public Stream VisitJsonBody(JsonHttpBody body)
{
var text = body.Json.ToString(Formatting.Indented);
var result = new MemoryStream(Encoding.UTF8.GetBytes(text));
result.Position = 0;
return(result);
}
public static MultipartHttpBody ParseMultipart(HttpListenerRequest request)
{
var extraData = request.ContentType
.Split(';')
.Skip(1)
.Select(x => x.Trim().Split('='))
.ToDictionary(x => x[0], x => x[1].StartsWith("\"") ? x[1].Substring(1, x[1].Length - 2) : x[1]);
var boundary = "--" + extraData["boundary"];
var input = new MemoryStream();
var position = 0L;
request.InputStream.CopyTo(input);
var buffer = input.ToArray();
var result = new MultipartHttpBody();
// var s2 = new StreamReader(new MemoryStream(buffer)).ReadToEnd();
var boundaryBytes = Encoding.UTF8.GetBytes(boundary);
var boundaryLine = ReadLine(buffer, ref position);
if (boundaryLine != boundary)
throw new Exception($"Expected boundary but found: {boundaryLine}");
while (true)
{
string name = null;
string fileName = null;
string contentType = null;
for (var line = ReadLine(buffer, ref position); line != ""; line = ReadLine(buffer, ref position))
{
int colonIndex = line.IndexOf(':');
var headerName = line.Substring(0, colonIndex);
var headerValue = line.Substring(colonIndex + 2);
switch (headerName)
{
case "Content-Disposition":
{
var header = ContentDispositionHeaderValue.Parse(headerValue);
name = header.Name;
fileName = header.FileName;
break;
}
case "Content-Type":
{
var header = MediaTypeHeaderValue.Parse(headerValue);
contentType = header.MediaType;
break;
}
}
}
var endBoundary = IndexOf(buffer, position, boundaryBytes);
var dataBuffer = ReadBuffer(buffer, ref position, endBoundary - position);
Func<string> getText = () =>
{
var s = Encoding.UTF8.GetString(dataBuffer);
// s = s.Substring(0, s.Length - 2);
return s;
};
HttpBody body;
switch (contentType)
{
case "text/plain":
body = new StringHttpBody(getText());
break;
case "application/json":
body = new JsonHttpBody(JToken.Parse(getText()));
break;
case "application/octet-stream":
body = new ByteArrayHttpBody { Data = dataBuffer };
break;
default:
throw new Exception($"Unsupported media type: {contentType}");
}
result.Data[name] = new MultipartData { FileName = fileName, Body = body };
var endBoundaryLine = ReadLine(buffer, ref position);
if (endBoundaryLine == boundaryLine + "--")
break;
if (endBoundaryLine != boundaryLine)
throw new Exception($"Expected ending boundary but found: {boundaryLine}");
}
return result;
}
public Task <HttpHandlerResponse> Call(HttpApiRequest request)
{
var webRequest = WebRequest.CreateHttp(request.Url.ToString());
webRequest.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
webRequest.Method = request.Method.ToString();
if (request.Proxy != null)
{
webRequest.Proxy = request.Proxy;
}
foreach (var header in request.Headers)
{
switch (header.Name)
{
case "User-Agent":
webRequest.UserAgent = header.Values.Single();
break;
case "Accept":
webRequest.Accept = header.Values.Single();
break;
case "Content-Type":
webRequest.ContentType = header.Values.Single();
break;
default:
webRequest.Headers.Add(header.Name, string.Join(",", header.Values));
break;
}
}
var requestWriteTime = new Stopwatch();
requestWriteTime.Start();
if (request.Body != null)
{
var requestStream = webRequest.GetRequestStream();
var stream = request.Body.Accept(new ContentCreator());
stream.CopyTo(requestStream);
requestStream.Close();
}
else if (request.Method != HttpMethod.Get && request.Method != HttpMethod.Head)
{
var requestStream = webRequest.GetRequestStream();
requestStream.Close();
}
HttpWebResponse response;
try
{
response = (HttpWebResponse)webRequest.GetResponse();
}
catch (WebException e) when(e.Response != null)
{
response = (HttpWebResponse)e.Response;
}
requestWriteTime.Stop();
var responseHeaders = new List <HttpHeader>();
HttpBody responseBody = null;
responseHeaders.AddRange(response.Headers.AllKeys.Select(x => new HttpHeader(x, response.Headers[x].Split(','))));
var responseReadTime = new Stopwatch();
responseReadTime.Start();
var responseStream = response.GetResponseStream();
switch (request.ResponseContentTypeOverride ?? response.ContentType.Split(';')[0])
{
case "application/json":
var jsonString = Encoding.UTF8.GetString(responseStream.ReadToEnd());
var json = !string.IsNullOrEmpty(jsonString) ? JToken.Parse(jsonString) : null; // Hack to workaround silly servers that send a content type and a 204
if (json != null)
{
responseBody = new JsonHttpBody(json);
}
break;
case "application/x-www-form-urlencoded":
throw new NotSupportedException();
// var stream = await message.Content.ReadAsStreamAsync();
// body = FormParser.ParseForm(stream);
// break;
case "text/plain":
case "text/html":
case "":
var text = Encoding.UTF8.GetString(responseStream.ReadToEnd());
responseBody = new StringHttpBody(text);
break;
case "application/octet-stream":
var stream = new MemoryStream();
responseStream.CopyTo(stream);
stream.Position = 0;
responseBody = new StreamHttpBody(stream);
break;
}
responseStream.Close();
responseReadTime.Stop();
var result = new HttpApiResponse(response.StatusCode, responseBody, responseHeaders, response.ResponseUri.ToString());
return(Task.FromResult(new HttpHandlerResponse(result, requestWriteTime.Elapsed, responseReadTime.Elapsed)));
}
public static MultipartHttpBody ParseMultipart(HttpListenerRequest request)
{
var extraData = request.ContentType
.Split(';')
.Skip(1)
.Select(x => x.Trim().Split('='))
.ToDictionary(x => x[0], x => x[1].StartsWith("\"") ? x[1].Substring(1, x[1].Length - 2) : x[1]);
var boundary = "--" + extraData["boundary"];
var input = new MemoryStream();
var position = 0L;
request.InputStream.CopyTo(input);
var buffer = input.ToArray();
var result = new MultipartHttpBody();
// var s2 = new StreamReader(new MemoryStream(buffer)).ReadToEnd();
var boundaryBytes = Encoding.UTF8.GetBytes(boundary);
var boundaryLine = ReadLine(buffer, ref position);
if (boundaryLine != boundary)
{
throw new Exception($"Expected boundary but found: {boundaryLine}");
}
while (true)
{
string name = null;
string fileName = null;
string contentType = null;
for (var line = ReadLine(buffer, ref position); line != ""; line = ReadLine(buffer, ref position))
{
int colonIndex = line.IndexOf(':');
var headerName = line.Substring(0, colonIndex);
var headerValue = line.Substring(colonIndex + 2);
switch (headerName)
{
case "Content-Disposition":
{
var header = ContentDispositionHeaderValue.Parse(headerValue);
name = header.Name;
fileName = header.FileName;
break;
}
case "Content-Type":
{
var header = MediaTypeHeaderValue.Parse(headerValue);
contentType = header.MediaType;
break;
}
}
}
var endBoundary = IndexOf(buffer, position, boundaryBytes);
var dataBuffer = ReadBuffer(buffer, ref position, endBoundary - position);
Func <string> getText = () =>
{
var s = Encoding.UTF8.GetString(dataBuffer);
// s = s.Substring(0, s.Length - 2);
return(s);
};
HttpBody body;
switch (contentType)
{
case "text/plain":
body = new StringHttpBody(getText());
break;
case "application/json":
body = new JsonHttpBody(JToken.Parse(getText()));
break;
case "application/octet-stream":
body = new ByteArrayHttpBody {
Data = dataBuffer
};
break;
default:
throw new Exception($"Unsupported media type: {contentType}");
}
result.Data[name] = new MultipartData {
FileName = fileName, Body = body
};
var endBoundaryLine = ReadLine(buffer, ref position);
if (endBoundaryLine == boundaryLine + "--")
{
break;
}
if (endBoundaryLine != boundaryLine)
{
throw new Exception($"Expected ending boundary but found: {boundaryLine}");
}
}
return(result);
}
public Task <byte[]> VisitJsonBodyAsync(JsonHttpBody body)
{
return(Task.FromResult(Encoding.UTF8.GetBytes(body.Json.ToString(Formatting.None))));
}
public string VisitJsonBody(JsonHttpBody body)
{
return("application/json");
}
