get_candles` occasionally hangs without response or error

[David129676]

Hi, I’m experiencing an issue where the get_candles method occasionally hangs. Most of the time it works correctly, but sometimes the script just freezes after printing:

Fetching most recent candle for time: <timestamp>

No error is thrown and no further output is logged. Below is my script and sample output. I’ve removed unrelated lines for clarity.

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💻 Script (Relevant Part)

# Fetch the most recent candle
end_from_time = time.time()  # Directly use the current time
print(f"Fetching most recent candle for time: {end_from_time}")

# Fetch the candles data (only the most recent one)
candles = await client.get_candles(asset, end_from_time, offset, period)
candles_data = candles

if len(candles_data) > 0:
    if not candles_data[0].get("open"):
        candles = process_candles(candles_data, period)
        candles_data = candles  # Update the candles data with processed data

    # In the place where you're getting the data
    recent_candle = candles_data[-1]
    if not has_printed:
        print(f"Most recent candle for {asset}: {recent_candle}")
        has_printed = True

    if first_fetch:
        # Calculate the next 5-minute interval to align with the next candle
        current_time = time.time()
        next_interval_start_time = (current_time // period) * period + period

        # Calculate time to wait until the next 5-minute interval
        time_to_next_candle = next_interval_start_time - current_time
        time_to_next_candle += 10  # Adding 10 extra seconds for the wait

        if time_to_next_candle > 0:
            print(f"Waiting for {time_to_next_candle:.2f} seconds until the new candle starts.")
            await asyncio.sleep(time_to_next_candle)

        first_fetch = False

    # After the initial wait, fetch the next candles without delay calculations
    candles = await client.get_candles(asset, time.time(), offset, period)
    candles_data = candles

    if len(candles_data) > 0:
        recent_candle = candles_data[-1]
        print(f"Most recent candle for {asset}: {recent_candle}")

        color = get_color(recent_candle)
        candles_color.append(color)
        print(f"Color of the most recent candle: {color}")

---

🧪 Sample Output

Fetching most recent candle for time: 1745601008.5277383
Most recent candle for USDINR_otc: {'time': 1745600700, 'open': 90.7622, 'close': 90.7474, 'high': 90.7622, 'low': 90.7387, 'ticks': 688}
Waiting for 290.19 seconds until the new candle starts.
Most recent candle for USDINR_otc: {'time': 1745600700, 'open': 90.7622, 'close': 90.7474, 'high': 90.7622, 'low': 90.7387, 'ticks': 387}
Color of the most recent candle: red
Fetching most recent candle for time: 1745601601.1610038
Most recent candle for USDINR_otc: {'time': 1745601300, 'open': 90.7629, 'close': 90.7722, 'high': 90.7752, 'low': 90.7568, 'ticks': 713}
Color of the most recent candle: green
Fetching most recent candle for time: 1745601904.2905717
Most recent candle for USDINR_otc: {'time': 1745601600, 'open': 90.7722, 'close': 90.7546, 'high': 90.7729, 'low': 90.7536, 'ticks': 705}
Color of the most recent candle: red
Fetching most recent candle for time: 1745602206.4088607
Most recent candle for USDINR_otc: {'time': 1745601900, 'open': 90.7544, 'close': 90.7673, 'high': 90.7689, 'low': 90.7509, 'ticks': 703}
Color of the most recent candle: green
Fetching most recent candle for time: 1745602508.3360462  <-- Script freezes here

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🔎 Summary

• The script consistently prints the Fetching most recent candle for time: log, then hangs.
• It doesn't print the actual candle data afterward.
• There’s no exception or traceback — it just stops.
• This seems to happen randomly after several successful fetches.

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Is this a known issue, or could this be due to an unstable API response, rate limiting, or something else?
Would you recommend using a timeout or some advise for get_candles and fix this problem?

Thanks for your support!