/// <summary>
/// Parses the JSON into an object of the specified type.
/// </summary>
/// <param name="response">The response.</param>
/// <param name="type">The type.</param>
/// <param name="jsonSettings">The JSON settings.</param>
/// <returns>An object of the specified type.</returns>
/// <exception cref="WebServiceException">The response content does not use the JSON content type, or the content is empty,
/// or the text is not valid JSON, or the JSON cannot be deserialized into the specified type.</exception>
/// <remarks>Use JToken as the type to parse arbitrary JSON.</remarks>
public static async Task <object?> GetJsonAsAsync(this HttpResponseMessage response, Type type, JsonSettings?jsonSettings)
{
try
{
// StreamReader will throw an ArgumentException when Stream.CanRead is false. It's suspected that this
// might happen if the HTTP request is canceled (via HttpClient.Timeout) before the response is read.
var responseStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
if (!responseStream.CanRead)
{
throw HttpResponseMessageUtility.CreateWebServiceException(response, "Response stream is not readable.");
}
// parse JSON to desired value
using var wrappingStream = new WrappingStream(responseStream, Ownership.None);
using var reader = new StreamReader(wrappingStream);
return(JsonUtility.FromJsonTextReader(reader, type, jsonSettings));
}
catch (JsonReaderException x)
{
// JSON invalid
throw HttpResponseMessageUtility.CreateWebServiceException(response, "Response is not valid JSON: " + x.Message, x);
}
catch (JsonSerializationException x)
{
// JSON can't be deserialized
throw HttpResponseMessageUtility.CreateWebServiceException(response, "Response JSON could not be deserialized to {0}: {1}".FormatInvariant(type, x.Message), x);
}
}
/// <summary>
/// Gets the JSON.
/// </summary>
/// <param name="response">The response.</param>
/// <returns>The unverified JSON.</returns>
/// <exception cref="WebServiceException">The response content does not use the JSON content type or the content is empty.</exception>
public static async Task <string> GetJsonAsync(this HttpResponseMessage response)
{
if (!response.HasJson())
{
throw await HttpResponseMessageUtility.CreateWebServiceExceptionWithContentPreviewAsync(response, "The response does not have JSON content.").ConfigureAwait(false);
}
return(await response.Content.ReadAsStringAsync().ConfigureAwait(false));
}
private static Task <WebServiceException> CreateExceptionAsync(WebServiceResponseHandlerInfo info, string message)
{
if (info.IsContentRead)
{
return(Task.FromResult(HttpResponseMessageUtility.CreateWebServiceException(info.WebResponse, message)));
}
else
{
info.MarkContentAsRead();
return(HttpResponseMessageUtility.CreateWebServiceExceptionWithContentPreviewAsync(info.WebResponse, message));
}
}
/// <summary>
/// Called when the response has been handled, i.e. immediately before it is returned.
/// </summary>
/// <param name="info">The web service response handler information.</param>
protected virtual async Task OnResponseHandledCoreAsync(WebServiceResponseHandlerInfo info)
{
m_requestMethod = info.WebResponse !.RequestMessage.Method.Method;
m_requestUri = info.WebResponse.RequestMessage.RequestUri;
m_responseStatusCode = info.WebResponse.StatusCode;
m_responseHeaders = info.WebResponse.Headers;
m_responseContentType = info.WebResponse.Content?.Headers?.ContentType?.ToString();
m_responseContentLength = info.WebResponse.Content?.Headers?.ContentLength;
if (!info.IsContentRead)
{
m_responseContentPreview = await HttpResponseMessageUtility.ReadContentPreviewAsync(info.WebResponse).ConfigureAwait(false);
info.MarkContentAsRead();
}
}
/// <summary>
/// Parses the JSON into an object of the specified type.
/// </summary>
/// <param name="response">The response.</param>
/// <param name="type">The type.</param>
/// <param name="jsonSettings">The JSON settings.</param>
/// <returns>An object of the specified type.</returns>
/// <exception cref="WebServiceException">The response content does not use the JSON content type, or the content is empty,
/// or the text is not valid JSON, or the JSON cannot be deserialized into the specified type.</exception>
/// <remarks>Use JToken as the type to parse arbitrary JSON.</remarks>
public static async Task <object> GetJsonAsAsync(this HttpResponseMessage response, Type type, JsonSettings jsonSettings)
{
try
{
// parse JSON to desired value
Stream responseStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
using (WrappingStream wrappingStream = new WrappingStream(responseStream, Ownership.None))
using (StreamReader reader = new StreamReader(wrappingStream))
return(JsonUtility.FromJsonTextReader(reader, type, jsonSettings));
}
catch (JsonReaderException x)
{
// JSON invalid
throw HttpResponseMessageUtility.CreateWebServiceException(response, "Response is not valid JSON: " + x.Message, x);
}
catch (JsonSerializationException x)
{
// JSON can't be deserialized
throw HttpResponseMessageUtility.CreateWebServiceException(response, "Response JSON could not be deserialized to {0}: {1}".FormatInvariant(type, x.Message), x);
}
}
