Using TLSv1.2 with webread

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Andrew Stamps
Andrew Stamps 2018-5-17
编辑： MathWorks Support Team 2024-5-21
I have been consuming a RESTful API for a secure web service my company supports using webread. However, they recently disabled TLSv1 connections for security reasons, and they now require TLSv1.1 or TLSv1.2. This seems to have broken my code. Is anyone aware of a way to change settings such that TLSv1.1 or TLSv1.2 would be used with webread or am I looking at trying to replicate this functionality using .NET?
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Paolo
Paolo 2018-5-18
weboptions allows you to add HTTP headers. You can add the HTTP header you require to weboptions with the 'KeyName' and 'KeyValue' pairs.
Alternatively, you can use 'curl' which allows you to specify directly the tls version.

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Aylin
Aylin 2024-5-21
编辑：MathWorks Support Team 2024-5-21
For MATLAB R2019b and newer, webread natively supports TLS >= 1.1. For MATLAB R2019a and older, TLS 1.2 support can be enabled in MATLAB versions which use Java 1.7 by adding the following Java startup option: -Dhttps.protocols=TLSv1.2 to a java.opts file and then restarting MATLAB. Please refer to the following documentation page for more information on creating a java.opts file and specifying MATLAB's JVM startup options: https://www.mathworks.com/help/matlab/matlab_env/java-opts-file.html
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Ricardo MF
Ricardo MF 2021-8-19
Dear Rylan, I have an R2014a matlab version and java Version: Java 1.7.0_11-b21.
I am trying to enable the TLS 1.2 support using your suggested option '-Dhttps.protocols=TLSv1.2'. I have not found an java.opts file in my installed version, so I created one and inserted at the root folder but it seems matlab does not load it. Is there another method to configure this protocol into the java at matlab? tks in advance
Ricardo MF
Ricardo MF 2021-8-19
Problem solved. Matlab incorporated the TLS instruction as suggested and solved the problem with urlread/urlwrite. Tks a lot. Best regards.

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