<?xml version="1.0" encoding="UTF-8" ?> <class name="HTTPRequest" inherits="Node" version="4.0"> <brief_description> A node with the ability to send HTTP(S) requests. </brief_description> <description> A node with the ability to send HTTP requests. Uses [HTTPClient] internally. Can be used to make HTTP requests, i.e. download or upload files or web content via HTTP. [b]Example of contacting a REST API and printing one of its returned fields:[/b] [codeblocks] [gdscript] func _ready(): # Create an HTTP request node and connect its completion signal. var http_request = HTTPRequest.new() add_child(http_request) http_request.connect("request_completed", self, "_http_request_completed") # Perform a GET request. The URL below returns JSON as of writing. var error = http_request.request("https://httpbin.org/get") if error != OK: push_error("An error occurred in the HTTP request.") # Perform a POST request. The URL below returns JSON as of writing. # Note: Don't make simultaneous requests using a single HTTPRequest node. # The snippet below is provided for reference only. var body = {"name": "Godette"} error = http_request.request("https://httpbin.org/post", [], true, HTTPClient.METHOD_POST, body) if error != OK: push_error("An error occurred in the HTTP request.") # Called when the HTTP request is completed. func _http_request_completed(result, response_code, headers, body): var response = parse_json(body.get_string_from_utf8()) # Will print the user agent string used by the HTTPRequest node (as recognized by httpbin.org). print(response.headers["User-Agent"]) [/gdscript] [csharp] public override void _Ready() { // Create an HTTP request node and connect its completion signal. var httpRequest = new HTTPRequest(); AddChild(httpRequest); httpRequest.Connect("request_completed", this, nameof(HttpRequestCompleted)); // Perform a GET request. The URL below returns JSON as of writing. Error error = httpRequest.Request("https://httpbin.org/get"); if (error != Error.Ok) { GD.PushError("An error occurred in the HTTP request."); } // Perform a POST request. The URL below returns JSON as of writing. // Note: Don't make simultaneous requests using a single HTTPRequest node. // The snippet below is provided for reference only. string[] body = { "name", "Godette" }; // GDScript to_json is non existent, so we use JSON.Print() here. error = httpRequest.Request("https://httpbin.org/post", null, true, HTTPClient.Method.Post, JSON.Print(body)); if (error != Error.Ok) { GD.PushError("An error occurred in the HTTP request."); } } // Called when the HTTP request is completed. private void HttpRequestCompleted(int result, int response_code, string[] headers, byte[] body) { // GDScript parse_json is non existent so we have to use JSON.parse, which has a slightly different syntax. var response = JSON.Parse(body.GetStringFromUTF8()).Result as Godot.Collections.Dictionary; // Will print the user agent string used by the HTTPRequest node (as recognized by httpbin.org). GD.Print((response["headers"] as Godot.Collections.Dictionary)["User-Agent"]); } [/csharp] [/codeblocks] [b]Example of loading and displaying an image using HTTPRequest:[/b] [codeblocks] [gdscript] func _ready(): # Create an HTTP request node and connect its completion signal. var http_request = HTTPRequest.new() add_child(http_request) http_request.connect("request_completed", self, "_http_request_completed") # Perform the HTTP request. The URL below returns a PNG image as of writing. var error = http_request.request("https://via.placeholder.com/512") if error != OK: push_error("An error occurred in the HTTP request.") # Called when the HTTP request is completed. func _http_request_completed(result, response_code, headers, body): if result != HTTPRequest.RESULT_SUCCESS: push_error("Image couldn't be downloaded. Try a different image.") var image = Image.new() var error = image.load_png_from_buffer(body) if error != OK: push_error("Couldn't load the image.") var texture = ImageTexture.new() texture.create_from_image(image) # Display the image in a TextureRect node. var texture_rect = TextureRect.new() add_child(texture_rect) texture_rect.texture = texture [/gdscript] [csharp] public override void _Ready() { // Create an HTTP request node and connect its completion signal. var httpRequest = new HTTPRequest(); AddChild(httpRequest); httpRequest.Connect("request_completed", this, nameof(HttpRequestCompleted)); // Perform the HTTP request. The URL below returns a PNG image as of writing. Error error = httpRequest.Request("https://via.placeholder.com/512"); if (error != Error.Ok) { GD.PushError("An error occurred in the HTTP request."); } } // Called when the HTTP request is completed. private void HttpRequestCompleted(int result, int response_code, string[] headers, byte[] body) { if (result != (int)HTTPRequest.Result.Success) { GD.PushError("Image couldn't be downloaded. Try a different image."); } var image = new Image(); Error error = image.LoadPngFromBuffer(body); if (error != Error.Ok) { GD.PushError("Couldn't load the image."); } var texture = new ImageTexture(); texture.CreateFromImage(image); // Display the image in a TextureRect node. var textureRect = new TextureRect(); AddChild(textureRect); textureRect.Texture = texture; } [/csharp] [/codeblocks] [b]Gzipped response bodies[/b]: HTTPRequest will automatically handle decompression of response bodies. A [code]Accept-Encoding[/code] header will be automatically added to each of your requests, unless one is already specified. Any response with a [code]Content-Encoding: gzip[/code] header will automatically be decompressed and delivered to you as uncompressed bytes. [b]Note:[/b] When performing HTTP requests from a project exported to HTML5, keep in mind the remote server may not allow requests from foreign origins due to [url=https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS]CORS[/url]. If you host the server in question, you should modify its backend to allow requests from foreign origins by adding the [code]Access-Control-Allow-Origin: *[/code] HTTP header. [b]Note:[/b] SSL/TLS support is currently limited to TLS 1.0, TLS 1.1, and TLS 1.2. Attempting to connect to a TLS 1.3-only server will return an error. </description> <tutorials> <link title="Making HTTP requests">https://docs.godotengine.org/en/latest/tutorials/networking/http_request_class.html</link> <link title="SSL certificates">https://docs.godotengine.org/en/latest/tutorials/networking/ssl_certificates.html</link> </tutorials> <methods> <method name="cancel_request"> <return type="void"> </return> <description> Cancels the current request. </description> </method> <method name="get_body_size" qualifiers="const"> <return type="int"> </return> <description> Returns the response body length. [b]Note:[/b] Some Web servers may not send a body length. In this case, the value returned will be [code]-1[/code]. If using chunked transfer encoding, the body length will also be [code]-1[/code]. </description> </method> <method name="get_downloaded_bytes" qualifiers="const"> <return type="int"> </return> <description> Returns the amount of bytes this HTTPRequest downloaded. </description> </method> <method name="get_http_client_status" qualifiers="const"> <return type="int" enum="HTTPClient.Status"> </return> <description> Returns the current status of the underlying [HTTPClient]. See [enum HTTPClient.Status]. </description> </method> <method name="request"> <return type="int" enum="Error"> </return> <argument index="0" name="url" type="String"> </argument> <argument index="1" name="custom_headers" type="PackedStringArray" default="PackedStringArray( )"> </argument> <argument index="2" name="ssl_validate_domain" type="bool" default="true"> </argument> <argument index="3" name="method" type="int" enum="HTTPClient.Method" default="0"> </argument> <argument index="4" name="request_data" type="String" default=""""> </argument> <description> Creates request on the underlying [HTTPClient]. If there is no configuration errors, it tries to connect using [method HTTPClient.connect_to_host] and passes parameters onto [method HTTPClient.request]. Returns [constant OK] if request is successfully created. (Does not imply that the server has responded), [constant ERR_UNCONFIGURED] if not in the tree, [constant ERR_BUSY] if still processing previous request, [constant ERR_INVALID_PARAMETER] if given string is not a valid URL format, or [constant ERR_CANT_CONNECT] if not using thread and the [HTTPClient] cannot connect to host. [b]Note:[/b] The [code]request_data[/code] parameter is ignored if [code]method[/code] is [constant HTTPClient.METHOD_GET]. This is because GET methods can't contain request data. As a workaround, you can pass request data as a query string in the URL. See [method String.uri_encode] for an example. </description> </method> <method name="request_raw"> <return type="int" enum="Error"> </return> <argument index="0" name="url" type="String"> </argument> <argument index="1" name="custom_headers" type="PackedStringArray" default="PackedStringArray( )"> </argument> <argument index="2" name="ssl_validate_domain" type="bool" default="true"> </argument> <argument index="3" name="method" type="int" enum="HTTPClient.Method" default="0"> </argument> <argument index="4" name="request_data_raw" type="PackedByteArray" default="PackedByteArray( )"> </argument> <description> Creates request on the underlying [HTTPClient] using a raw array of bytes for the request body. If there is no configuration errors, it tries to connect using [method HTTPClient.connect_to_host] and passes parameters onto [method HTTPClient.request]. Returns [constant OK] if request is successfully created. (Does not imply that the server has responded), [constant ERR_UNCONFIGURED] if not in the tree, [constant ERR_BUSY] if still processing previous request, [constant ERR_INVALID_PARAMETER] if given string is not a valid URL format, or [constant ERR_CANT_CONNECT] if not using thread and the [HTTPClient] cannot connect to host. </description> </method> </methods> <members> <member name="accept_gzip" type="bool" setter="set_accept_gzip" getter="is_accepting_gzip" default="true"> If [code]true[/code], this header will be added to each request: [code]Accept-Encoding: gzip, deflate[/code] telling servers that it's okay to compress response bodies. Any Response body declaring a [code]Content-Encoding[/code] of either [code]gzip[/code] or [code]deflate[/code] will then be automatically decompressed, and the uncompressed bytes will be delivered via [code]request_completed[/code]. If the user has specified their own [code]Accept-Encoding[/code] header, then no header will be added regardless of [code]accept_gzip[/code]. If [code]false[/code] no header will be added, and no decompression will be performed on response bodies. The raw bytes of the response body will be returned via [code]request_completed[/code]. </member> <member name="body_size_limit" type="int" setter="set_body_size_limit" getter="get_body_size_limit" default="-1"> Maximum allowed size for response bodies. If the response body is compressed, this will be used as the maximum allowed size for the decompressed body. </member> <member name="download_chunk_size" type="int" setter="set_download_chunk_size" getter="get_download_chunk_size" default="65536"> The size of the buffer used and maximum bytes to read per iteration. See [member HTTPClient.read_chunk_size]. Set this to a lower value (e.g. 4096 for 4 KiB) when downloading small files to decrease memory usage at the cost of download speeds. </member> <member name="download_file" type="String" setter="set_download_file" getter="get_download_file" default=""""> The file to download into. Will output any received file into it. </member> <member name="max_redirects" type="int" setter="set_max_redirects" getter="get_max_redirects" default="8"> Maximum number of allowed redirects. </member> <member name="timeout" type="int" setter="set_timeout" getter="get_timeout" default="0"> </member> <member name="use_threads" type="bool" setter="set_use_threads" getter="is_using_threads" default="false"> If [code]true[/code], multithreading is used to improve performance. </member> </members> <signals> <signal name="request_completed"> <argument index="0" name="result" type="int"> </argument> <argument index="1" name="response_code" type="int"> </argument> <argument index="2" name="headers" type="PackedStringArray"> </argument> <argument index="3" name="body" type="PackedByteArray"> </argument> <description> Emitted when a request is completed. </description> </signal> </signals> <constants> <constant name="RESULT_SUCCESS" value="0" enum="Result"> Request successful. </constant> <constant name="RESULT_CHUNKED_BODY_SIZE_MISMATCH" value="1" enum="Result"> </constant> <constant name="RESULT_CANT_CONNECT" value="2" enum="Result"> Request failed while connecting. </constant> <constant name="RESULT_CANT_RESOLVE" value="3" enum="Result"> Request failed while resolving. </constant> <constant name="RESULT_CONNECTION_ERROR" value="4" enum="Result"> Request failed due to connection (read/write) error. </constant> <constant name="RESULT_SSL_HANDSHAKE_ERROR" value="5" enum="Result"> Request failed on SSL handshake. </constant> <constant name="RESULT_NO_RESPONSE" value="6" enum="Result"> Request does not have a response (yet). </constant> <constant name="RESULT_BODY_SIZE_LIMIT_EXCEEDED" value="7" enum="Result"> Request exceeded its maximum size limit, see [member body_size_limit]. </constant> <constant name="RESULT_BODY_DECOMPRESS_FAILED" value="8" enum="Result"> </constant> <constant name="RESULT_REQUEST_FAILED" value="9" enum="Result"> Request failed (currently unused). </constant> <constant name="RESULT_DOWNLOAD_FILE_CANT_OPEN" value="10" enum="Result"> HTTPRequest couldn't open the download file. </constant> <constant name="RESULT_DOWNLOAD_FILE_WRITE_ERROR" value="11" enum="Result"> HTTPRequest couldn't write to the download file. </constant> <constant name="RESULT_REDIRECT_LIMIT_REACHED" value="12" enum="Result"> Request reached its maximum redirect limit, see [member max_redirects]. </constant> <constant name="RESULT_TIMEOUT" value="13" enum="Result"> </constant> </constants> </class>