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🧾 ConfigExample (GoMT4)

Goal: show the minimal config.json used by this repo and how it’s consumed by the examples.

Real files:

  • Config file: examples/config/config.json
  • Config loader: examples/config/config.go (reads JSON into a struct)
  • Used by: examples/main.go

📍 Location

examples/config/config.json

This file is read at startup by the example app.

🧩 Schema (what fields mean)

{
  "Login": 501401178,
  "Password": "v8gctta",
  "Server": "RoboForex-Demo",
  "DefaultSymbol": "EURUSD"
}
  • Login (number) — MT4 account login.
  • Password (string) — investor or trade password. For demos, prefer investor (read‑only).
  • Server (string) — exact broker server name (e.g., RoboForex-Demo).
  • DefaultSymbol (string) — instrument to use by default (must match broker’s name; suffixes like EURUSD.m are different symbols).

🛠️ Edit & run

  1. Open examples/config/config.json and fill your values.
  2. Launch the example:
cd GoMT4
go mod tidy
go run ./examples/main.go

If config is valid and MT4 is connected, you’ll see logs from the example service.

🔍 Validation (quick checks)

  • Login is numeric, password non‑empty.
  • Server name exactly matches MT4 (check in terminal login dialog).
  • DefaultSymbol exists and is visible in Market Watch (Show All).

Minimal runtime probe (uses real calls):

sum, err := account.AccountSummary(ctx)
if err != nil { return err }
_, err = account.Quote(ctx, cfg.DefaultSymbol)
if err != nil { return err }

🔐 Security notes

  • config.json in this repo is meant for local development.
  • Do not commit real trading credentials to a public repo. Use demo creds or keep the repo private.
  • If you need secrets isolation, migrate to environment variables or an external secret store (optional; not required by this project).

⚠️ Common errors

  • symbol not found → wrong/hidden symbol; check suffix (EURUSD.m) and Show All in Market Watch.
  • invalid login/password/server → verify values against MT4 login dialog.
  • Timeouts on first run → start MT4 manually once so it initializes data; then retry.

🔗 See also

  • EnsureSymbolVisible.md — make sure DefaultSymbol is available.
  • AccountSummary.md — quick health snapshot after config is loaded.
  • GetQuote.md — confirm quotes for the default symbol.