private async Task <byte[]> GetBytesFromMultipart(HttpListenerRequest request)
{
var multiparts = await MultipartFormData.ParseAsync(request);
var multipart = multiparts.FirstOrDefault(t =>
{
if (t.Headers.ContainsKey("Content-Disposition") == false)
{
return(false);
}
var contentDispositionText = t.Headers["Content-Disposition"];
var contentDispositionParts = contentDispositionText.Split(new[] { "; ", ";" }, StringSplitOptions.RemoveEmptyEntries);
var fileNameMatches = contentDispositionParts.Select(s =>
Regex.Match(s, @"^filename=[""']?(?<fileName>[^""']+)[""']?$"));
return(fileNameMatches.Any(s => s.Success));
});
if (multipart == null)
{
return(null);
}
return(multipart.Data);
}
public static async Task<MultipartFormData[]> ParseAsync(HttpListenerRequest request)
{
var contentTypeParts = request.ContentType.Split(new[] { "; ", ";" }, StringSplitOptions.None);
var boundaryMatch = contentTypeParts
.Select(t => Regex.Match(t, "^boundary=(?<boundary>.+)$", RegexOptions.IgnoreCase))
.First(t => t.Success);
var boundaryText = boundaryMatch.Groups["boundary"].Value;
var contentEncoding = request.ContentEncoding ?? Encoding.UTF8;
var boundayBytes = contentEncoding.GetBytes(boundaryText);
var contentBytes = await request.InputStream.ReadToEndAsync();
var partsBytes = Split(contentBytes, boundayBytes);
return partsBytes.Select(partBytes =>
{
var headerEndBytes = contentEncoding.GetBytes("\r\n\r\n");
var headerEndIndex = GetSplitIndexes(partBytes, headerEndBytes).FirstOrDefault();
if (headerEndIndex <= 0) return null;
var multipartFormData = new MultipartFormData { Headers = new Dictionary<string, string>() };
var headerContentBytes = new byte[headerEndIndex];
Array.Copy(partBytes, headerContentBytes, headerEndIndex);
using (var headerStream = new MemoryStream(headerContentBytes))
using (var headerReader = new StreamReader(headerStream, contentEncoding))
{
while (true)
{
var headerLine = headerReader.ReadLine();
if (string.IsNullOrEmpty(headerLine)) break;
var headerMatch = Regex.Match(headerLine, "^(?<key>[^:]+):(?<value>.+)$");
if (headerMatch.Success)
{
var headerKey = headerMatch.Groups["key"].Value;
var headerValue = headerMatch.Groups["value"].Value;
multipartFormData.Headers.Add(headerKey, headerValue);
}
}
}
var dataStartIndex = headerEndIndex + headerEndBytes.Length;
var dataLength = partBytes.Length - dataStartIndex;
multipartFormData.Data = new byte[dataLength];
Array.Copy(partBytes, dataStartIndex, multipartFormData.Data, 0, dataLength);
return multipartFormData;
})
.Where(t => t != null).ToArray();
}
public static async Task <MultipartFormData[]> ParseAsync(HttpListenerRequest request)
{
var contentTypeParts = request.ContentType.Split(new[] { "; ", ";" }, StringSplitOptions.None);
var boundaryMatch = contentTypeParts
.Select(t => Regex.Match(t, "^boundary=(?<boundary>.+)$", RegexOptions.IgnoreCase))
.First(t => t.Success);
var boundaryText = boundaryMatch.Groups["boundary"].Value;
var contentEncoding = request.ContentEncoding ?? Encoding.UTF8;
var boundayBytes = contentEncoding.GetBytes(boundaryText);
var contentBytes = await request.InputStream.ReadToEndAsync();
var partsBytes = Split(contentBytes, boundayBytes);
return(partsBytes.Select(partBytes =>
{
var headerEndBytes = contentEncoding.GetBytes("\r\n\r\n");
var headerEndIndex = GetSplitIndexes(partBytes, headerEndBytes).FirstOrDefault();
if (headerEndIndex <= 0)
{
return null;
}
var multipartFormData = new MultipartFormData {
Headers = new Dictionary <string, string>()
};
var headerContentBytes = new byte[headerEndIndex];
Array.Copy(partBytes, headerContentBytes, headerEndIndex);
using (var headerStream = new MemoryStream(headerContentBytes))
using (var headerReader = new StreamReader(headerStream, contentEncoding))
{
while (true)
{
var headerLine = headerReader.ReadLine();
if (string.IsNullOrEmpty(headerLine))
{
break;
}
var headerMatch = Regex.Match(headerLine, "^(?<key>[^:]+):(?<value>.+)$");
if (headerMatch.Success)
{
var headerKey = headerMatch.Groups["key"].Value;
var headerValue = headerMatch.Groups["value"].Value;
multipartFormData.Headers.Add(headerKey, headerValue);
}
}
}
var dataStartIndex = headerEndIndex + headerEndBytes.Length;
var dataLength = partBytes.Length - dataStartIndex;
multipartFormData.Data = new byte[dataLength];
Array.Copy(partBytes, dataStartIndex, multipartFormData.Data, 0, dataLength);
return multipartFormData;
})
.Where(t => t != null).ToArray());
}
