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Re: Missing or empty HTTP "Content-Type"

Missing or empty HTTP "Content-Type"

email_toan
Explorer | Level 3
Go to solution

I am having a terrible time trying to complete a large file upload using REST/HTTP Post.

I am able to start an upload session and append to an active session but when I call finsih I get the following error:

Error in call to API function "files/upload_session/finish": Missing or empty HTTP "Content-Type" header.  Expecting one of "application/octet-stream", "text/plain; charset=dropbox-cors-hack"

 

My C++ code:

 

 

bool FinishSession(char* TargetPath,char* SessionID, char* Offset)
{
CRect rest;
bool bAutoReconnect=true;
if(!rest.Connect("content.dropboxapi.com",443,true,bAutoReconnect))
  return 0;

//build dropbox args
char DropboxArgs[255];
 ZeroMemory(DropboxArgs,255);
 sprintf(DropboxArgs,"{\"cursor\": {\"session_id\":\"%s\",\"offset\":%s},\"commit\":{\"path\":\"%s\",\"mode\":{\".tag\":\"overwrite\"},\"autorename\":false,\"mute\":false}}",SessionID,Offset,TargetPath);

//add header vars
rest.AddHeader("Authorization",AxxToken);
rest.AddHeader("Content-Type","application/octet-stream");
rest.AddHeader("Dropbox-API-Arg",DropboxArgs);

//POST to Dropbox
const char *response = rest.Post("POST","/2/files/upload_session/finish");
if(response==NULL)
  return 0;

CJson json(response);
if(!json.Find("name"))
{

//response=Error in call to API function "files/upload_session/finish": Missing or empty HTTP "Content-Type" header.  Expecting one of "application/octet-stream", "text/plain; charset=dropbox-cors-hack"

  return 0; } return 1; }

 

1 Accepted Solution

Accepted Solutions

Steve M.
Dropbox Staff
Go to solution

What is CRect?

 

My best guess would be that the library you're using to make HTTP requests omits the Content-Type header when there's no POST body.

View solution in original post

2 Replies 2

Steve M.
Dropbox Staff
Go to solution

What is CRect?

 

My best guess would be that the library you're using to make HTTP requests omits the Content-Type header when there's no POST body.

email_toan
Explorer | Level 3
Go to solution

That's actually a typo.  Yes, CRest is a class library I used to make HTTP requests.  Removing the Content-Type header didn't work for me, however your responde lead me to discover if I post with a body, the API method succeeds.  So I've updated my logic to accomodate this.

 

Steve, thank you for your help.

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