 15 8F 8C EB 48 DC F1 09 2...........H...
0010: A5 BB 43 EA F5 96 06 57 8E 3B 94 9B 61 A0 A3 88 ..C....W.;..a...
0020: B5 28 45 8C F2 D9 B3 B1 A6 99 49 95 1D D0 AB FE .(E.......I.....
... no MAC keys used for this cipher
Client write key:
0000: E8 BC 4E FC 36 47 F6 0A C8 59 18 C2 6B 21 02 46 ..N.6G...Y..k!.F
Server write key:
0000: 74 C0 13 2A FA 47 9E 92 B3 10 3E 44 8E D4 EA 6E t..*.G....>D...n
Client write IV:
0000: 30 66 E6 DC 0f..
Server write IV:
0000: 26 21 4D F6 &!M.
http-nio-8080-exec-2, WRITE: TLSv1.2 Change Cipher Spec, length = 1
*** Finished
verify_data: { 113, 74, 102, 42, 210, 89, 9, 19, 236, 155, 7, 215 }
***
Padded plaintext before ENCRYPTION: len = 16
0000: 14 00 00 0C 71 4A 66 2A D2 59 09 13 EC 9B 07 D7 ....qJf*.Y......
http-nio-8080-exec-2, WRITE: TLSv1.2 Handshake, length = 40
http-nio-8080-exec-2, handling exception: java.net.SocketTimeoutException: Read timed out
org.apache.http.conn.ConnectTimeoutException: Connect to api.eu.mailjet.com:443 [api.eu.mailjet.com/35.187.79.8] failed: Read timed out
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:151)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at com.walmart.services.hermes.connectors.mailjet.config.TestController.run2(TestController.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
at java.net.SocketInputStream.read(SocketInputStream.java:170)
at java.net.SocketInputStream.read(SocketInputStream.java:141)
at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
at sun.security.ssl.InputRecord.read(InputRecord.java:503)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:973)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
... 65 more
如果同一代码来自运行在同一台机器上的不同应用程序，并且也在端口443连接到api.eu.mailjet.com，那么这将不是防火墙的问题。请比较两个应用程序上的连接超时值，然后通过增加超时值重试。