I have been learning with WebSocket++ and built some of the server examples (Windows 10 Visual Studio 2019). The non-TLS examples work without issues, however, the TLS-enabled examples (echo_server_both.cpp and echo_server_tls.cpp) can't do the handshake. I am very new to web development in general so I know I must be doing something wrong with regards to the certificate and keys.
I am testing the servers with WebSocket King client, an extension of Google Chrome that connects correctly to other websocket servers like wss://echo.websocket.org and to my own localhost when I don't use TLS.
The echo_server_both example comes with a server.pem file, and the echo_server_tls example comes with server.pem and dh.pem. I have used the same files that come with the samples, and I have also tried generating and registering my own .pem files using openSSL. In both cases I get this when the client tries to connect:
[2021-06-29 20:51:21] [error] handle_transport_init received error: sslv3 alert certificate unknown
[2021-06-29 20:51:21] [fail] WebSocket Connection [::1]:63346 - "" - 0 asio.ssl:336151574 sslv3 alert certificate unknown
[2021-06-29 20:51:21] [info] asio async_shutdown error: asio.ssl:336462231 (shutdown while in init)
I discovered these errors after I edited handle_init() in tls.hpp, following a suggestion in another site, to look like this:
void handle_init(init_handler callback,lib::asio::error_code const & ec) {
if (ec) {
//m_ec = socket::make_error_code(socket::error::tls_handshake_failed);
m_ec = ec;
} else {
m_ec = lib::error_code();
}
callback(m_ec);
}
This change let the actual openSSL error to show in the console, otherwise it would show a generic "handshake failed" error.
I know I'm not doing what I should with the certificates, but I have no idea where else to look or what to do next. Can anyone here help please? Should I use the .pem files that come with the examples, or should I generate my own? in case I should generate my own, what would be the openSSL command to do that correctly and how do I tell my PC to recognize these as valid so that the server works?
Found the problem: WebSocket++ will not accept a self-signed certificate (the ones you can create directly in your own PC using OpenSSL or the Windows utilities). There is no way around it. You must have a valid, authority-validated and endorsed certificate. You can get such a certificate for free (valid only for 90 days) from https://zerossl.com/. The site has detailed instructions on how to request, obtain and install a certificate. After getting a valid certificate and installing it on my server, everything worked as it should.
I am getting javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake exception when I try to do HTTPS Post of a web service through internet. But same code works for other internet hosted web services. I tried many things, nothing is helping me. I posted my sample code here. Can anyone please help me to resolve this problem?
public static void main(String[] args) throws Exception {
String xmlServerURL = "https://example.com/soap/WsRouter";
URL urlXMLServer = new URL(xmlServerURL);
// URLConnection supports HTTPS protocol only with JDK 1.4+
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(
"xxxx.example.com", 8083));
HttpURLConnection httpsURLConnection = (HttpURLConnection) urlXMLServer
.openConnection(proxy);
httpsURLConnection.setRequestProperty("Content-Type","text/xml; charset=utf-8");
//httpsURLConnection.setDoInput(true);
httpsURLConnection.setDoOutput(true);
httpsURLConnection.setConnectTimeout(300000);
//httpsURLConnection.setIgnoreProxy(false);
httpsURLConnection.setRequestMethod("POST");
//httpsURLConnection.setHostnameVerifier(DO_NOT_VERIFY);
// send request
PrintWriter out = new PrintWriter(
httpsURLConnection.getOutputStream());
StringBuffer requestXML = new StringBuffer();
requestXML.append(getProcessWorkOrderSOAPXML());
// get list of user
out.println(requestXML.toString());
out.close();
out.flush();
System.out.println("XML Request POSTed to " + xmlServerURL + "\n");
System.out.println(requestXML.toString() + "\n");
//Thread.sleep(60000);
// read response
BufferedReader in = new BufferedReader(new InputStreamReader(
httpsURLConnection.getInputStream()));
String line;
String respXML = "";
while ((line = in.readLine()) != null) {
respXML += line;
}
in.close();
// output response
respXML = URLDecoder.decode(respXML, "UTF-8");
System.out.println("\nXML Response\n");
System.out.println(respXML);
}
Full stacktrace:
Exception in thread "main" javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:946)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1312)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1091)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)
at com.labcorp.efone.vendor.TestATTConnectivity.main(TestATTConnectivity.java:43)
Caused by: java.io.EOFException: SSL peer shut down incorrectly
at sun.security.ssl.InputRecord.read(InputRecord.java:482)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
... 8 more
Actually, there are two scenarios here. When I work as a standalone Java program I am getting the above exception. But when I try to execute in weblogic application server, I am getting the below exception: Any clue what could be the reason?
java.io.IOException: Connection closed, EOF detected
at weblogic.socket.JSSEFilterImpl.handleUnwrapResults(JSSEFilterImpl.java:637)
at weblogic.socket.JSSEFilterImpl.unwrapAndHandleResults(JSSEFilterImpl.java:515)
at weblogic.socket.JSSEFilterImpl.doHandshake(JSSEFilterImpl.java:96)
at weblogic.socket.JSSEFilterImpl.doHandshake(JSSEFilterImpl.java:75)
at weblogic.socket.JSSEFilterImpl.write(JSSEFilterImpl.java:448)
at weblogic.socket.JSSESocket$JSSEOutputStream.write(JSSESocket.java:93)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
at weblogic.net.http.HttpURLConnection.writeRequests(HttpURLConnection.java:192)
at weblogic.net.http.HttpURLConnection.getInputStream(HttpURLConnection.java:433)
at weblogic.net.http.SOAPHttpsURLConnection.getInputStream(SOAPHttpsURLConnection.java:37)
at com.labcorp.efone.service.impl.WorkOrderServiceImpl.processATTWorkOrder(ATTWorkOrderServiceImpl.java:86)
at com.labcorp.efone.bds.WorkOrderBusinessDelegateImpl.processATTWorkOrder(WorkOrderBusinessDelegateImpl.java:59)
at com.labcorp.efone.actions.ATTWorkOrderAction.efonePerformForward(ATTWorkOrderAction.java:41)
at com.labcorp.efone.actions.EfoneAction.efonePerformActionForward(EfoneAction.java:149)
at com.labcorp.efone.actions.EfoneAction.execute(EfoneAction.java:225)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:751)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:341)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at com.labcorp.efone.security.EfoneAuthenticationFilter.doFilter(EfoneAuthenticationFilter.java:115)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3367)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3333)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2220)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2146)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2124)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1564)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)
Exception: java.io.IOException: Connection closed, EOF detected
Java 7 defaults to TLS 1.0, which can cause this error when that protocol is not accepted. I ran into this problem with a Tomcat application and a server that would not accept TLS 1.0 connections any longer. I added
-Dhttps.protocols=TLSv1.1,TLSv1.2
to the Java options and that fixed it. (Tomcat was running Java 7.)
I faced the same problem and solved it by adding:
System.setProperty("https.protocols", "TLSv1,TLSv1.1,TLSv1.2");
before openConnection method.
Not an answer yet, but too much for a comment. This is clearly not a server cert problem; the symptoms of that are quite different. From your system's POV, the server appears to be closing during the handshake. There are two possibilities:
The server really is closing, which is a SSL/TLS protocol violation though a fairly minor one; there are quite a few reasons a server might fail to handshake with you but it should send a fatal alert first, which your JSSE or the weblogic equivalent should indicate. In this case there may well be some useful information in the server log, if you are able (and permitted) to communicate with knowledgeable server admin(s). Or you can try putting a network monitor on your client machine, or one close enough it sees all your traffic; personally I like www.wireshark.org. But this usually shows only that the close came immediately after the ClientHello, which doesn't narrow it down much. You don't say if you are supposed to and have configured a "client cert" (actually key&cert, in the form of a Java privateKeyEntry) for this server; if that is required by the server and not correct, some servers may perceive that as an attack and knowingly violate protocol by closing even though officially they should send an alert.
Or, some middlebox in the network, most often a firewall or purportedly-transparent proxy, is deciding it doesn't like your connection and forcing a close. The Proxy you use is an obvious suspect; when you say the "same code" works to other hosts, confirm if you mean through the same proxy (not just a proxy) and using HTTPS (not clear HTTP). If that isn't so, try testing to other hosts with HTTPS through the proxy (you needn't send a full SOAP request, just a GET / if enough). If you can, try connecting without the proxy, or possibly a different proxy, and connecting HTTP (not S) through the proxy to the host (if both support clear) and see if those work.
If you don't mind publishing the actual host (but definitely not any authentication credentials) others can try it. Or you can go to www.ssllabs.com and request they test the server (without publishing the results); this will try several common variations on SSL/TLS connection and report any errors it sees, as well as any security weaknesses.
A first step to diagnose the issue is by starting the client - and if you are running the server yourself, a private test instance of the server - by starting Java with the VM option:
-Djavax.net.debug=all
See also https://blogs.oracle.com/java-platform-group/entry/diagnosing_tls_ssl_and_https
I encountered a similar problem with glassfish application server and Oracle JDK/JRE but not in Open JDK/JRE.
When connecting to a SSL domain I always ran into:
javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
...
Caused by: java.io.EOFException: SSL peer shut down incorrectly
The solution for me was to install the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files because the server only understood certificates that are not included in Oracle JDK by default, only OpenJDK includes them.
After installing everything worked like charme.
JCE 7: http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
JCE 8: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
I think you are missing your certificates.
You can try generating them by using InstallCerts app. Here you can see how to use it:
https://github.com/escline/InstallCert
Once you get your certificate, you need to put it under your security directory within your jdk home, for example:
C:\Program Files\Java\jdk1.6.0_45\jre\lib\security
Let me know if it works.
I ran into a similar issue and found I was hitting the wrong port. After fixing the port things worked great.
In my case, I got this problem because I had given the server a non-existent certificate, due to a typo in the config file. Instead of throwing an exception, the server proceeded like normal and sent an empty certificate to the client. So it might be worth checking to make sure that the server is providing the correct response.
I experienced this error while using the Jersey Client to connect to a server. The way I resolved it was by debugging the library and seeing that it actually did receive an EOF the moment it tried to read. I also tried connecting using a web browser and got the same results.
Just writing this here in case it ends up helping anyone.
You May Write this below code insdie your current java programme
System.setProperty("https.protocols", "TLSv1.1");
or
System.setProperty("http.proxyHost", "proxy.com");
System.setProperty("http.proxyPort", "911");
Thanks to all for sharing your answers and examples. The same standalone program worked for me by small changes and adding the lines of code below.
In this case, keystore file was given by webservice provider.
// Small changes during connection initiation..
// Please add this static block
static {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier()
{ #Override
public boolean verify(String hostname, SSLSession arg1) {
// TODO Auto-generated method stub
if (hostname.equals("X.X.X.X")) {
System.out.println("Return TRUE"+hostname);
return true;
}
System.out.println("Return FALSE");
return false;
}
});
}
String xmlServerURL = "https://X.X.X.X:8080/services/EndpointPort";
URL urlXMLServer = new URL(null,xmlServerURL,new sun.net.www.protocol.https.Handler());
HttpsURLConnection httpsURLConnection = (HttpsURLConnection) urlXMLServer .openConnection();
// Below extra lines are added to the same program
//Keystore file
System.setProperty("javax.net.ssl.keyStore", "Drive:/FullPath/keystorefile.store");
System.setProperty("javax.net.ssl.keyStorePassword", "Password"); // Password given by vendor
//TrustStore file
System.setProperty("javax.net.ssl.trustStore"Drive:/FullPath/keystorefile.store");
System.setProperty("javax.net.ssl.trustStorePassword", "Password");
I encountered this problem with Java 1.6. Running under Java 1.7 fixed my particular rendition of the problem. I think the underlying cause was that the server I was connecting to must have required stronger encryption than was available under 1.6.
I had the same error, but in my case it was caused by the DEBUG mode in Intellij IDE. The debug slowed down the library and then server ended communication at handshake phase. The standard "RUN" worked perfectly.
I run my application with Java 8 and Java 8 brought security certificate onto its trust store. Then I switched to Java 7 and added the following into VM options:
-Djavax.net.ssl.trustStore=C:\<....>\java8\jre\lib\security\cacerts
Simply I pointed to the location where a certificate is.
I was using the p12 which I exported with Keychain in my MacBook, however, it didn't work on my java-apns server code. What I had to do was to create a new p12 key as stated here, using my already generated pem keys:
openssl pkcs12 -export -in your_app.pem -inkey your_key.pem -out your_app_key.p12
Then updated the path to that new p12 file and everything worked perfectly.
How you would solve it is by going to
Settings
Search"Network"
Choose "Use IDEA general proxy settings as default Subversion"
As per https://kb.informatica.com/solution/23/Pages/69/570664.aspx adding this property works
CryptoProtocolVersion=TLSv1.2
With base at TLSv1.2 ALERT: fatal, handshake_failure I obtained after debug with this thread previos answer
-Djavax.net.debug=all
I went to https://www.ssllabs.com/and observed that the web server required a SSLv3 connection deprecate at june 2015, and deprecated at JDKu31 Release notes
I edited the ${java_home}/jre/lib/security/java.security at the line
jdk.tls.disabledAlgorithms=SSLv3, RC4, DES, MD5withRSA, DH keySize < 1024,
EC keySize < 224, 3DES_EDE_CBC, anon, NULL
to
jdk.tls.disabledAlgorithms= RC4, DES, MD5withRSA, DH keySize < 1024,
EC keySize < 224, 3DES_EDE_CBC, anon, NULL
As a final step I got this error
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target [javax.net.ssl.SSLHandshakeException]
I fixed this intalling the cert with the java keytool, following this answer PKIX path building failed” and “unable to find valid certification path to requested target”
I get this error when specifying a https url and in the same url explicitly specifying an http port (instead of an https port). Removing the explicit port :8080 solved the issue for me.
Adding certificates to Java\jdk\jre\lib\security folder worked for me. If you are using Chrome click on the green bulb [https://support.google.com/chrome/answer/95617?p=ui_security_indicator&rd=1] and save the certificate in security folder.
I faced the same issue once. I think its because of the URL
String xmlServerURL = "https://example.com/soap/WsRouter";
Check whether its a proper one or not ??
javax.net.ssl.SSLHandshakeException is because the server not able to connect to the specified URL because of following reason-
Either the identity of the website is not verified.
Server's certificate does not match the URL.
Or, Server's certificate is not trusted.
This is what solve my problem.
If you are trying to use debugger make sure you breakpoint is not on URL or URLConnection just put your breakpoint on BufferReader or inside while loop.
If nothing works try using apache library http://hc.apache.org/index.html.
no SSL, no JDK update needed, no need to set properties even, just simple trick :)