openssl: Add tests for server-side NPN

openssl/src/ssl/tests.rs

@@ -292,3 +292,44 @@ fn test_connect_with_npn_successful_single_match() {
     // is used.
     assert_eq!(b"spdy/3.1", stream.get_selected_npn_protocol().unwrap());
 }
+
+/// Tests that when the `SslStream` is created as a server stream, the protocols
+/// are correctly advertised to the client.
+#[test]
+#[cfg(feature = "npn")]
+fn test_npn_server_advertise_multiple() {
+    let localhost = "127.0.0.1:15420";
+    let listener = TcpListener::bind(localhost).unwrap();
+    // We create a different context instance for the server...
+    let listener_ctx = {
+        let mut ctx = SslContext::new(Sslv23).unwrap();
+        ctx.set_verify(SslVerifyPeer, None);
+        ctx.set_npn_protocols(&[b"http/1.1", b"spdy/3.1"]);
+        ctx.set_certificate_file(
+                &Path::new("test/cert.pem"), X509FileType::PEM);
+        ctx.set_private_key_file(
+                &Path::new("test/key.pem"), X509FileType::PEM);
+        ctx
+    };
+    // Have the listener wait on the connection in a different thread.
+    thread::spawn(move || {
+        let (stream, _) = listener.accept().unwrap();
+        let _ = SslStream::new_server(&listener_ctx, stream).unwrap();
+    });
+
+    let mut ctx = SslContext::new(Sslv23).unwrap();
+    ctx.set_verify(SslVerifyPeer, None);
+    ctx.set_npn_protocols(&[b"spdy/3.1"]);
+    match ctx.set_CA_file(&Path::new("test/cert.pem")) {
+        None => {}
+        Some(err) => panic!("Unexpected error {:?}", err)
+    }
+    // Now connect to the socket and make sure the protocol negotiation works...
+    let stream = TcpStream::connect(localhost).unwrap();
+    let stream = match SslStream::new(&ctx, stream) {
+        Ok(stream) => stream,
+        Err(err) => panic!("Expected success, got {:?}", err)
+    };
+    // SPDY is selected since that's the only thing the client supports.
+    assert_eq!(b"spdy/3.1", stream.get_selected_npn_protocol().unwrap());
+}