Problem

The Hipchat client fails to connect to either Hipchat Server or hipchat.com, in order to get more details about, stop Hipchat and run it again as follows:

hipchat4 > ~/Desktop/hipchat.log

The above step will be re-directing all logs to ~/Desktop/hipchat.log and the following error is thrown:

Warning: [12:57:35][qt.network.ssl][:0] QSslSocket: cannot call unresolved function SSLv23_client_method
Warning: [12:57:35][qt.network.ssl][:0] QSslSocket: cannot call unresolved function SSL_library_init
[12:57:35][void AuthHelper::handleReplyFinished(QNetworkReply*):315] oAuth Token error: QNetworkReply::NetworkError(UnknownNetworkError) : "Error creating SSL context (error:140A90C4:SSL routines:func(169):reason(196))"
[12:57:35][void AuthHelper::handleReplyFinished(QNetworkReply*):359] throwing away the login data and going back to landing page

Cause

This issue is caused  by a discrepancy between the OpenSSL version the QT library is compiled against vs the Debian OpenSSL. 

Resolution

1. Install version 1.0.x of OpenSSL: 

   sudo apt-get install libssl1.0.2 

   Alternatively, download the OpenSSL 1.0.2 Debian package from https://packages.debian.org/sid/amd64/libssl1.0.2/download and install it manually: 

   sudo apt install /path/to/libssl1.0.2_1.0.2l-2_amd64.deb

2. Force Hipchat to use the newly installed version of OpenSSL: 

    ln -s /usr/lib/x86_64-linux-gnu/libssl.so.1.0.2 /opt/HipChat4/lib/libssl.so