Remove ALPNHelper, we don't support JDK 8 anymore

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/SSLModuleBuiltins.java

@@ -70,7 +70,6 @@
 import com.oracle.graal.python.builtins.PythonBuiltins;
 import com.oracle.graal.python.builtins.objects.exception.OSErrorEnum;
 import com.oracle.graal.python.builtins.objects.module.PythonModule;
-import com.oracle.graal.python.builtins.objects.ssl.ALPNHelper;
 import com.oracle.graal.python.builtins.objects.ssl.CertUtils;
 import com.oracle.graal.python.builtins.objects.ssl.SSLCipher;
 import com.oracle.graal.python.builtins.objects.ssl.SSLCipherSelector;
@@ -222,7 +221,7 @@ public void postInitialize(Python3Core core) {
         // We have ECDH ciphers, but we don't yet expose the methods that let you pick the curve
         module.setAttribute("HAS_ECDH", false);
         module.setAttribute("HAS_NPN", false);
-        module.setAttribute("HAS_ALPN", ALPNHelper.hasAlpn());
+        module.setAttribute("HAS_ALPN", true);
         module.setAttribute("HAS_SSLv2", false);
         boolean hasSSLv3 = supportedProtocols.contains(SSLProtocol.SSLv3);
         module.setAttribute("HAS_SSLv3", hasSSLv3);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ssl/ALPNHelper.java

@@ -222,8 +222,8 @@ static SSLEngine createSSLEngine(Frame frame, PConstructAndRaiseNode constructAn
         }
         parameters.setCipherSuites(enabledCipherNames);
 
-        if (ALPNHelper.hasAlpn() && context.getAlpnProtocols() != null) {
-            ALPNHelper.setApplicationProtocols(parameters, context.getAlpnProtocols());
+        if (context.getAlpnProtocols() != null) {
+            parameters.setApplicationProtocols(context.getAlpnProtocols());
         }
         if (serverMode) {
             switch (context.getVerifyMode()) {
@@ -922,9 +922,6 @@ abstract static class SetAlpnProtocols extends PythonBinaryClinicBuiltinNode {
         Object setFromBuffer(VirtualFrame frame, PSSLContext self, Object buffer,
                         @CachedLibrary("buffer") PythonBufferAccessLibrary bufferLib) {
             try {
-                if (!ALPNHelper.hasAlpn()) {
-                    throw raise(NotImplementedError, "The ALPN extension requires JDK 8u252 or later");
-                }
                 byte[] bytes = bufferLib.getInternalOrCopiedByteArray(buffer);
                 int len = bufferLib.getBufferLength(buffer);
                 self.setAlpnProtocols(parseProtocols(bytes, len));

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ssl/SSLContextBuiltins.java

@@ -414,10 +414,7 @@ Object get(PSSLSocket socket) {
     abstract static class SelectedAlpnProtocol extends PythonUnaryBuiltinNode {
         @Specialization
         static Object get(PSSLSocket socket) {
-            String protocol = null;
-            if (ALPNHelper.hasAlpn()) {
-                protocol = ALPNHelper.getApplicationProtocol(socket.getEngine());
-            }
+            String protocol = socket.getEngine().getApplicationProtocol();
             return protocol != null ? protocol : PNone.NONE;
         }
     }