Classic ASP
Twilio Send MMS (using Chilkat HTTP)

Send an outgoing MMS message. The only difference with MMS (as compared with SMS) is that a MediaUrl parameter is added to the POST. This means your image must be accessible on the web -- the Twilio server must be able to download the image from the URL you provide to include it in the MMS mesage to be sent.
Also, see Twilio MMS for more information about MMS.
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Classic ASP
<html>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<body>
<%
success = 0

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set http = Server.CreateObject("Chilkat.Http")

' Implements the following CURL command:

' (See information about using test credentials and phone numbers:  https://www.twilio.com/docs/iam/test-credentials)

' curl -X POST https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json \
' --data-urlencode "From=+15005550006" \
' --data-urlencode "Body=body" \
' --data-urlencode "To=+15005551212" \
' -u TWILIO_ACCOUNT_SID:TWILIO_AUTH_TOKEN

' Use the following online tool to generate HTTP code from a CURL command
' Convert a cURL Command to HTTP Source Code

http.Login = "TWILIO_ACCOUNT_SID"
http.Password = "TWILIO_AUTH_TOKEN"

set req = Server.CreateObject("Chilkat.HttpRequest")
req.HttpVerb = "POST"
req.Path = "/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "From","+15005550006"
req.AddParam "Body","body"
req.AddParam "To","+15005551212"
req.AddParam "MediaUrl","https://www.chilkatsoft.com/images/starfish.jpg"

set resp = Server.CreateObject("Chilkat.HttpResponse")
success = http.HttpReq("https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json",req,resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
success = resp.GetBodySb(sbResponseBody)
set jResp = Server.CreateObject("Chilkat.JsonObject")
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = 0

Response.Write "<pre>" & Server.HTMLEncode( "Response Body:") & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( jResp.Emit()) & "</pre>"

' A 201 status code indicates success.
respStatusCode = resp.StatusCode
Response.Write "<pre>" & Server.HTMLEncode( "Response Status Code = " & respStatusCode) & "</pre>"
If (respStatusCode >= 400) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Response Header:") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( resp.Header) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

' Sample JSON response:
' (Sample code for parsing the JSON response is shown below)

' {
'   "sid": "SM477111c301794f14b11eca5eefd5c350",
'   "date_created": "Tue, 18 Aug 2020 15:04:47 +0000",
'   "date_updated": "Tue, 18 Aug 2020 15:04:47 +0000",
'   "date_sent": null,
'   "account_sid": "AC2e9b6bc0f51133df24926f07341d3824",
'   "to": "+15005551212",
'   "from": "+15005550006",
'   "messaging_service_sid": null,
'   "body": "body",
'   "status": "queued",
'   "num_segments": "1",
'   "num_media": "0",
'   "direction": "outbound-api",
'   "api_version": "2010-04-01",
'   "price": null,
'   "price_unit": "USD",
'   "error_code": null,
'   "error_message": null,
'   "uri": "/2010-04-01/Accounts/AC2e9b6bc0f51133df24926f07341d3824/Messages/SM477111c301794f14b11eca5eefd5c350.json",
'   "subresource_uris": {
'     "media": "/2010-04-01/Accounts/AC2e9b6bc0f51133df24926f07341d3824/Messages/SM477111c301794f14b11eca5eefd5c350/Media.json"
'   }
' }

' Sample code for parsing the JSON response...
' Use the following online tool to generate parsing code from sample JSON:
' Generate Parsing Code from JSON

set date_created = Server.CreateObject("Chilkat.DtObj")
set date_updated = Server.CreateObject("Chilkat.DtObj")
set date_sent = Server.CreateObject("Chilkat.DtObj")

sid = jResp.StringOf("sid")
success = jResp.DtOf("date_created",0,date_created)
success = jResp.DtOf("date_updated",0,date_updated)
success = jResp.DtOf("date_sent",0,date_sent)
account_sid = jResp.StringOf("account_sid")
v_to = jResp.StringOf("to")
from = jResp.StringOf("from")
messaging_service_sid = jResp.StringOf("messaging_service_sid")
body = jResp.StringOf("body")
status = jResp.StringOf("status")
num_segments = jResp.StringOf("num_segments")
num_media = jResp.StringOf("num_media")
direction = jResp.StringOf("direction")
api_version = jResp.StringOf("api_version")
price = jResp.StringOf("price")
price_unit = jResp.StringOf("price_unit")
error_code = jResp.StringOf("error_code")
error_message = jResp.StringOf("error_message")
uri = jResp.StringOf("uri")
subresource_urisMedia = jResp.StringOf("subresource_uris.media")

%>
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