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Production Server Issue: First Message Getting Cut...
# support
c
I'm encountering an issue with my Flask server deployed on Replit, specifically in the production environment. I've attempted to troubleshoot this using the AskAI docs search feature and searching through Discord, but I haven't found a solution, so I'm reaching out for your assistance. Issue Description: - In the test/staging environment on Replit, my Flask server works as expected. The first message ("Hey Christian") renders correctly and is audible when calling the staging number. - However, when deployed to production, the same code behaves differently. While the "Hey Christian" message is being rendered (as evidenced in the recordings), it's not audible when calling the production number. Observations and Hypotheses: - The issue seems to be specific to the production environment. - I suspect the production server might be responding too quickly, possibly causing the message to be returned to VAPI before it can be played on the call. - The staging environment, which I assume might be slightly slower, doesn't exhibit this issue. Attempted Solutions: - I've looked through the documentation for a way to delay specifically the first message, but couldn't find an appropriate method. - I found an option to delay all messages, but that's not the desired solution as it would affect the entire conversation flow. Request: Could you please advise on how to prevent the first message from being cut off in the production environment? I'm looking for a solution that doesn't involve delaying all messages, if possible. Thanks!
v
You can continue this conversation by mentioning me in the message.
@christian It sounds like you've done quite a bit of troubleshooting already. If the issue is that the production server is responding too quickly and the message is being cut off, you might want to consider adding a slight delay before sending the first message. This can be done programmatically within your Flask server code. Here's a suggestion you can try: 1. Add a short pause before sending the first message using the 
say
function. You can achieve this by using Python's 
time.sleep()
function to introduce a delay.
Copy code
python
import time

# ... your Flask server setup ...

@app.route('/webhook/answer', methods=['GET', 'POST'])
def answer_call():
    # Introduce a slight delay before sending the first message
    time.sleep(1)  # Delay for 1 second

    # Now send the first message
    response = {
        "action": "talk",
        "text": "Hey Christian"
    }
    return jsonify(response)
2. If you're using the 
say
function from VAPI, you can modify your code to include the delay there.
Copy code
python
# Assuming you have a function to handle the call
def handle_call():
    # Introduce a slight delay before sending the first message
    time.sleep(1)  # Delay for 1 second

    # Now send the first message
    say("Hey Christian")
Please note that adding a delay might slightly affect the user experience by introducing a pause before the message is played. However, if the delay is short enough, it should not be too noticeable and can serve as a workaround for the issue you're experiencing. If you're ready to try this solution, you can implement the delay as suggested and test it in your production environment to see if it resolves the issue with the first message being cut off. If you need further assistance or if this doesn't solve the problem, please ask support for more info on this.
c
@Vapi so the weirdest thing is happening — I tried this fix and it does have a bit of a negative impact on the user experience. Now, the strange thing is when I call the production phone number from my iPhone, I still run into the same issue where it gets cut off. But if I call the number from my MacBook Pro, which it says it's making the call from my iPhone, I'm able to hear it. So this is an extremely strange bug, and it seems like it's isolated to literally the call from my cell phone (and the production server; staging still works fine). I'm not quite sure what to do about this.
Bump 🙂
s
@christian We are currently having an office hour, can you please join it? We will help you directly. https://discord.gg/WPQuUJkF?event=1290804148354416710
c
Hey, sorry I missed this 😦
s
@christian can you share the call id?
c
This is going to sound crazy, but it seems to be working now? Thanks for being responsive and I'll include the call ID and more details if I encounter this issue again
s
that's good to know, from next time tag me directly over there @christian; can look faster.
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