public async Task FromJsonStream(IGraphQLTextSerializer serializer)
{
var test = $"{{\"query\":\"hello\",\"variables\":{ExampleJson}}}";
var testData = new MemoryStream(Encoding.UTF8.GetBytes(test));
var actual = await serializer.ReadAsync <TestClass1>(testData).ConfigureAwait(false);
actual.Query.ShouldBe("hello");
Verify(actual.Variables);
// verify that the stream has not been disposed
testData.ReadByte().ShouldBe(-1);
testData.Dispose();
Should.Throw <ObjectDisposedException>(() => testData.ReadByte());
}
public virtual async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
if (context.WebSockets.IsWebSocketRequest)
{
await next(context);
return;
}
// Handle requests as per recommendation at http://graphql.org/learn/serving-over-http/
// Inspiration: https://github.com/graphql/express-graphql/blob/master/src/index.js
var httpRequest = context.Request;
var httpResponse = context.Response;
var cancellationToken = GetCancellationToken(context);
// GraphQL HTTP only supports GET and POST methods
bool isGet = HttpMethods.IsGet(httpRequest.Method);
bool isPost = HttpMethods.IsPost(httpRequest.Method);
if (!isGet && !isPost)
{
httpResponse.Headers["Allow"] = "GET, POST";
await HandleInvalidHttpMethodErrorAsync(context);
return;
}
// Parse POST body
GraphQLRequest bodyGQLRequest = null;
IList <GraphQLRequest> bodyGQLBatchRequest = null;
if (isPost)
{
if (!MediaTypeHeaderValue.TryParse(httpRequest.ContentType, out var mediaTypeHeader))
{
await HandleContentTypeCouldNotBeParsedErrorAsync(context);
return;
}
switch (mediaTypeHeader.MediaType)
{
case MediaType.JSON:
IList <GraphQLRequest> deserializationResult;
try
{
#if NET5_0_OR_GREATER
if (!TryGetEncoding(mediaTypeHeader.CharSet, out var sourceEncoding))
{
await HandleContentTypeCouldNotBeParsedErrorAsync(context);
return;
}
// Wrap content stream into a transcoding stream that buffers the data transcoded from the sourceEncoding to utf-8.
if (sourceEncoding != null && sourceEncoding != System.Text.Encoding.UTF8)
{
using var tempStream = System.Text.Encoding.CreateTranscodingStream(httpRequest.Body, innerStreamEncoding: sourceEncoding, outerStreamEncoding: System.Text.Encoding.UTF8, leaveOpen: true);
deserializationResult = await _serializer.ReadAsync <IList <GraphQLRequest> >(tempStream, cancellationToken);
}
else
{
deserializationResult = await _serializer.ReadAsync <IList <GraphQLRequest> >(httpRequest.Body, cancellationToken);
}
#else
deserializationResult = await _serializer.ReadAsync <IList <GraphQLRequest> >(httpRequest.Body, cancellationToken);
#endif
}
catch (Exception ex)
{
if (!await HandleDeserializationErrorAsync(context, ex))
{
throw;
}
return;
}
// https://github.com/graphql-dotnet/server/issues/751
if (deserializationResult is GraphQLRequest[] array && array.Length == 1)
{
bodyGQLRequest = deserializationResult[0];
}
else
{
bodyGQLBatchRequest = deserializationResult;
}
break;
