simple mt5 trade copier - expert for MetaTrader 5

The EA is based on several key trading and technical concepts:

1. Trade Copying/Mirror Trading Concept:

• The fundamental idea is to replicate trading activity from one account (Master) to another account (Slave)
• This is useful for:
  • Fund managers managing multiple client accounts
  • Traders wanting to run same strategy across different brokers
  • Risk distribution across different brokers

2. Account Architecture:

• Two-tier system:
  • Master Account: Original source of trades
  • Slave Account(s): Copies/mirrors the master's positions
• Uses a file-based communication system between master and slave instances

3. Technical Implementation Methods:

• Binary File Communication:
  • Master writes position data to a binary file
  • Slave reads this file to sync positions
  • Uses common folder access for inter-terminal communication
  • Faster and more efficient than text-based methods

4. Position Management:

• Real-time position tracking
• Maintains three key aspects:
  • Open positions replication
  • Stop loss/Take profit synchronization
  • Position closure synchronization

5. Symbol Mapping:

• Handles different symbol names across brokers
• For example:
  • XAUUSD.ecn on one broker might be GOLD on another
  • Allows flexible symbol mapping for different broker conventions

6. Risk Management Principles:

• Maintains exact position sizes
• Preserves stop loss and take profit levels
• Ensures synchronized risk management across accounts

7. Operational Features:

• Regular polling (every 50ms) to check for changes
• Bi-directional verification:
  • Checks for new positions to copy
  • Verifies existing positions are still valid
  • Closes positions that no longer exist on master

8. Error Handling and Recovery:

• Manages common trading issues:
  • Failed order execution
  • Communication failures
  • Symbol availability issues
  • Price differences between brokers