32 questions
2
votes
0
answers
77
views
OkHttpClient Client not sending server-name extension in SSL Client handshake
I have a Springboot server with two ssl self signed certificates configured for different hostnames. One certificate assigned to hostname localhost. Another assigned as fallback, so any hostname other ...
- 755
0
votes
1
answer
53
views
Code after suspended function call not executed in Kotlin coroutine
I'm using Kotlin coroutines to manage a TLS socket connection. In my minimal version of sendMessageToServerTest, I call connectTest() when the socket is not connected, then log the result. However, ...
- 223
0
votes
0
answers
339
views
No supported CertificateVerify signature algorithm for EC key
When connecting to an internal device with a JDK17 with TLS v1.2, the handshake fails with this error:
No supported CertificateVerify signature algorithm for EC key
My key uses the EC "secp256r1&...
- 11k
0
votes
1
answer
187
views
Tomcat - Java11 - Unable to present ECDSA certificate during SSL handshake as client
Recently, our organisation migrated one of our Java application codes from Java 8 to Java 11. Now, we are facing one unique issue with our application. Our tomcat server is running into a strange ...
- 302
3
votes
1
answer
253
views
Deploying a Ear and Web application under IBM RAD and IBM Websphere but SSL error can't get rid of
So I have a web application and ear want to deploy that code but first cannot get past the SSL error at startup for the Websphere server.
It puts the websphere server in an invalid state. Starting ...
- 11.8k
0
votes
1
answer
499
views
ssl handshake with KMS server taking time(50sec) for a few requests event though socket connection timeout is 2000 as per logs
We are using AwsCrypto aws java sdk for encryption and decryption. We follow the pattern mentioned in this aws doc for using the same with data-key cache enabled.
For a few requests I am seeing ...
- 3,470
2
votes
1
answer
2k
views
SSL_do_handshake failed ( routines::sslv3 alert handshake failure:SSL alert number 40) while SSL handshaking to upstream
I have a very simple reserve proxy pointing to custom webflow url.
A blog is configured on a custom webflow url [https://webflow.example.com] and it is working fine in browser. There is no ssl error.
...
- 168
2
votes
0
answers
646
views
Is it possible/How to log SSL handshake information in .NET
I need to log as much as possible information about SSL Handshake using .NET for mTLS.
This is possible in Java by using System.setProperty("javax.net.debug", "ssl:handshake");
Is ...
- 180
1
vote
0
answers
698
views
TLS HandShake on Windows 7 32 bit doesn't work with NET Framework 4 and 7
I'm trying to call a web service over HTTPS from a Windows 7 32bit system using a dot-net 4.6 and/or a self-contained single-file dot-net 7 application.
But I'm getting the following exceptions:
...
- 11
2
votes
1
answer
992
views
How to avoid SSL Handshake using OkHttp Android
Overview
I am using the below version of Okhttp com.squareup.okhttp3:okhttp:4.9.3
I need to execute multiple HttpRequests at one go when a transaction happens.
I have taken Singleton OkHttpClient to ...
- 2,403
1
vote
1
answer
3k
views
Below tls handshake, What is the problem?
An app.zeplin.io:443 connection error is occurring in the vpn environment.
In the same vpn environment, access to github.com:443 or stackoverflow.com:443 is normal.
I'm a little lacking in background ...
- 13
1
vote
0
answers
175
views
TLS Handshake errors in Iran
I live in Iran, which is a dictatorship with a lot of internet censorship. My problem is TLS Handshake error that occurs with certain internet operators (Like MTN Irancell). In certain GNU/Linux ...
- 33
0
votes
1
answer
432
views
C++ Windows Winsock SChannel - AcquireCredentialsHandleW failing - due to UNISP_NAME or SChannel?
I'm trying to implement an SSL handshake in C++ x64 unicode in Windows using winsock, schannel, security etc. Example host is google.com.
I created a SOCKET and could connect via WSAConnectByNameW.
I'...
- 21
1
vote
0
answers
760
views
Kubernetes: curl works on physical node but NOT in pod
I installed kubernetes (1 controller node and 4 worker nodes).
O.S. Ubuntu 22.04.1
kubernetes v1.26.1
Calico v3.25.0
From a POD I need to get authenticate to an external server.
The request works ...
- 41
1
vote
1
answer
245
views
Getting fatal: engine already closed. Rethrowing javax.net.ssl.SSLHandshakeException: no cipher suites in common on spring boot embedded jetty server
I have spring boot appilcation containing rest APIs running on embedded jetty. I am trying to hit it by another java application which runs on TLSv1 but is getting below error:
fatal: engine already ...
- 53
0
votes
1
answer
666
views
JAVA Certificates - Programmatically SSL handshake fails and import fails
I wrote a routine for the programmatic retrieval of certificates for SSL connections (to be used for example with restTemplate) and the programmatic import of these certificates to import them into ...
