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KDT750 Price Verification System
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AML KDT750 Price Verification System User Manual
AML Computer hardware
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Table of contents
Document Outline
About this Document
Introduction
Chapter Descriptions
Chapter 1: Getting Started
Theory of Operation
Communication Protocol Overview
APL: AML Price Lookup Protocol
APL via TCP
APL via TCP Features
APL via HTTP
APL via HTTP POST Features
Chapter 2: APL
Transaction Overview
General Data Format
Lookup Request from Client to Server
Client to Server Event Names
Example APL Client to Server Events
Lookup Reply from Server to Client
Output Pairs and Action Pairs
Special Output Pairs
Available Action Pairs
Formatting Text Output
Example Field Format Pair
Chapter 3: Using APL Over HTTP
Overview
HTTP POST
POST Reply
URL Encoding Data
Example Transactions
Example Server Source Code
Chapter 4: Using APL Over a TCP Socket
Packet Format
General Payload Format
Lookup Request Example Packets
Lookup Reply Example Packets
Example APL Server Design
Server-side Source Code
Chapter 5: PCDemo - APL Client Application
Overview
PCDemo Operational Loop
Command Line Interface
Local Image Slide Show
Lookup Screen Basics
Lookup Screen Background and Error Images
Text Fields
Special Text Fields
PRC Field Fonts
Colors
Example PCDemo Implementation
Appendix A: Packet Examples with Screenshots
Example 1 – Price Lookup via HTTP Post
Client Lookup POST
Server Reply
Example 2 – MSR Read via HTTP POST
Client Lookup POST
Server Reply
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