Gmail create draft api returns "MIssing draft message" error in C#

Question

I have tried all the possible ways and solutions for the above error in all sites. Help me in this. Below is the code i have used. I have taken care with the authentication part because it is working fine for listing of drafts. The string "iDraftString" is the rfc2822 formatted string which includes everything, that is both body and headers. The same Raw64 while i use in the gmail explorer, it is creating draft successfully. So i dont think there is a problem with formatting the strings.

CreateDraft(string iDraftString)
{   
    string userId = "me@gmail.com";
    string uriString = "https://www.googleapis.com/gmail/v1/users/" + userId + "/drafts";
    Uri oLabelUri = new Uri(uriString);
    HttpWebRequest oSendReq = HttpWebRequest.CreateHttp(oLabelUri);
    oSendReq.Method = "POST";
    oSendReq.Headers["Authorization"] = "Bearer " + accessToken;
    StreamWriter oReqStream = new StreamWriter(oSendReq.GetRequestStream());
    string Raw64 = Base64Encode(iDraftString);
    string json = new JavaScriptSerializer().Serialize( new
    {
        message = new
        {
            raw = Raw64,
            sizeEstimate = Raw64.Length
        }
    });
        oReqStream.Write(json);
        oReqStream.Close();
        var oLabelResponse = (HttpWebResponse)oSendReq.GetResponse();
}

Error response

{  
   "error":{  
      "errors":[  
         {  
            "domain":"global",
            "reason":"invalid Argument",
            "message":"Missing draft message"
         }
      ],
      "code":400,
      "message":"Missing draft message"
   }
}

can you post the full error message from Google? Also any reason you want to do this manually and not use the Google .Net Client library? — Linda Lawton - DaImTo, Feb 01 '17 at 07:17
Then I think you need to look up how to properly send a HTTP post contains a json payload that doesn't look right — Linda Lawton - DaImTo, Feb 01 '17 at 08:25
i have referred to the format and i guess this is the correct one. Still drafts are not getting created. — Navin, Feb 01 '17 at 08:39
Possible duplicate of [How to post JSON to the server?](http://stackoverflow.com/questions/9145667/how-to-post-json-to-the-server) — Linda Lawton - DaImTo, Feb 01 '17 at 08:48

score 0 · Answer 1 · answered Feb 02 '17 at 06:23

0

Finally i got the solution. The content-type of the Http request has to be set to "application/json"

oSendReq.ContentType = "application/json";

answered Feb 02 '17 at 06:23

Navin

1
1

Gmail create draft api returns "MIssing draft message" error in C#

1 Answers1