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POHttpRequest Exception Header section VB.NET
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copied!<p>I'm trying to upload a file with the following code, but when I upload a file raises an exception: Header section has more than 10240 bytes (maybe it is not properly terminated)</p> <p>I try with this but isn't work: <a href="https://stackoverflow.com/questions/1874410/webrequest-post-with-both-file-and-parameters">WebRequest POST with both file and parameters</a></p> <pre><code>Dim boundary As String = "---------------------------" & DateTime.Now.Ticks.ToString("x") Dim newLine As String = System.Environment.NewLine Dim boundaryBytes As Byte() = Encoding.ASCII.GetBytes(newLine & "--" & boundary & newLine) Dim request As Net.HttpWebRequest = Net.WebRequest.Create(uri) request.ContentType = "multipart/form-data; boundary=" & boundary request.Method = "POST" request.KeepAlive = True Using requestStream As IO.Stream = request.GetRequestStream() Dim formDataTemplate As String = "Content-Disposition: form-data; name=""{0}""{1}{1}{2}" For Each key As String In otherParameters.Keys requestStream.Write(boundaryBytes, 0, boundaryBytes.Length) Dim formItem As String Dim formItemBytes As Byte() If key = "file" Then formItemBytes = StreamFile(otherParameters(key)) Else formItem = String.Format(formDataTemplate, key, newLine, otherParameters(key)) formItemBytes = Encoding.UTF8.GetBytes(formItem) End If requestStream.Write(formItemBytes, 0, formItemBytes.Length) Next key requestStream.Write(boundaryBytes, 0, boundaryBytes.Length) Dim headerTemplate As String = "Content-Disposition: form-data; name=""{0}""; filename=""{1}""{2}Content-Type: {3}{2}{2}" Dim header As String = String.Format(headerTemplate, fileParameterName, filePath, newLine, contentType) Dim headerBytes As Byte() = Encoding.UTF8.GetBytes(header) requestStream.Write(headerBytes, 0, headerBytes.Length) Using fileStream As New IO.FileStream(filePath, IO.FileMode.Open, IO.FileAccess.Read) Dim buffer(4096) As Byte Dim bytesRead As Int32 = fileStream.Read(buffer, 0, buffer.Length) Do While (bytesRead > 0) requestStream.Write(buffer, 0, bytesRead) bytesRead = fileStream.Read(buffer, 0, buffer.Length) Loop End Using Dim trailer As Byte() = Encoding.ASCII.GetBytes(newLine & "--" + boundary + "--" & newLine) requestStream.Write(trailer, 0, trailer.Length) End Using Dim response As Net.WebResponse = request.GetResponse() </code></pre> <p><strong>EDIT:</strong></p> <p>I try with two options and not work:</p> <pre><code>Dim headerTemplate As String = "Content-Disposition: form-data; name=""{0}""; filename=""{1}""{2} Content-Type: {3}{2}{2}" Dim headerTemplate As String = "Content-Disposition: form-data; name=""{0}""; filename=""{1}""{2}" & newLine & "Content-Type: {3}{2}{2}" </code></pre>

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