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Error reading file async
I had a problem to download a file ( an Image ) and someone recommended to me to do asynchronously. I changed my code so : Async Function _take_file(ByVal _file As String) As Task .... Dim client As HttpClient = New HttpClient() Dim _Request As HttpRequestMessage = New HttpRequestMessage(HttpMethod.Post, "https://content.dropboxapi.com/2/files/download") _Request.Headers.Add("Authorization", "Bearer " + _token) _Request.Headers.Add("Dropbox-API-Arg", _parametro) Dim _response As HttpResponseMessage = Await client.SendAsync(_Request) Dim _responseStream As Stream = Await _response.Content.ReadAsStreamAsync() Dim myStreamReader As New StreamReader(_responseStream) I have an error on the last line : System.NullReferenceException was unhandled Message: An unhandled exception of type 'System.NullReferenceException' occurred in mscorlib.dllDownload file by Api ( Files/download ) , no error no file
I try to dowload a file by a Api . I have no error and a response with "OK" but i don't see the file. Have i donwloaded it ? where ? can i set up the local directory where save it ? This is my code : ( a big doubt is in content-Type ) Dim _command As String _command = "https://content.dropboxapi.com/2/files/download" Dim Request As HttpWebRequest Request = HttpWebRequest.Create(_command) Request.Method = "POST" Request.KeepAlive = True ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 Or SecurityProtocolType.Tls12 Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls Request.ContentType = "application/octet-stream" Request.UserAgent = "Mozilla/5.0 (Windows NT 6.3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/537.36" ServicePointManager.SecurityProtocol = CType(48, SecurityProtocolType) Or CType(192, SecurityProtocolType) Or CType(768, SecurityProtocolType) Or CType(3072, SecurityProtocolType) Request.AllowAutoRedirect = True Request.Headers.Add("Authorization", "Bearer " & _token) Request.Headers.Add("Dropbox-API-Arg", _parameter) Try Dim Response As HttpWebResponse = Request.GetResponse() Catch ex As WebException Using response = CType(ex.Response, HttpWebResponse) Using reader = New IO.StreamReader(response.GetResponseStream()) _error = reader.ReadToEnd() End Using End Using Catch ex As Exception Throw End Try
I can't download files by command
Download files with wget Hello gentlemen of the community. I have a problem. I've been using "wget" since June 2021 to download a file and since then everything has been fine. But this morning the command does not respond and gives clues as to what may be happening. Below is the command I use and it was working: wget -q --no-check-certificate https://www.dropbox.com/s/4mf0awazg0z0ols/TESTE.7z -O TESTE.7z It simply skips a line without any message. I thank you in advance for your support. Marcos