ms-tds protocol and test suite - microsoft · ms-tds protocol and test suite introduction baoming...

MS-TDS Protocol and Test Suite Introduction

Baoming Yu

SQL OIPI Test Development Team

Agenda

TDS Introduction

Transport Layers

Typical Message Sequence

Typical Protocol Objects

Test Suite Overview

Test Suite Architecture

Resource

What is TDS?The Tabular Data Stream (TDS) protocol is an application layer request/response protocol that facilitates interaction with a database server and provides for the following:

✓ Authentication and channel encryption negotiation.

✓ Specification of requests in SQL (including Bulk Insert).

✓ Invocation of a stored procedure or user-defined function,

also known as a remote procedure call (RPC).

✓ The return of data.

✓ Transaction manager requests.

How does TDS work?

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Time Line

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Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource

The TDS protocol does not prescribe a specific underlying transport protocol to use on the Internet or on other networks. TDS only presumes a reliable transport that guarantees in-sequence delivery of data.

Transport Layers

The chosen transport can be either stream-oriented or message-oriented. If a message-

oriented transport is used, any TDS packet sent from a TDS client to a TDS server MUST be

contained within a single transport data unit.

The current version of the TDS protocol has implementations over the following transports:

✓ TCP [RFC793].

✓ A reliable transport over the Virtual Interface Architecture (VIA) interface [VIA2002].

✓ Named Pipes [MSDN-NP].

✓ Shared memory [MSDN-TDSENDPT].

Transport LayersTransport LayersOptionally, the TDS protocol has implementations for the following two protocols on top of the preceding transports:

✓ Transport Layer Security (TLS)

[RFC2246]/Secure Socket Layer (SSL), in

case TLS/SSL encryption is negotiated.

✓ Session Multiplex Protocol (SMP) [MC-

SMP], in case the Multiple Active Result

Sets (MARS) feature [MSDN-MARS] is

requested.

TDS

Network Transport(TCP/IP)

Demo

FOR MARS

Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource

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TLS

/SSL

Tra

nsp

ort

Lay

er T

LS/S

SL T

ransp

ort Laye

r

Typical Message Sequence (Pre-login)

Created connection successfully (Pre-login state)

Initial Pre-Login Request with ENCRYPTION_ON

Initial Pre-Login Response with ENCRYPTION_ON

Login state

TLS Exchange 1 Request

TLS Exchange 1 Response

TLS Exchange 2 Request

TLS Exchange 2 Response

TLS Handshakes

• Client Hello

• Client Key Exchange• Change Cipher Spec• Client Finished Message• …

• Server Hello• Server Certificate• Server Hello Done• …

• Change Cipher Spec• Server Finished Message

Typical Message Sequence (Login State)

Created connection successfully (Pre-login state)

Login7 Request with SPNEGO Exchange 1

SPNEGO Exchange 1 Response

SPNEGO Exchange 2 Request

Login7 Response (LOGINACK)

Post-Login Success State

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Typical Message Sequence (Post-Login Success)


(Server is now ready to accept command from client)

SQL Command Request

Table Response

SQL Command Request

Table Response with attention acknowledgement

Attention Request



Typical Message Sequence (Post-Login Success)Post-Login Success State


Remote Procedure Call Request

Table Response

Remote Procedure Call Request


Attention Request





Transaction Manager Request

Table Response

Transaction Manager Request


Attention Request





SQL Command with Insert Bulk

Table Response

SQL Command with Binary Data (Bulk Load Data)

Table Response



SQL Command with Insert Bulk

Table Response

SQL Command with Binary Data (Bulk Load Data)


Attention Request

Demo

FOR BULK INSERT

Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource


LOGIN7: Defines the authentication rules for use between client and server.

• Packet Header type 0x10.• The length of a LOGIN7 stream

MUST NOT be longer than 128K-1(byte) bytes.

• …

LOGINACK: Used to send a response to a login request (LOGIN7) to the client.

LOGINACK

The identifier of the stream LOGINACK

The total length of the stream LOGINACK

The interface type accepted by server

The TDS version used by server side

The server name

The server version number


Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource

Test Suite Production Workflow

Test Suite(Simulates protocol client)

Requirement SpecificationOpen Specification

Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource


Test Case

Protocol Adapter

SUT Control Adapter

Transport Layer

Server

SUT

SQL Server

Client

Agenda

TDS Introduction

Transport Layers



Test Suite Overview


Resource

Resource

MS-TDS Protocol:

https://docs.microsoft.com/en-us/openspecs/windows_protocols/MS-

TDS/b46a581a-39de-4745-b076-ec4dbb7d13ec

TLS/SSL Details:

https://docs.microsoft.com/en-us/previous-versions/windows/it-

pro/windows-server-2003/cc785811(v=ws.10)

Named Pipes:

https://docs.microsoft.com/en-us/windows/desktop/ipc/named-pipes

https://docs.microsoft.com/en-us/openspecs/windows_protocols/MS-TDS/b46a581a-39de-4745-b076-ec4dbb7d13ec

https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc785811(v=ws.10)

https://docs.microsoft.com/en-us/windows/desktop/ipc/named-pipes

ms-tds protocol and test suite - microsoft · ms-tds protocol and test suite introduction baoming...

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