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Questions tagged [handshake]

Anything related to handshaking in telecommunications, i.e. a process of automatic (software or hardware) negotiation of communication parameters between two interconnected devices.

Anything related to handshaking in telecommunications, i.e. a process of automatic (software or hardware) negotiation of communication parameters between two interconnected devices.

See Wikipedia page on handshaking.

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Handshake error when trying to connect to websocket using socket.io c++ library

I am trying to connect to websocket using socket.io c++ library: sio::client h; h.connect("ws://echo.websocket.org"); Again: h.socket()->on("connect", [&](sio::event& ev) { HIGHLIGHT("TEST"); }); …
Jonhtra
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sslv3 alert handshake failure with LWP::UserAgent

I'm trying to make an https request using LWP::UserAgent: #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; my $login_url = 'https://www.icscards.nl/abnamrogb/login/login'; my $ssl_options = { SSL_version => 'tlsv1', verify_hostname =>…
Jure Merhar
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Get OpenSSL custom extension added by client

I've been trying to get custom client extensions on client hello but I don`t know how to issue a method like get_custom_ext or similar. Firstly we add the extension on the client side with SSL_CTX_set_custom_cli_ext int…
Mzdp
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Shake gesture not working iOS

I have used collectionView and also implemented pull to sync (pull_Down_To_Get_Data_From_Server) in my ViewController(named : "DashboardViewController"). I tried the shake gesture code(given below) in my DashboardViewController and its not working…
Ummar Ahmed
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Checksum incorrect while doing ssh

Suddenly I was not able to ssh to any machine. I thought it to be my router/network issue & I tried it with different network but the result was same. I took tcp dump on both server & client and found that the checksum is incorrect. Client is on…
Ishan Jain
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Apache responding very slow on TLS handshake

Having issue after installing SSL on my server. By trace curl -v -o delete.txt --trace-time https://asd.com 10:45:51.449913 * Rebuilt URL to: https://asd.com/ 10:45:51.450034 * Hostname was NOT found in DNS cache % Total % Received % Xferd …
Deep Changer
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What does this HTTPS handshake error mean and how can I fix it?

We have a system that connects to several different APIs operated by different vendors. It uses similar code to connect to all of them, but with two of the APIs (out of 8) we get intermittent HTTPs errors. We never have any problems with the others.…
Sean Clark Hess
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SocketCluster Middleware HandShake with promise

Im building an app that serve both http and ws. Users login first over HTTP to a Laravel Server. That returns a JWT that is used to allow login over WS. Ihv added a MIDDLEWARE_HANDSHAKE that gets the token and make a request to Laravel Server to ask…
Tom Vega
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Retrofit: Android app fails SSL handshakes when launched on API21+ devices

I am building an App that fetches some JSON data via HTTPS, using Retrofit with a custom OkHttp client. It works fine on KitKat. Once I move to Android 5, 6 or 7, SSL handshakes fail. The server supports TLSv1 and nothing else. It also uses an…
El Pollo Diablo
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com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: Handshake failed

Using volley for basic network operations,getting no connection handshake error when adding the project as an module. While the module works fine in some another project. On R&D, added retrypolicy but no use still getting the same error. Here is my…
Ritu Nagpal
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ClientHello TLSv1 and not TLSv1.2

I have this snippet of code public static void main(String...args) { System.setProperty("javax.net.debug", "all"); System.setProperty("https.protocols","TLSv1.2,TLSv1.1,TLSv1"); RestTemplate restTemplate = new…
timpham
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How to generate certificate exception using NSStream during handshake

I am using NSStream to do the handshake as server, handshake is successful there is not issue. i get the client certificate and i validate and store it in to keychain. Now problem is i want to throw exception and it has to be sent through the stream…
Gyanendra
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Git failing with "Server aborted the SSL Handshake"

I am working with a Bitbucket repository and simply trying to push my code. I see this error message only when working on my home wifi (AT&T U-Verse): fatal: unable to access 'https://': Server aborted the SSL handshake I…
Mitchell Griest
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Determine Diffie-Hellman "Parameters" Length for a TLS handshake in Java

I'd like to make an HTTPS connection to a server and, if I'm using non-ephemeral DH key exchange, I'd like to know what the parameters are for that connection. Actually, I don't really care if it's ephemeral or not. What I'm looking for is the…
Christopher Schultz
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Intermittent SSL handshake error with Apache HTTP Server

I am seeing intermittent SSL handshake errors with Java clients and browsers accessing a site through an Apache HTTP server. This happens rarely, but it breaks builds and impacts user experience every day. The server is configured to establish a…
JanDasWiesel
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