Details
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Bug
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Resolution: Fixed
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P3: Somewhat important
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None
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5.14.2
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None
Description
I want to write a small app to control my IKEA Tradfri LightBulbs. Just for fun. But the following code snippet uses DTLS version 1.0 instead of 1.2 (see attached Wireshark Screenshot).
The consequence is following error message:
qt.coap.connection: Handshake error: "Im Ablauf des SSL-Protokolls ist ein Fehler aufgetreten: error:14102410:SSL routines:dtls1_read_bytes:sslv3 alert handshake failure"
m_coapClient = new QCoapClient(QtCoap::SecurityMode::PreSharedKey, this);
QCoapSecurityConfiguration configuration;
configuration.setPreSharedKeyIdentity("Client_identity");
configuration.setPreSharedKey("xxxxxxxxxxxxx");
m_configuration = configuration;
m_coapClient->setSecurityConfiguration(m_configuration);
QCoapRequest request;
QUrl url;
url.setHost("192.168.10.94");
url.setPort(5684);
url.setPath("/15011/9063");
request.setUrl(url);
request.setPayload("{\"9090\":\"frime\"}");
m_coapClient->post(request);
OS: Ubuntu 20.04 LTS
Qt: 5.14.2
QSslSocket::sslLibraryBuildVersionString() returns OpenSSL 1.1.1f 31 Mar 2020
Forum discussion: https://forum.qt.io/topic/114880/qtcoap-psk-put-request-to-ikea-tradfri-bridge-doesn-t-work-strange-ssl-errors
