MQTT Five — MQTT 5.0 Client Library for MetaTrader 5
Info
The MQTT Five — MQTT 5.0 Client Library for MetaTrader 5 is a Library for MetaTrader 5 that mqtt five is an mqtt 5. 0 client library for MQL5, allowing MetaTrader 5 expert advisors and scripts to connect to MQTT brokers such as Mosquitto, EMQX, and HiveMQ.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use MQTT Five — MQTT 5.0 Client Library for MetaTrader 5
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
MQTT Five is an MQTT 5.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: balance reset - another powerful library for MetaTrader 5 traders.
MQTT Five is an MQTT 5.0 client library for MQL5, allowing MetaTrader 5 expert advisors and scripts to connect to MQTT brokers such as Mosquitto, EMQX, and HiveMQ. This library enables publishing prices and signals, receiving commands from external systems, and monitoring the status of expert advisors.Also recommended: ticks short - similar library with strong performance on MetaTrader 5.
No external DLLs are required, as it is a pure MQL5 implementation with its own socket API, supporting the MQTT v5.0 protocol.
Key features include:
- QoS 0, 1, 2 with automatic retry of undelivered messages
- CONNECT/CONNACK properties: session duration, maximum number of packets accepted, maximum number of topic aliases
- Delayed publication queues
- Topic aliases to reduce traffic on duplicate topics
- Flow control with quota management for the maximum volume of data received
- Subscription options: no_local, retain_as_published, retain_handling
- TLS/SSL, binary payload, UTF-8 support
To install, copy the 5 files from the archive into the MQL5/Include/MQTTFive/ folder and include the MQTTClient.mqh file in your code.
Example usage includes publishing a price and subscribing to signals. The library provides several main methods, including Connect, Disconnect, ForceDisconnect, Publish, Subscribe, Unsubscribe, Loop, and SetCallback.
Requirements include MetaTrader 5 (build 3390+) and an MQTT 5.0 broker such as Mosquitto, EMQX, or HiveMQ.
Documentation is available at github.com/chekh/MQTTFive, and the library is licensed under the MIT licence.
You may also like: object list - excellent alternative for library users on MetaTrader 5.
Source Code
#property copyright "RobotFX"
#property link "https://robotfx.org"
#property version "1.00"
#property script_show_inputs
#include <MQTTFive/MQTTClient.mqh>
input string InpHost = "127.0.0.1";
input int InpPort = 1883;
input string InpClientId = "mt5_price_pub";
input string InpTopic = "mt5/price";
input int InpIntervalMs = 1000;.......
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.