在Google App Engine中禁用TLS / SSL检查-Java

Question

My app is getting this error when accessing a HTTPS resource (using appengine-java-sdk-1.9.63 ):

javax.net.ssl.SSLHandshakeException: Could not verify SSL certificate for URL: https://some.where/
        at com.google.appengine.api.urlfetch.URLFetchServiceImpl.convertApplicationException(URLFetchServiceImpl.java:175)
        at com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java:45)
        at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.fetchResponse(URLFetchServiceStreamHandler.java:543)
        at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.getInputStream(URLFetchServiceStreamHandler.java:422)
        at com.google.apphosting.utils.security.urlfetch.URLFetchServiceStreamHandler$Connection.getResponseCode(URLFetchServiceStreamHandler.java:275)
        at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:656)
        at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:629)
        at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:261)
        at org.jsoup.helper.HttpConnection.get(HttpConnection.java:250)

What can be done so GAE would not check of SSL since in my current purpose for the app, it does not care if it connects via HTTP or HTTPS, so in my case I just want to disable SSL check.

Update:

I am running the application from Windows (Linux does not throw the error above)

Already I have modifiied the dev_appserver.cmd like this:

java -Ddeployment.security.TLSv1.1=false -Ddeployment.security.TLSv1.2=false -cp "%~dp0\..\lib\appengine-tools-api.jar" ^
    com.google.appengine.tools.KickStart ^
       com.google.appengine.tools.development.DevAppServerMain %*

Also in the application itself this is set:

FetchOptions fetchOptions = FetchOptions.Builder.doNotValidateCertificate();
HTTPRequest request = new HTTPRequest(getUrl, HTTPMethod.GET, fetchOptions)

What could be wrong with Windows that it throws the error whereas in Linux there is no problem?

Answer 1

The solution that worked for this problem is to update the JDK of the machine. Then after upgrading from Java 7 to Java 8, the SSLHandshakeException is not being thrown anymore.

Thus, problem solved.