Below is the code snippet to fix the issue within my legacy JAVA (1.7) server, using raw HttpsURLConnection object
SSLContext ssl = SSLContext.getInstance("TLSv1.2");
ssl.init(null, null, new SecureRandom());
sslSocketFactory = ssl.getSocketFactory();
HttpsURLConnection con = (HttpsURLConnection) dataUrl.openConnection();
con.setSSLSocketFactory(sslSocketFactory);
con.setRequestMethod("POST");
con.setRequestProperty("content-type", "text/json");
con.setRequestProperty("Proxy-Connection", "Keep-Alive");
Meegan
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