657 lines
21 KiB
C++
657 lines
21 KiB
C++
/*************************************************************************/
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/* http_request.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "http_request.h"
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#include "core/io/compression.h"
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#include "core/string/ustring.h"
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void HTTPRequest::_redirect_request(const String &p_new_url) {
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}
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Error HTTPRequest::_request() {
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return client->connect_to_host(url, port, use_ssl, validate_ssl);
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}
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Error HTTPRequest::_parse_url(const String &p_url) {
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url = p_url;
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use_ssl = false;
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request_string = "";
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port = 80;
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request_sent = false;
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got_response = false;
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body_len = -1;
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body.resize(0);
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downloaded.set(0);
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redirections = 0;
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String url_lower = url.to_lower();
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if (url_lower.begins_with("http://")) {
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url = url.substr(7, url.length() - 7);
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} else if (url_lower.begins_with("https://")) {
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url = url.substr(8, url.length() - 8);
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use_ssl = true;
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port = 443;
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} else {
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ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "Malformed URL: " + url + ".");
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}
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ERR_FAIL_COND_V_MSG(url.length() < 1, ERR_INVALID_PARAMETER, "URL too short: " + url + ".");
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int slash_pos = url.find("/");
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if (slash_pos != -1) {
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request_string = url.substr(slash_pos, url.length());
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url = url.substr(0, slash_pos);
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} else {
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request_string = "/";
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}
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int colon_pos = url.find(":");
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if (colon_pos != -1) {
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port = url.substr(colon_pos + 1, url.length()).to_int();
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url = url.substr(0, colon_pos);
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ERR_FAIL_COND_V(port < 1 || port > 65535, ERR_INVALID_PARAMETER);
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}
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return OK;
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}
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bool HTTPRequest::has_header(const PackedStringArray &p_headers, const String &p_header_name) {
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bool exists = false;
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String lower_case_header_name = p_header_name.to_lower();
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for (int i = 0; i < p_headers.size() && !exists; i++) {
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String sanitized = p_headers[i].strip_edges().to_lower();
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if (sanitized.begins_with(lower_case_header_name)) {
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exists = true;
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}
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}
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return exists;
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}
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String HTTPRequest::get_header_value(const PackedStringArray &p_headers, const String &p_header_name) {
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String value = "";
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String lowwer_case_header_name = p_header_name.to_lower();
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for (int i = 0; i < p_headers.size(); i++) {
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if (p_headers[i].find(":", 0) >= 0) {
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Vector<String> parts = p_headers[i].split(":", false, 1);
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if (parts[0].strip_edges().to_lower() == lowwer_case_header_name) {
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value = parts[1].strip_edges();
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break;
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}
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}
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}
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return value;
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}
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Error HTTPRequest::request(const String &p_url, const Vector<String> &p_custom_headers, bool p_ssl_validate_domain, HTTPClient::Method p_method, const String &p_request_data) {
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// Copy the string into a raw buffer
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Vector<uint8_t> raw_data;
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CharString charstr = p_request_data.utf8();
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size_t len = charstr.length();
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raw_data.resize(len);
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uint8_t *w = raw_data.ptrw();
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copymem(w, charstr.ptr(), len);
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return request_raw(p_url, p_custom_headers, p_ssl_validate_domain, p_method, raw_data);
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}
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Error HTTPRequest::request_raw(const String &p_url, const Vector<String> &p_custom_headers, bool p_ssl_validate_domain, HTTPClient::Method p_method, const Vector<uint8_t> &p_request_data_raw) {
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ERR_FAIL_COND_V(!is_inside_tree(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V_MSG(requesting, ERR_BUSY, "HTTPRequest is processing a request. Wait for completion or cancel it before attempting a new one.");
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if (timeout > 0) {
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timer->stop();
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timer->start(timeout);
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}
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method = p_method;
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Error err = _parse_url(p_url);
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if (err) {
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return err;
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}
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validate_ssl = p_ssl_validate_domain;
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headers = p_custom_headers;
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if (accept_gzip) {
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// If the user has specified a different Accept-Encoding, don't overwrite it
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if (!has_header(headers, "Accept-Encoding")) {
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headers.push_back("Accept-Encoding: gzip, deflate");
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}
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}
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request_data = p_request_data_raw;
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requesting = true;
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if (use_threads.is_set()) {
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thread_done.clear();
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thread_request_quit.clear();
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client->set_blocking_mode(true);
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thread.start(_thread_func, this);
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} else {
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client->set_blocking_mode(false);
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err = _request();
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if (err != OK) {
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call_deferred("_request_done", RESULT_CANT_CONNECT, 0, PackedStringArray(), PackedByteArray());
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return ERR_CANT_CONNECT;
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}
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set_process_internal(true);
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}
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return OK;
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}
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void HTTPRequest::_thread_func(void *p_userdata) {
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HTTPRequest *hr = (HTTPRequest *)p_userdata;
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Error err = hr->_request();
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if (err != OK) {
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hr->call_deferred("_request_done", RESULT_CANT_CONNECT, 0, PackedStringArray(), PackedByteArray());
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} else {
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while (!hr->thread_request_quit.is_set()) {
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bool exit = hr->_update_connection();
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if (exit) {
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break;
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}
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OS::get_singleton()->delay_usec(1);
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}
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}
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hr->thread_done.set();
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}
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void HTTPRequest::cancel_request() {
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timer->stop();
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if (!requesting) {
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return;
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}
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if (!use_threads.is_set()) {
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set_process_internal(false);
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} else {
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thread_request_quit.set();
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thread.wait_to_finish();
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}
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if (file) {
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memdelete(file);
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file = nullptr;
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}
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client->close();
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body.resize(0);
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got_response = false;
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response_code = -1;
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request_sent = false;
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requesting = false;
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}
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bool HTTPRequest::_handle_response(bool *ret_value) {
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if (!client->has_response()) {
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call_deferred("_request_done", RESULT_NO_RESPONSE, 0, PackedStringArray(), PackedByteArray());
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*ret_value = true;
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return true;
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}
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got_response = true;
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response_code = client->get_response_code();
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List<String> rheaders;
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client->get_response_headers(&rheaders);
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response_headers.resize(0);
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downloaded.set(0);
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for (List<String>::Element *E = rheaders.front(); E; E = E->next()) {
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response_headers.push_back(E->get());
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}
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if (response_code == 301 || response_code == 302) {
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// Handle redirect
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if (max_redirects >= 0 && redirections >= max_redirects) {
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call_deferred("_request_done", RESULT_REDIRECT_LIMIT_REACHED, response_code, response_headers, PackedByteArray());
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*ret_value = true;
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return true;
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}
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String new_request;
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for (List<String>::Element *E = rheaders.front(); E; E = E->next()) {
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if (E->get().findn("Location: ") != -1) {
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new_request = E->get().substr(9, E->get().length()).strip_edges();
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}
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}
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if (new_request != "") {
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// Process redirect
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client->close();
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int new_redirs = redirections + 1; // Because _request() will clear it
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Error err;
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if (new_request.begins_with("http")) {
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// New url, request all again
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_parse_url(new_request);
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} else {
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request_string = new_request;
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}
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err = _request();
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if (err == OK) {
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request_sent = false;
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got_response = false;
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body_len = -1;
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body.resize(0);
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downloaded.set(0);
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redirections = new_redirs;
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*ret_value = false;
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return true;
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}
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}
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}
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return false;
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}
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bool HTTPRequest::_update_connection() {
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switch (client->get_status()) {
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case HTTPClient::STATUS_DISCONNECTED: {
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call_deferred("_request_done", RESULT_CANT_CONNECT, 0, PackedStringArray(), PackedByteArray());
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return true; // End it, since it's doing something
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} break;
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case HTTPClient::STATUS_RESOLVING: {
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client->poll();
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// Must wait
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return false;
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} break;
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case HTTPClient::STATUS_CANT_RESOLVE: {
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call_deferred("_request_done", RESULT_CANT_RESOLVE, 0, PackedStringArray(), PackedByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_CONNECTING: {
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client->poll();
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// Must wait
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return false;
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} break; // Connecting to IP
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case HTTPClient::STATUS_CANT_CONNECT: {
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call_deferred("_request_done", RESULT_CANT_CONNECT, 0, PackedStringArray(), PackedByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_CONNECTED: {
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if (request_sent) {
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if (!got_response) {
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// No body
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bool ret_value;
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if (_handle_response(&ret_value)) {
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return ret_value;
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}
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call_deferred("_request_done", RESULT_SUCCESS, response_code, response_headers, PackedByteArray());
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return true;
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}
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if (body_len < 0) {
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// Chunked transfer is done
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call_deferred("_request_done", RESULT_SUCCESS, response_code, response_headers, body);
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return true;
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}
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call_deferred("_request_done", RESULT_CHUNKED_BODY_SIZE_MISMATCH, response_code, response_headers, PackedByteArray());
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return true;
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// Request might have been done
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} else {
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// Did not request yet, do request
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Error err = client->request_raw(method, request_string, headers, request_data);
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if (err != OK) {
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call_deferred("_request_done", RESULT_CONNECTION_ERROR, 0, PackedStringArray(), PackedByteArray());
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return true;
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}
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request_sent = true;
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return false;
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}
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} break; // Connected: break requests only accepted here
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case HTTPClient::STATUS_REQUESTING: {
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// Must wait, still requesting
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client->poll();
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return false;
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} break; // Request in progress
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case HTTPClient::STATUS_BODY: {
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if (!got_response) {
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bool ret_value;
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if (_handle_response(&ret_value)) {
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return ret_value;
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}
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if (!client->is_response_chunked() && client->get_response_body_length() == 0) {
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call_deferred("_request_done", RESULT_SUCCESS, response_code, response_headers, PackedByteArray());
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return true;
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}
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// No body len (-1) if chunked or no content-length header was provided.
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// Change your webserver configuration if you want body len.
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body_len = client->get_response_body_length();
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if (body_size_limit >= 0 && body_len > body_size_limit) {
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call_deferred("_request_done", RESULT_BODY_SIZE_LIMIT_EXCEEDED, response_code, response_headers, PackedByteArray());
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return true;
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}
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if (download_to_file != String()) {
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file = FileAccess::open(download_to_file, FileAccess::WRITE);
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if (!file) {
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call_deferred("_request_done", RESULT_DOWNLOAD_FILE_CANT_OPEN, response_code, response_headers, PackedByteArray());
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return true;
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}
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}
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}
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client->poll();
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if (client->get_status() != HTTPClient::STATUS_BODY) {
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return false;
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}
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PackedByteArray chunk = client->read_response_body_chunk();
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downloaded.add(chunk.size());
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if (file) {
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const uint8_t *r = chunk.ptr();
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file->store_buffer(r, chunk.size());
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if (file->get_error() != OK) {
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call_deferred("_request_done", RESULT_DOWNLOAD_FILE_WRITE_ERROR, response_code, response_headers, PackedByteArray());
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return true;
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}
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} else {
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body.append_array(chunk);
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}
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if (body_size_limit >= 0 && downloaded.get() > body_size_limit) {
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call_deferred("_request_done", RESULT_BODY_SIZE_LIMIT_EXCEEDED, response_code, response_headers, PackedByteArray());
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return true;
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}
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if (body_len >= 0) {
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if (downloaded.get() == body_len) {
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call_deferred("_request_done", RESULT_SUCCESS, response_code, response_headers, body);
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return true;
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}
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} else if (client->get_status() == HTTPClient::STATUS_DISCONNECTED) {
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// We read till EOF, with no errors. Request is done.
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call_deferred("_request_done", RESULT_SUCCESS, response_code, response_headers, body);
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return true;
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}
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return false;
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} break; // Request resulted in body: break which must be read
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case HTTPClient::STATUS_CONNECTION_ERROR: {
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call_deferred("_request_done", RESULT_CONNECTION_ERROR, 0, PackedStringArray(), PackedByteArray());
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return true;
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} break;
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case HTTPClient::STATUS_SSL_HANDSHAKE_ERROR: {
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call_deferred("_request_done", RESULT_SSL_HANDSHAKE_ERROR, 0, PackedStringArray(), PackedByteArray());
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return true;
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} break;
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}
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ERR_FAIL_V(false);
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}
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void HTTPRequest::_request_done(int p_status, int p_code, const PackedStringArray &p_headers, const PackedByteArray &p_data) {
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cancel_request();
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// Determine if the request body is compressed
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bool is_compressed;
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String content_encoding = get_header_value(p_headers, "Content-Encoding").to_lower();
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Compression::Mode mode;
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if (content_encoding == "gzip") {
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mode = Compression::Mode::MODE_GZIP;
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is_compressed = true;
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} else if (content_encoding == "deflate") {
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mode = Compression::Mode::MODE_DEFLATE;
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is_compressed = true;
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} else {
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is_compressed = false;
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}
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const PackedByteArray *data = nullptr;
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if (accept_gzip && is_compressed && p_data.size() > 0) {
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// Decompress request body
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PackedByteArray *decompressed = memnew(PackedByteArray);
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int result = Compression::decompress_dynamic(decompressed, body_size_limit, p_data.ptr(), p_data.size(), mode);
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if (result == OK) {
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data = decompressed;
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} else if (result == -5) {
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WARN_PRINT("Decompressed size of HTTP response body exceeded body_size_limit");
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p_status = RESULT_BODY_SIZE_LIMIT_EXCEEDED;
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// Just return the raw data if we failed to decompress it
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data = &p_data;
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} else {
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WARN_PRINT("Failed to decompress HTTP response body");
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p_status = RESULT_BODY_DECOMPRESS_FAILED;
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// Just return the raw data if we failed to decompress it
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data = &p_data;
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}
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} else {
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data = &p_data;
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}
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emit_signal("request_completed", p_status, p_code, p_headers, *data);
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}
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void HTTPRequest::_notification(int p_what) {
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if (p_what == NOTIFICATION_INTERNAL_PROCESS) {
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if (use_threads.is_set()) {
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return;
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}
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bool done = _update_connection();
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if (done) {
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set_process_internal(false);
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// cancel_request(); called from _request done now
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}
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}
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if (p_what == NOTIFICATION_EXIT_TREE) {
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if (requesting) {
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cancel_request();
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}
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}
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}
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void HTTPRequest::set_use_threads(bool p_use) {
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ERR_FAIL_COND(get_http_client_status() != HTTPClient::STATUS_DISCONNECTED);
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use_threads.set_to(p_use);
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}
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bool HTTPRequest::is_using_threads() const {
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return use_threads.is_set();
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}
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void HTTPRequest::set_accept_gzip(bool p_gzip) {
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accept_gzip = p_gzip;
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}
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bool HTTPRequest::is_accepting_gzip() const {
|
|
return accept_gzip;
|
|
}
|
|
|
|
void HTTPRequest::set_body_size_limit(int p_bytes) {
|
|
ERR_FAIL_COND(get_http_client_status() != HTTPClient::STATUS_DISCONNECTED);
|
|
|
|
body_size_limit = p_bytes;
|
|
}
|
|
|
|
int HTTPRequest::get_body_size_limit() const {
|
|
return body_size_limit;
|
|
}
|
|
|
|
void HTTPRequest::set_download_file(const String &p_file) {
|
|
ERR_FAIL_COND(get_http_client_status() != HTTPClient::STATUS_DISCONNECTED);
|
|
|
|
download_to_file = p_file;
|
|
}
|
|
|
|
String HTTPRequest::get_download_file() const {
|
|
return download_to_file;
|
|
}
|
|
|
|
void HTTPRequest::set_download_chunk_size(int p_chunk_size) {
|
|
ERR_FAIL_COND(get_http_client_status() != HTTPClient::STATUS_DISCONNECTED);
|
|
|
|
client->set_read_chunk_size(p_chunk_size);
|
|
}
|
|
|
|
int HTTPRequest::get_download_chunk_size() const {
|
|
return client->get_read_chunk_size();
|
|
}
|
|
|
|
HTTPClient::Status HTTPRequest::get_http_client_status() const {
|
|
return client->get_status();
|
|
}
|
|
|
|
void HTTPRequest::set_max_redirects(int p_max) {
|
|
max_redirects = p_max;
|
|
}
|
|
|
|
int HTTPRequest::get_max_redirects() const {
|
|
return max_redirects;
|
|
}
|
|
|
|
int HTTPRequest::get_downloaded_bytes() const {
|
|
return downloaded.get();
|
|
}
|
|
|
|
int HTTPRequest::get_body_size() const {
|
|
return body_len;
|
|
}
|
|
|
|
void HTTPRequest::set_timeout(int p_timeout) {
|
|
ERR_FAIL_COND(p_timeout < 0);
|
|
timeout = p_timeout;
|
|
}
|
|
|
|
int HTTPRequest::get_timeout() {
|
|
return timeout;
|
|
}
|
|
|
|
void HTTPRequest::_timeout() {
|
|
cancel_request();
|
|
call_deferred("_request_done", RESULT_TIMEOUT, 0, PackedStringArray(), PackedByteArray());
|
|
}
|
|
|
|
void HTTPRequest::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("request", "url", "custom_headers", "ssl_validate_domain", "method", "request_data"), &HTTPRequest::request, DEFVAL(PackedStringArray()), DEFVAL(true), DEFVAL(HTTPClient::METHOD_GET), DEFVAL(String()));
|
|
ClassDB::bind_method(D_METHOD("request_raw", "url", "custom_headers", "ssl_validate_domain", "method", "request_data_raw"), &HTTPRequest::request_raw, DEFVAL(PackedStringArray()), DEFVAL(true), DEFVAL(HTTPClient::METHOD_GET), DEFVAL(PackedByteArray()));
|
|
ClassDB::bind_method(D_METHOD("cancel_request"), &HTTPRequest::cancel_request);
|
|
|
|
ClassDB::bind_method(D_METHOD("get_http_client_status"), &HTTPRequest::get_http_client_status);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_use_threads", "enable"), &HTTPRequest::set_use_threads);
|
|
ClassDB::bind_method(D_METHOD("is_using_threads"), &HTTPRequest::is_using_threads);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_accept_gzip", "enable"), &HTTPRequest::set_accept_gzip);
|
|
ClassDB::bind_method(D_METHOD("is_accepting_gzip"), &HTTPRequest::is_accepting_gzip);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_body_size_limit", "bytes"), &HTTPRequest::set_body_size_limit);
|
|
ClassDB::bind_method(D_METHOD("get_body_size_limit"), &HTTPRequest::get_body_size_limit);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_max_redirects", "amount"), &HTTPRequest::set_max_redirects);
|
|
ClassDB::bind_method(D_METHOD("get_max_redirects"), &HTTPRequest::get_max_redirects);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_download_file", "path"), &HTTPRequest::set_download_file);
|
|
ClassDB::bind_method(D_METHOD("get_download_file"), &HTTPRequest::get_download_file);
|
|
|
|
ClassDB::bind_method(D_METHOD("get_downloaded_bytes"), &HTTPRequest::get_downloaded_bytes);
|
|
ClassDB::bind_method(D_METHOD("get_body_size"), &HTTPRequest::get_body_size);
|
|
|
|
ClassDB::bind_method(D_METHOD("_redirect_request"), &HTTPRequest::_redirect_request);
|
|
ClassDB::bind_method(D_METHOD("_request_done"), &HTTPRequest::_request_done);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_timeout", "timeout"), &HTTPRequest::set_timeout);
|
|
ClassDB::bind_method(D_METHOD("get_timeout"), &HTTPRequest::get_timeout);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_download_chunk_size"), &HTTPRequest::set_download_chunk_size);
|
|
ClassDB::bind_method(D_METHOD("get_download_chunk_size"), &HTTPRequest::get_download_chunk_size);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::STRING, "download_file", PROPERTY_HINT_FILE), "set_download_file", "get_download_file");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "download_chunk_size", PROPERTY_HINT_RANGE, "256,16777216"), "set_download_chunk_size", "get_download_chunk_size");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_threads"), "set_use_threads", "is_using_threads");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "accept_gzip"), "set_accept_gzip", "is_accepting_gzip");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "body_size_limit", PROPERTY_HINT_RANGE, "-1,2000000000"), "set_body_size_limit", "get_body_size_limit");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "max_redirects", PROPERTY_HINT_RANGE, "-1,64"), "set_max_redirects", "get_max_redirects");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "timeout", PROPERTY_HINT_RANGE, "0,86400"), "set_timeout", "get_timeout");
|
|
|
|
ADD_SIGNAL(MethodInfo("request_completed", PropertyInfo(Variant::INT, "result"), PropertyInfo(Variant::INT, "response_code"), PropertyInfo(Variant::PACKED_STRING_ARRAY, "headers"), PropertyInfo(Variant::PACKED_BYTE_ARRAY, "body")));
|
|
|
|
BIND_ENUM_CONSTANT(RESULT_SUCCESS);
|
|
//BIND_ENUM_CONSTANT( RESULT_NO_BODY );
|
|
BIND_ENUM_CONSTANT(RESULT_CHUNKED_BODY_SIZE_MISMATCH);
|
|
BIND_ENUM_CONSTANT(RESULT_CANT_CONNECT);
|
|
BIND_ENUM_CONSTANT(RESULT_CANT_RESOLVE);
|
|
BIND_ENUM_CONSTANT(RESULT_CONNECTION_ERROR);
|
|
BIND_ENUM_CONSTANT(RESULT_SSL_HANDSHAKE_ERROR);
|
|
BIND_ENUM_CONSTANT(RESULT_NO_RESPONSE);
|
|
BIND_ENUM_CONSTANT(RESULT_BODY_SIZE_LIMIT_EXCEEDED);
|
|
BIND_ENUM_CONSTANT(RESULT_BODY_DECOMPRESS_FAILED);
|
|
BIND_ENUM_CONSTANT(RESULT_REQUEST_FAILED);
|
|
BIND_ENUM_CONSTANT(RESULT_DOWNLOAD_FILE_CANT_OPEN);
|
|
BIND_ENUM_CONSTANT(RESULT_DOWNLOAD_FILE_WRITE_ERROR);
|
|
BIND_ENUM_CONSTANT(RESULT_REDIRECT_LIMIT_REACHED);
|
|
BIND_ENUM_CONSTANT(RESULT_TIMEOUT);
|
|
}
|
|
|
|
HTTPRequest::HTTPRequest() {
|
|
client.instance();
|
|
timer = memnew(Timer);
|
|
timer->set_one_shot(true);
|
|
timer->connect("timeout", callable_mp(this, &HTTPRequest::_timeout));
|
|
add_child(timer);
|
|
}
|
|
|
|
HTTPRequest::~HTTPRequest() {
|
|
if (file) {
|
|
memdelete(file);
|
|
}
|
|
}
|