Send a File Message

In this code snippet you learn how to send a file message through Facebook Messenger using the Messages API.

For a step-by-step guide to this topic, you can read our tutorial Sending Facebook Messenger messages with the Messages API.

Example

Ensure the following variables are set to your required values using any convenient method:

Key Description
BASE_URL For production use the base URL is https://api.nexmo.com/. For sandbox testing the base URL is https://messages-sandbox.nexmo.com/.
MESSAGES_API_URL For production use the Messages API endpoint is https://api.nexmo.com/v0.1/messages. For sandbox testing the Messages API endpoint is https://messages-sandbox.nexmo.com/v0.1/messages.
FB_SENDER_ID Your Page ID. The FB_SENDER_ID is the same as the to.id value you received in the inbound messenger event on your Inbound Message Webhook URL. For sandbox testing this is 107083064136738.
FB_RECIPIENT_ID The PSID of the user you want to reply to. The FB_RECIPIENT_ID is the PSID of the Facebook User you are messaging. This value is the from.id value you received in the inbound messenger event on your Inbound Message Webhook URL.
FILE_URL The link to the file to send. Can be ZIP, CSV, PDF or any other type supported by Messenger.

Prerequisites

Create an application
If you do not have an application you can create one. Make sure you also configure your webhooks.

Write the code

Add the following to send-file.sh:

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curl -X POST $MESSAGES_API_URL \
     -H 'Authorization: Bearer '$JWT \
     -H 'Content-Type: application/json' \
     -d $'{
  "to": {
    "type": "messenger",
    "id": "'$FB_RECIPIENT_ID'"
  },
  "message": {
    "content": {
      "type": "file",
      "file": {
        "url": "'$FILE_URL'"
      }
    }
  },
  "from": {
    "type": "messenger",
    "id": "'$FB_SENDER_ID'"
  }
}'

View full source

Run your code

Save this file to your machine and run it:

bash send-file.sh

Prerequisites

Create an application
If you do not have an application you can create one. Make sure you also configure your webhooks.
Install dependencies

npm install nexmo@beta

Write the code

Add the following to send-file.js:

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const Vonage = require('@vonage/server-sdk');

const vonage = new Vonage(
    {
        apiKey: VONAGE_API_KEY,
        apiSecret: VONAGE_API_SECRET,
        applicationId: VONAGE_APPLICATION_ID,
        privateKey: VONAGE_APPLICATION_PRIVATE_KEY_PATH,
    },
    {
        apiHost: BASE_URL,
    }
);

vonage.channel.send(
    { type: 'messenger', id: FB_RECIPIENT_ID },
    { type: 'messenger', id: FB_SENDER_ID },
    {
        content: {
            type: 'file',
            file: {
                url: FILE_URL,
            },
        },
    },
    (err, data) => {
        if (err) {
            console.error(err);
        } else {
            console.log(data.message_uuid);
        }
    }
);

View full source

Run your code

Save this file to your machine and run it:

node send-file.js

Try it out

When you run the code a file message is sent to the Messenger recipient.