[kudu REST API upload zip] Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory

Hi team,

I’m trying to upload a zip file to my azure function app using python.

I have verified the REST api: (PUT /api/zip/{path}/) can work in the postman.

But when I start to write the python script, I got the 500 error message:

{
    "Message": "An error has occurred.",
    "ExceptionMessage": "Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory.",
    "ExceptionType": "System.IO.InvalidDataException",
    "StackTrace": "   at System.IO.Compression.ZipArchive.ReadCentralDirectory()\r\n   at System.IO.Compression.ZipArchive.get_Entries()\r\n   at Kudu.Core.Infrastructure.ZipArchiveExtensions.Extract(ZipArchive archive, String directoryName)\r\n   at Kudu.Services.Zip.ZipController.<CreateDirectoryPutResponse>d__3.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Threading.Tasks.TaskHelpersExtensions.<CastToObject>d__3`1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<ExecuteActionFilterAsyncCore>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__5.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Filters.ActionFilterAttribute.<ExecuteActionFilterAsyncCore>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()"
}

My python code is written like this:

files = {"file": open(ZIP_FILE_NAME, 'rb')}
response = requests.put(url=url, auth=(usr, pwd), files=files)
if response.status_code not in [200, 201]:
     return False
 else:
     return True

and some refrences about the requests lib is here.

My request header:

{
    'Content-Length': '1254', 
    'Accept-Encoding': 'gzip, deflate', 
    'Accept': '*/*', 
    'User-Agent': 'python-requests/2.13.0', 
    'Connection': 'keep-alive', 
    'Content-Type': 'multipart/form-data; boundary=9963ab3e05c0477eb70f72a0a8813238', 
    'Authorization': 'Basic <hidden_base64_string>'
}

To verified if my upload script is wrong. I also wrote a simple server code to receive the upload file and it can receive the zip file. And the received zip file can be unzipped successfully.

Any suggestions about what’s wrong here?

Thanks

[ahmelsayed]

try this instead

rq.put({
  uri: `${azureUrl}/api/zip/site/wwwroot`,
  auth: {
    user: user,
    pass: password
  },
  body: fs.createReadStream(`${deployDir}/app.zip`)
})

You can check this https://github.com/c9/vfs-http-adapter for the specs vfs and zip controllers are implementing (though they are not a complete implementation)

[davidebbo]

Ok, so it sounds like the root of the issue was that the request was incorrect on the client, trying to pass the file as form data instead of binary.