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Provides extension methods for types implementing IHttpContext.

HttpContextExtensions

public static class HttpContextExtensions

Gets the underlying IHttpContextImpl interface of an IHttpContext.

This API mainly supports the EmbedIO infrastructure; it is not intended to be used directly from your code, unless to fulfill very specific needs in the development of plug-ins (modules, etc.) for EmbedIO.

public static IHttpContextImpl GetImplementation(this IHttpContext this)

Gets the item associated with the specified key.

public static T GetItem<T>(this IHttpContext this, object key)

The item associated with the specified key, if the key is found in Items and the associated value is of type T; otherwise, the default value for T.

The desired type of the item.

Asynchronously retrieves the request body as an array of langword_csharp_bytes.

public static Task<byte[]> GetRequestBodyAsByteArrayAsync(this IHttpContext this)

A Task , representing the ongoing operation, whose result will be an array of Bytes containing the request body.

Asynchronously buffers the request body into a read-only .

public static Task<MemoryStream> GetRequestBodyAsMemoryStreamAsync(this IHttpContext this)

A Task , representing the ongoing operation, whose result will be a read-only containing the request body.

Asynchronously retrieves the request body as a string.

public static Task<string> GetRequestBodyAsStringAsync(this IHttpContext this)

A Task , representing the ongoing operation, whose result will be a langword_csharp_string representation of the request body.

Asynchronously deserializes a request body, using the default request deserializer.

As of EmbedIO version 3.0, the default response serializer has the same behavior of JSON request parsing methods of version 2.

public static Task<TData> GetRequestDataAsync<TData>(this IHttpContext this)

A Task , representing the ongoing operation, whose result will be the deserialized data.

The expected type of the deserialized data.

Asynchronously deserializes a request body, using the specified request deserializer.

public static Task<TData> GetRequestDataAsync<TData>(this IHttpContext this, RequestDeserializerCallback<TData> deserializer)

A Task , representing the ongoing operation, whose result will be the deserialized data.

The expected type of the deserialized data.

Asynchronously parses a request body in application/x-www-form-urlencoded format.

public static Task<NameValueCollection> GetRequestFormDataAsync(this IHttpContext this)

A Task , representing the ongoing operation, whose result will be a read-only of form field names and values.

Parses a request URL query. Note that this is different from getting the QueryString property, in that fields without an equal sign are treated as if they have an empty value, instead of their keys being grouped as values of the null key.

public static NameValueCollection GetRequestQueryData(this IHttpContext this)

A read-only .

Wraps the request input stream and returns a that can be used directly.

Decompression of compressed request bodies is implemented if specified in the web server's options.

public static Stream OpenRequestStream(this IHttpContext this)

A that can be used to write response data.

This stream MUST be disposed when finished writing.

Wraps the request input stream and returns a that can be used directly.

Decompression of compressed request bodies is implemented if specified in the web server's options.

If the request does not specify a content encoding, UTF-8 is used by default.

public static TextReader OpenRequestText(this IHttpContext this)

A that can be used to read the request body as text.

This reader MUST be disposed when finished reading.

Wraps the response output stream and returns a that can be used directly.

Optional buffering is applied, so that the response may be sent as one (thereby properly setting the Content-Length header) instead of using chunked transfer.

Proactive negotiation is performed to select the best compression method supported by the client.

public static Stream OpenResponseStream(this IHttpContext this, bool buffered = false, bool preferCompression = true)

The IHttpContext on which this method is called.

If set to true, the data to send will be collected in memory and sent all at once when the returned is disposed, setting the Content-Length response header; if set to false (the default), chunked transfer will be used.

true if sending compressed data is preferred over sending non-compressed data; otherwise, false.

A that can be used to write response data.

This stream MUST be disposed when finished writing.

Wraps the response output stream and returns a that can be used directly.

Optional buffering is applied, so that the response may be sent as one (thereby properly setting the Content-Length header) instead of using chunked transfer.

Proactive negotiation is performed to select the best compression method supported by the client.

public static TextWriter OpenResponseText(this IHttpContext this, Encoding? encoding = default(Encoding? ), bool buffered = false, bool preferCompression = true)

The IHttpContext on which this method is called.

The to use to convert text to data bytes. By default, UTF-8 is used.

If set to true, sent data is collected in a and sent all at once when the returned is disposed; if set to false (the default), chunked transfer will be used.

true if sending compressed data is preferred over sending non-compressed data; otherwise, false.

A that can be used to write response data.

This writer MUST be disposed when finished writing.

Sets a redirection status code and adds a Location header to the response.

public static void Redirect(this IHttpContext this, string location, int statusCode = default(int))

The IHttpContext interface on which this method is called.

The URL to which the user agent should be redirected.

The status code to set on the response.

Asynchronously sends serialized data as a response, using the specified response serializer.

As of EmbedIO version 3.0, the default response serializer has the same behavior of JSON response methods of version 2.

public static Task SendDataAsync(this IHttpContext this, ResponseSerializerCallback serializer, object data)

A representing the ongoing operation.

Asynchronously sends serialized data as a response, using the default response serializer.

As of EmbedIO version 3.0, the default response serializer has the same behavior of JSON response methods of version 2.

public static Task SendDataAsync(this IHttpContext this, object data)

A representing the ongoing operation.

Asynchronously sends a standard HTML response for the specified status code.

public static Task SendStandardHtmlAsync(this IHttpContext this, int statusCode)

The IHttpContext interface on which this method is called.

The HTTP status code of the response.

A representing the ongoing operation.

Asynchronously sends a standard HTML response for the specified status code.

public static Task SendStandardHtmlAsync(this IHttpContext this, int statusCode, Action<TextWriter>? writeAdditionalHtml)

The IHttpContext interface on which this method is called.

The HTTP status code of the response.

A callback function that may write additional HTML code to a representing the response output. If not null, the callback is called immediately before closing the HTML body tag.

A representing the ongoing operation.

Asynchronously sends a string as response.

public static Task SendStringAsync(this IHttpContext this, string content, string contentType, Encoding encoding)

The IHttpResponse interface on which this method is called.

The response content.

The MIME type of the content. If null, the content type will not be set.

The to use.

A representing the ongoing operation.

Gets the item associated with the specified key.

public static bool TryGetItem<T>(this IHttpContext this, object key, out T value)

The IHttpContext on which this method is called.

The key whose value to get from the Items dictionary.

When this method returns, the item associated with the specified key, if the key is found in Items and the associated value is of type T; otherwise, the default value for T.

This parameter is passed uninitialized.

true if the item is found and is of type T; otherwise, false.

The desired type of the item.

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