tls.TLSSocket does not emit error event on handshake failure

[lekoder]

• Version: v6.5.0
• Platform: Linux 4.4.0-38-generic
• Subsystem: TLS/SSL

When upgrading net.Socket to tls.TLSSocket, if there is a handshake failure, no (documented) event is emited by the TLSSocket.

To reproduce:

var tls = require("tls");
var net = require("net");

var netServer = net.createServer(function (netSocket) {
    var TLSSocket = new tls.TLSSocket(netSocket, {
        isServer: true,
        server: netServer
    });
    TLSSocket.on("error", function (e) {
        console.log("TLS error", e);
    });
    netSocket.on("close", function () {
        console.log("Socket closed");
    });
}).listen(1337);

openssl s_client -connect 127.0.0.1:1337

Expected result:

TLS error Error: 140079908828992:error:1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher:../deps/openssl/openssl/ssl/s3_srvr.c:1417
Socket closed

Actual result:

Socket closed

There is undocumented event _tlsError emited, but it is both not documented not propagated to socket's error event.