Add end of RPC flags for fast authentication

Author: sharadraju

lib/thin/connection.js

@@ -692,6 +692,11 @@ class ThinConnectionImpl extends ConnectionImpl {
         fastAuthMessage.dataTypeMessage = dataTypeMessage;
         fastAuthMessage.authMessage = authMessage;
         await this._protocol._processMessage(fastAuthMessage);
+        if (fastAuthMessage.reNegotiate) {
+          // Fast Authentication failed.
+          await this._protocol._processMessage(dataTypeMessage);
+          await this._protocol._processMessage(authMessage);
+        }
       } else {
         await this._protocol._processMessage(protocolMessage);
         await this._protocol._processMessage(dataTypeMessage);

lib/thin/protocol/packet.js

@@ -35,6 +35,8 @@ const vector = require('../../impl/datahandlers/vector.js');
 const errors = require("../../errors.js");
 
 const TNS_BASE64_ALPHABET_ARRAY = Buffer.from("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", 'utf8');
+const FAST_AUTH_END_OF_RPC_VALUE = 0x800;
+const FAST_AUTH_END_OF_RPC_OFFSET = 0x8;
 
 /**
  * Class used for byte chunks used in the ChunkedBytesBuffer.
@@ -495,6 +497,10 @@ class WritePacket extends BaseBuffer {
     if (!finalPacket) {
       buf = Buffer.from(buf);
       this.startPacket();
+    } else {
+      // Write End of RPC bit in last packet used only for fastAuth Message.
+      this.buf.writeUInt16BE(FAST_AUTH_END_OF_RPC_VALUE,
+        FAST_AUTH_END_OF_RPC_OFFSET);
     }
     if (!this.nsi.ntAdapter) {
       errors.throwErr(errors.ERR_INVALID_CONNECTION);