@Phong Vu

Based on your advise, I have checked in Stackoverflow. I was able to gather up some pieces of information and built the below function. It is working for png, jpeg, .mpeg but failing for .wmv and .mov.

Is the Mime Type I am using wrong for .wmv (video/x-ms-wmv) and .mov(video/x-ms-wmv) ?

I am sure that the file size that I used was small (<500KB).

{

"errorCode" : "InvalidContent",

"message" : "Unsupported attachment media type, attachment [1]: [video2.wmv]",

"errors" : [ {

"errorCode" : "MSG-348",

"message" : "Unsupported attachment media type, attachment [1]: [video2.wmv]",

"attachmentFileName" : "video2.wmv",

"attachmentNumber" : "1"

} ],

"attachmentFileName" : "video2.wmv",

"attachmentNumber" : "1"

}

Function SendSMSWithAttachment(ByVal ToPhone As String, ByVal SMSMessage As String, ByVal StrFilePath As String) As String

'strFilePath is the file to upload (C:My Documents est.zip)

Const MULTIPART_BOUNDARY = "---------------------------0123456789012"

Dim Ado

Dim BytFormData, BytFile

Dim StrFormStart, StrFormEnd, StrFormStartUTF8, StrFormEndUTF8

Dim Web

Dim StrFileField, StrFileExtension, MimeType As String

Dim JSONObject As Object

'Read the file into a byte array

Set Ado = CreateObject("ADODB.Stream")

Ado.Type = 1

Ado.Open

Ado.LoadFromFile StrFilePath

BytFile = Ado.Read

Ado.Close

'Get the File Extension

StrFileExtension = VBA.UCase(Mid(StrFilePath, InStrRev(StrFilePath, ".") + 1))

If ((StrFileExtension = "JPG") Or (StrFileExtension = "JPEG")) Then

MimeType = "image/jpeg"

ElseIf (StrFileExtension = "PNG") Then

MimeType = "image/png"

ElseIf (StrFileExtension = "GIF") Then

MimeType = "image/gif"

ElseIf (StrFileExtension = "BMP") Then

MimeType = "image/bmp"

ElseIf ((StrFileExtension = "TIF") Or (StrFileExtension = "TIFF")) Then

MimeType = "image/tiff"

ElseIf (StrFileExtension = "SVG") Then

MimeType = "image/svg+xml"

ElseIf (StrFileExtension = "3GP") Then

MimeType = "video/3gpp"

ElseIf (StrFileExtension = "MP4") Then

MimeType = "video/mp4"

ElseIf (StrFileExtension = "MPEG") Then

MimeType = "video/mpeg"

ElseIf (StrFileExtension = "FLV") Then

MimeType = "video/x-flv"

ElseIf (StrFileExtension = "WMV") Then

MimeType = "video/x-ms-wmv"

ElseIf (StrFileExtension = "MOV") Then

MimeType = "video/quicktime"

ElseIf (StrFileExtension = "MP3") Then

MimeType = "audio/mpeg3"

ElseIf ((StrFileExtension = "VCF") Or (StrFileExtension = "VCARD")) Then

MimeType = "text/vcard"

ElseIf (StrFileExtension = "ZIP") Then

MimeType = "application/zip"

ElseIf (StrFileExtension = "RTF") Then

MimeType = "application/rtf"

ElseIf (StrFileExtension = "HTML") Then

MimeType = "text/html"

Else

MimeType = "text/html"

End If

'Create the multipart form data.

'Define the end of form

StrFormEnd = vbCrLf & vbCrLf & "--" & MULTIPART_BOUNDARY & "--" & vbCrLf

'First add any ordinary form data pairs

StrFormStart = ""

StrFormStart = StrFormStart & "--" & MULTIPART_BOUNDARY & vbCrLf

StrFormStart = StrFormStart & "Content-Type: application/json; charset=UTF-8" & vbCrLf

StrFormStart = StrFormStart & "Content-Transfer-Encoding: 8bit" & vbCrLf & vbCrLf

StrFormStart = StrFormStart & "{" & Chr(34) & "to" & Chr(34) & ":[{" & Chr(34) & "phoneNumber" & Chr(34) & ": " & Chr(34) & ToPhone & Chr(34) & "}]," & vbCrLf

StrFormStart = StrFormStart & Chr(34) & "text" & Chr(34) & ":" & Chr(34) & SMSMessage & Chr(34) & "," & vbCrLf

StrFormStart = StrFormStart & Chr(34) & "from" & Chr(34) & ":{" & Chr(34) & "phoneNumber" & Chr(34) & ": " & Chr(34) & LoginUserName & Chr(34) & "}}"

StrFormStart = StrFormStart & vbCrLf & vbCrLf

'Now add the header for the uploaded file

StrFileField = Mid(StrFilePath, InStrRev(StrFilePath, "") + 1)

StrFormStart = StrFormStart & "--" & MULTIPART_BOUNDARY & vbCrLf

StrFormStart = StrFormStart & "Content-Type: " & MimeType & vbCrLf

StrFormStart = StrFormStart & "Content-Disposition: attachment; "

StrFormStart = StrFormStart & "filename=""" & StrFileField & """"

StrFormStart = StrFormStart & "Content-Transfer-Encoding: base64"

StrFormStart = StrFormStart & vbCrLf & vbCrLf

BytFormData = StrFormStart & EncodeBase64(BytFile) & StrFormEnd

'Upload it

Set Web = CreateObject("WinHttp.WinHttpRequest.5.1")

Web.Open "POST", SMSURI, False

Web.SetRequestHeader "Content-Type", "multipart/mixed; boundary=" & MULTIPART_BOUNDARY

Web.SetRequestHeader "Authorization", "Bearer " + AccessToken

Web.setTimeouts 300000, 300000, 300000, 3000000

Web.Send BytFormData

If (Web.Status) = 200 Then

Set JSONObject = WebHelpers.ParseJson(Web.responseText)

SendSMSWithAttachment = JSONObject("conversation")("id")

Else

Err.Raise 11041 + vbObjectError, "SendSMSWithAttachment", _

Web.Status & ": " & Web.responseText

End If

End Function

Private Function EncodeBase64(bytes) As String

Dim objXML As msxml2.DOMDocument60

Dim objNode As msxml2.IXMLDOMElement

Set objXML = New msxml2.DOMDocument60

Set objNode = objXML.createElement("b64")

objNode.DataType = "bin.base64"

objNode.nodeTypedValue = bytes

EncodeBase64 = objNode.Text

Set objNode = Nothing

Set objXML = Nothing

End Function

It looks like we don't support .wmv video for outbound MMS. Here are the list of supported mime types for outbound MMS:

images

.jpg / .jpeg => image/jpeg

.png => image/png

.gif => image/gif

.bmp => image/bmp

.svg => image/svg+xml

.tif / .tiff => image/tiff

files

.vcard => vcf/vcard

.gz => application/gzip

.zip => application/gzip

.rtf => application/rtf

audio

.mp3 => audio/mpeg

.m4a => audio/mp4

.arm => audio/amr

video

.mp4 => video/mp4

.mpeg => video/mpeg

.mpg => video/mpeg