721 lines
19 KiB
C++
721 lines
19 KiB
C++
/*************************************************************************/
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/* http_client.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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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_client.h"
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#include "io/stream_peer_ssl.h"
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VARIANT_ENUM_CAST(HTTPClient::Status);
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Error HTTPClient::connect(const String &p_host, int p_port, bool p_ssl,bool p_verify_host){
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close();
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conn_port=p_port;
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conn_host=p_host;
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if (conn_host.begins_with("http://")) {
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conn_host=conn_host.replace_first("http://","");
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} else if (conn_host.begins_with("https://")) {
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//use https
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conn_host=conn_host.replace_first("https://","");
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}
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ssl=p_ssl;
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ssl_verify_host=p_verify_host;
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connection=tcp_connection;
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if (conn_host.is_valid_ip_address()) {
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//is ip
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Error err = tcp_connection->connect(IP_Address(conn_host),p_port);
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if (err) {
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status=STATUS_CANT_CONNECT;
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return err;
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}
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status=STATUS_CONNECTING;
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} else {
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//is hostname
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resolving=IP::get_singleton()->resolve_hostname_queue_item(conn_host);
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status=STATUS_RESOLVING;
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}
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return OK;
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}
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void HTTPClient::set_connection(const Ref<StreamPeer>& p_connection){
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close();
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connection=p_connection;
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}
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Error HTTPClient::request( Method p_method, const String& p_url, const Vector<String>& p_headers,const String& p_body) {
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ERR_FAIL_INDEX_V(p_method,METHOD_MAX,ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V(status!=STATUS_CONNECTED,ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V(connection.is_null(),ERR_INVALID_DATA);
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static const char* _methods[METHOD_MAX]={
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"GET",
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"HEAD",
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"POST",
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"PUT",
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"DELETE",
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"OPTIONS",
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"TRACE",
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"CONNECT"};
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String request=String(_methods[p_method])+" "+p_url+" HTTP/1.1\r\n";
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request+="Host: "+conn_host+":"+itos(conn_port)+"\r\n";
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bool add_clen=p_body.length()>0;
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for(int i=0;i<p_headers.size();i++) {
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request+=p_headers[i]+"\r\n";
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if (add_clen && p_headers[i].find("Content-Length:")==0) {
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add_clen=false;
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}
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}
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if (add_clen) {
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request+="Content-Length: "+itos(p_body.utf8().length())+"\r\n";
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//should it add utf8 encoding? not sure
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}
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request+="\r\n";
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request+=p_body;
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CharString cs=request.utf8();
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Error err = connection->put_data((const uint8_t*)cs.ptr(),cs.length());
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if (err) {
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close();
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status=STATUS_CONNECTION_ERROR;
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return err;
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}
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status=STATUS_REQUESTING;
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return OK;
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}
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Error HTTPClient::send_body_text(const String& p_body){
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return OK;
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}
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Error HTTPClient::send_body_data(const ByteArray& p_body){
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return OK;
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}
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bool HTTPClient::has_response() const {
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return response_headers.size()!=0;
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}
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bool HTTPClient::is_response_chunked() const {
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return chunked;
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}
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int HTTPClient::get_response_code() const {
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return response_num;
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}
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Error HTTPClient::get_response_headers(List<String> *r_response) {
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if (!response_headers.size())
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return ERR_INVALID_PARAMETER;
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for(int i=0;i<response_headers.size();i++) {
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r_response->push_back(response_headers[i]);
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}
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response_headers.clear();
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return OK;
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}
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void HTTPClient::close(){
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if (tcp_connection->get_status()!=StreamPeerTCP::STATUS_NONE)
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tcp_connection->disconnect();
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connection.unref();
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status=STATUS_DISCONNECTED;
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if (resolving!=IP::RESOLVER_INVALID_ID) {
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IP::get_singleton()->erase_resolve_item(resolving);
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resolving=IP::RESOLVER_INVALID_ID;
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}
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response_headers.clear();
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response_str.clear();
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body_size=0;
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body_left=0;
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chunk_left=0;
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response_num=0;
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}
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Error HTTPClient::poll(){
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switch(status) {
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case STATUS_RESOLVING: {
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ERR_FAIL_COND_V(resolving==IP::RESOLVER_INVALID_ID,ERR_BUG);
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IP::ResolverStatus rstatus = IP::get_singleton()->get_resolve_item_status(resolving);
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switch(rstatus) {
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case IP::RESOLVER_STATUS_WAITING: return OK; //still resolving
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case IP::RESOLVER_STATUS_DONE: {
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IP_Address host = IP::get_singleton()->get_resolve_item_address(resolving);
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Error err = tcp_connection->connect(host,conn_port);
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IP::get_singleton()->erase_resolve_item(resolving);
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resolving=IP::RESOLVER_INVALID_ID;
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if (err) {
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status=STATUS_CANT_CONNECT;
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return err;
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}
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status=STATUS_CONNECTING;
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} break;
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case IP::RESOLVER_STATUS_NONE:
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case IP::RESOLVER_STATUS_ERROR: {
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IP::get_singleton()->erase_resolve_item(resolving);
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resolving=IP::RESOLVER_INVALID_ID;
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close();
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status=STATUS_CANT_RESOLVE;
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return ERR_CANT_RESOLVE;
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} break;
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}
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} break;
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case STATUS_CONNECTING: {
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StreamPeerTCP::Status s = tcp_connection->get_status();
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switch(s) {
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case StreamPeerTCP::STATUS_CONNECTING: {
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return OK; //do none
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} break;
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case StreamPeerTCP::STATUS_CONNECTED: {
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if (ssl) {
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Ref<StreamPeerSSL> ssl = StreamPeerSSL::create();
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Error err = ssl->connect(tcp_connection,true,ssl_verify_host?conn_host:String());
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if (err!=OK) {
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close();
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status=STATUS_SSL_HANDSHAKE_ERROR;
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return ERR_CANT_CONNECT;
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}
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//print_line("SSL! TURNED ON!");
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connection=ssl;
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}
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status=STATUS_CONNECTED;
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return OK;
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} break;
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case StreamPeerTCP::STATUS_ERROR:
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case StreamPeerTCP::STATUS_NONE: {
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close();
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status=STATUS_CANT_CONNECT;
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return ERR_CANT_CONNECT;
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} break;
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}
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} break;
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case STATUS_CONNECTED: {
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//request something please
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return OK;
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} break;
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case STATUS_REQUESTING: {
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while(true) {
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uint8_t byte;
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int rec=0;
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Error err = _get_http_data(&byte,1,rec);
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if (err!=OK) {
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close();
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status=STATUS_CONNECTION_ERROR;
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return ERR_CONNECTION_ERROR;
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}
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if (rec==0)
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return OK; //keep trying!
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response_str.push_back(byte);
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int rs = response_str.size();
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if (
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(rs>=2 && response_str[rs-2]=='\n' && response_str[rs-1]=='\n') ||
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(rs>=4 && response_str[rs-4]=='\r' && response_str[rs-3]=='\n' && rs>=4 && response_str[rs-2]=='\r' && response_str[rs-1]=='\n')
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) {
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//end of response, parse.
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response_str.push_back(0);
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String response;
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response.parse_utf8((const char*)response_str.ptr());
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//print_line("END OF RESPONSE? :\n"+response+"\n------");
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Vector<String> responses = response.split("\n");
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body_size=0;
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chunked=false;
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body_left=0;
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chunk_left=0;
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response_headers.clear();
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response_num = RESPONSE_OK;
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for(int i=0;i<responses.size();i++) {
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String header = responses[i].strip_edges();
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String s = header.to_lower();
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if (s.length()==0)
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continue;
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if (s.begins_with("content-length:")) {
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body_size = s.substr(s.find(":")+1,s.length()).strip_edges().to_int();
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body_left=body_size;
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}
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if (s.begins_with("transfer-encoding:")) {
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String encoding = header.substr(header.find(":")+1,header.length()).strip_edges();
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//print_line("TRANSFER ENCODING: "+encoding);
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if (encoding=="chunked") {
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chunked=true;
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}
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}
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if (i==0 && responses[i].begins_with("HTTP")) {
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String num = responses[i].get_slicec(' ',1);
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response_num=num.to_int();
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} else {
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response_headers.push_back(header);
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}
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}
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if (body_size==0 && !chunked) {
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status=STATUS_CONNECTED; //ask for something again?
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} else {
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status=STATUS_BODY;
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}
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return OK;
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}
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}
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//wait for response
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return OK;
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} break;
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case STATUS_DISCONNECTED: {
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return ERR_UNCONFIGURED;
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} break;
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case STATUS_CONNECTION_ERROR: {
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return ERR_CONNECTION_ERROR;
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} break;
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case STATUS_CANT_CONNECT: {
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return ERR_CANT_CONNECT;
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} break;
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case STATUS_CANT_RESOLVE: {
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return ERR_CANT_RESOLVE;
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} break;
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}
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return OK;
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}
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Dictionary HTTPClient::_get_response_headers_as_dictionary() {
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List<String> rh;
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get_response_headers(&rh);
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Dictionary ret;
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for(const List<String>::Element *E=rh.front();E;E=E->next()) {
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String s = E->get();
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int sp = s.find(":");
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if (sp==-1)
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continue;
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String key = s.substr(0,sp).strip_edges();
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String value = s.substr(sp+1,s.length()).strip_edges();
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ret[key]=value;
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}
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return ret;
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}
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StringArray HTTPClient::_get_response_headers() {
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List<String> rh;
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get_response_headers(&rh);
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StringArray ret;
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ret.resize(rh.size());
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int idx=0;
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for(const List<String>::Element *E=rh.front();E;E=E->next()) {
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ret.set(idx++,E->get());
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}
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return ret;
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}
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int HTTPClient::get_response_body_length() const {
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return body_size;
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}
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ByteArray HTTPClient::read_response_body_chunk() {
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ERR_FAIL_COND_V( status !=STATUS_BODY, ByteArray() );
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Error err=OK;
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if (chunked) {
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while(true) {
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if (chunk_left==0) {
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//reading len
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uint8_t b;
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int rec=0;
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err = _get_http_data(&b,1,rec);
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if (rec==0)
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break;
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chunk.push_back(b);
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if (chunk.size()>32) {
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ERR_PRINT("HTTP Invalid chunk hex len");
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status=STATUS_CONNECTION_ERROR;
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return ByteArray();
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}
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if (chunk.size()>2 && chunk[chunk.size()-2]=='\r' && chunk[chunk.size()-1]=='\n') {
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int len=0;
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for(int i=0;i<chunk.size()-2;i++) {
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char c = chunk[i];
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int v=0;
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if (c>='0' && c<='9')
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v=c-'0';
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else if (c>='a' && c<='f')
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v=c-'a'+10;
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else if (c>='A' && c<='F')
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v=c-'A'+10;
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else {
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ERR_PRINT("HTTP Chunk len not in hex!!");
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status=STATUS_CONNECTION_ERROR;
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return ByteArray();
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}
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len<<=4;
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len|=v;
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if (len>(1<<24)) {
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ERR_PRINT("HTTP Chunk too big!! >16mb");
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status=STATUS_CONNECTION_ERROR;
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return ByteArray();
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}
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}
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if (len==0) {
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//end!
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status=STATUS_CONNECTED;
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chunk.clear();
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return ByteArray();
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}
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chunk_left=len+2;
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chunk.resize(chunk_left);
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}
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} else {
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int rec=0;
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err = _get_http_data(&chunk[chunk.size()-chunk_left],chunk_left,rec);
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if (rec==0) {
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break;
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}
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chunk_left-=rec;
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if (chunk_left==0) {
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if (chunk[chunk.size()-2]!='\r' || chunk[chunk.size()-1]!='\n') {
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ERR_PRINT("HTTP Invalid chunk terminator (not \\r\\n)");
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status=STATUS_CONNECTION_ERROR;
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return ByteArray();
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}
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ByteArray ret;
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ret.resize(chunk.size()-2);
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{
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ByteArray::Write w = ret.write();
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copymem(w.ptr(),chunk.ptr(),chunk.size()-2);
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}
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chunk.clear();
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return ret;
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}
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break;
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}
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}
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} else {
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int to_read = MIN(body_left,read_chunk_size);
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ByteArray ret;
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ret.resize(to_read);
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ByteArray::Write w = ret.write();
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int _offset = 0;
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while (to_read > 0) {
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int rec=0;
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err = _get_http_data(w.ptr()+_offset,to_read,rec);
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if (rec>0) {
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body_left-=rec;
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to_read-=rec;
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_offset += rec;
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} else {
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if (to_read>0) //ended up reading less
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ret.resize(_offset);
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break;
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}
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}
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if (body_left==0) {
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status=STATUS_CONNECTED;
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}
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return ret;
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}
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if (err!=OK) {
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close();
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if (err==ERR_FILE_EOF) {
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status=STATUS_DISCONNECTED; //server disconnected
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} else {
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status=STATUS_CONNECTION_ERROR;
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}
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} else if (body_left==0 && !chunked) {
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status=STATUS_CONNECTED;
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}
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return ByteArray();
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}
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HTTPClient::Status HTTPClient::get_status() const {
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return status;
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}
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void HTTPClient::set_blocking_mode(bool p_enable) {
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blocking=p_enable;
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}
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bool HTTPClient::is_blocking_mode_enabled() const{
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return blocking;
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}
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Error HTTPClient::_get_http_data(uint8_t* p_buffer, int p_bytes,int &r_received) {
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if (blocking) {
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Error err = connection->get_data(p_buffer,p_bytes);
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if (err==OK)
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r_received=p_bytes;
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else
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r_received=0;
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return err;
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} else {
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return connection->get_partial_data(p_buffer,p_bytes,r_received);
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}
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}
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void HTTPClient::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("connect:Error","host","port","use_ssl","verify_host"),&HTTPClient::connect,DEFVAL(false),DEFVAL(true));
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ObjectTypeDB::bind_method(_MD("set_connection","connection:StreamPeer"),&HTTPClient::set_connection);
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ObjectTypeDB::bind_method(_MD("request","method","url","headers","body"),&HTTPClient::request,DEFVAL(String()));
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ObjectTypeDB::bind_method(_MD("send_body_text","body"),&HTTPClient::send_body_text);
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ObjectTypeDB::bind_method(_MD("send_body_data","body"),&HTTPClient::send_body_data);
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ObjectTypeDB::bind_method(_MD("close"),&HTTPClient::close);
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ObjectTypeDB::bind_method(_MD("has_response"),&HTTPClient::has_response);
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ObjectTypeDB::bind_method(_MD("is_response_chunked"),&HTTPClient::is_response_chunked);
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ObjectTypeDB::bind_method(_MD("get_response_code"),&HTTPClient::get_response_code);
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ObjectTypeDB::bind_method(_MD("get_response_headers"),&HTTPClient::_get_response_headers);
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ObjectTypeDB::bind_method(_MD("get_response_headers_as_dictionary"),&HTTPClient::_get_response_headers_as_dictionary);
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ObjectTypeDB::bind_method(_MD("get_response_body_length"),&HTTPClient::get_response_body_length);
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ObjectTypeDB::bind_method(_MD("read_response_body_chunk"),&HTTPClient::read_response_body_chunk);
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ObjectTypeDB::bind_method(_MD("set_read_chunk_size","bytes"),&HTTPClient::set_read_chunk_size);
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ObjectTypeDB::bind_method(_MD("set_blocking_mode","enabled"),&HTTPClient::set_blocking_mode);
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ObjectTypeDB::bind_method(_MD("is_blocking_mode_enabled"),&HTTPClient::is_blocking_mode_enabled);
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ObjectTypeDB::bind_method(_MD("get_status"),&HTTPClient::get_status);
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ObjectTypeDB::bind_method(_MD("poll:Error"),&HTTPClient::poll);
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ObjectTypeDB::bind_method(_MD("query_string_from_dict:String","fields"),&HTTPClient::query_string_from_dict);
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BIND_CONSTANT( METHOD_GET );
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BIND_CONSTANT( METHOD_HEAD );
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BIND_CONSTANT( METHOD_POST );
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BIND_CONSTANT( METHOD_PUT );
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BIND_CONSTANT( METHOD_DELETE );
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BIND_CONSTANT( METHOD_OPTIONS );
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BIND_CONSTANT( METHOD_TRACE );
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BIND_CONSTANT( METHOD_CONNECT );
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BIND_CONSTANT( METHOD_MAX );
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BIND_CONSTANT( STATUS_DISCONNECTED );
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BIND_CONSTANT( STATUS_RESOLVING ); //resolving hostname (if passed a hostname)
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|
BIND_CONSTANT( STATUS_CANT_RESOLVE );
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BIND_CONSTANT( STATUS_CONNECTING ); //connecting to ip
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|
BIND_CONSTANT( STATUS_CANT_CONNECT );
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|
BIND_CONSTANT( STATUS_CONNECTED ); //connected ); requests only accepted here
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|
BIND_CONSTANT( STATUS_REQUESTING ); // request in progress
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|
BIND_CONSTANT( STATUS_BODY ); // request resulted in body ); which must be read
|
|
BIND_CONSTANT( STATUS_CONNECTION_ERROR );
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|
BIND_CONSTANT( STATUS_SSL_HANDSHAKE_ERROR );
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|
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|
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BIND_CONSTANT( RESPONSE_CONTINUE );
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|
BIND_CONSTANT( RESPONSE_SWITCHING_PROTOCOLS );
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|
BIND_CONSTANT( RESPONSE_PROCESSING );
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|
|
|
// 2xx successful
|
|
BIND_CONSTANT( RESPONSE_OK );
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|
BIND_CONSTANT( RESPONSE_CREATED );
|
|
BIND_CONSTANT( RESPONSE_ACCEPTED );
|
|
BIND_CONSTANT( RESPONSE_NON_AUTHORITATIVE_INFORMATION );
|
|
BIND_CONSTANT( RESPONSE_NO_CONTENT );
|
|
BIND_CONSTANT( RESPONSE_RESET_CONTENT );
|
|
BIND_CONSTANT( RESPONSE_PARTIAL_CONTENT );
|
|
BIND_CONSTANT( RESPONSE_MULTI_STATUS );
|
|
BIND_CONSTANT( RESPONSE_IM_USED );
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|
|
|
// 3xx redirection
|
|
BIND_CONSTANT( RESPONSE_MULTIPLE_CHOICES );
|
|
BIND_CONSTANT( RESPONSE_MOVED_PERMANENTLY );
|
|
BIND_CONSTANT( RESPONSE_FOUND );
|
|
BIND_CONSTANT( RESPONSE_SEE_OTHER );
|
|
BIND_CONSTANT( RESPONSE_NOT_MODIFIED );
|
|
BIND_CONSTANT( RESPONSE_USE_PROXY );
|
|
BIND_CONSTANT( RESPONSE_TEMPORARY_REDIRECT );
|
|
|
|
// 4xx client error
|
|
BIND_CONSTANT( RESPONSE_BAD_REQUEST );
|
|
BIND_CONSTANT( RESPONSE_UNAUTHORIZED );
|
|
BIND_CONSTANT( RESPONSE_PAYMENT_REQUIRED );
|
|
BIND_CONSTANT( RESPONSE_FORBIDDEN );
|
|
BIND_CONSTANT( RESPONSE_NOT_FOUND );
|
|
BIND_CONSTANT( RESPONSE_METHOD_NOT_ALLOWED );
|
|
BIND_CONSTANT( RESPONSE_NOT_ACCEPTABLE );
|
|
BIND_CONSTANT( RESPONSE_PROXY_AUTHENTICATION_REQUIRED );
|
|
BIND_CONSTANT( RESPONSE_REQUEST_TIMEOUT );
|
|
BIND_CONSTANT( RESPONSE_CONFLICT );
|
|
BIND_CONSTANT( RESPONSE_GONE );
|
|
BIND_CONSTANT( RESPONSE_LENGTH_REQUIRED );
|
|
BIND_CONSTANT( RESPONSE_PRECONDITION_FAILED );
|
|
BIND_CONSTANT( RESPONSE_REQUEST_ENTITY_TOO_LARGE );
|
|
BIND_CONSTANT( RESPONSE_REQUEST_URI_TOO_LONG );
|
|
BIND_CONSTANT( RESPONSE_UNSUPPORTED_MEDIA_TYPE );
|
|
BIND_CONSTANT( RESPONSE_REQUESTED_RANGE_NOT_SATISFIABLE );
|
|
BIND_CONSTANT( RESPONSE_EXPECTATION_FAILED );
|
|
BIND_CONSTANT( RESPONSE_UNPROCESSABLE_ENTITY );
|
|
BIND_CONSTANT( RESPONSE_LOCKED );
|
|
BIND_CONSTANT( RESPONSE_FAILED_DEPENDENCY );
|
|
BIND_CONSTANT( RESPONSE_UPGRADE_REQUIRED );
|
|
|
|
// 5xx server error
|
|
BIND_CONSTANT( RESPONSE_INTERNAL_SERVER_ERROR );
|
|
BIND_CONSTANT( RESPONSE_NOT_IMPLEMENTED );
|
|
BIND_CONSTANT( RESPONSE_BAD_GATEWAY );
|
|
BIND_CONSTANT( RESPONSE_SERVICE_UNAVAILABLE );
|
|
BIND_CONSTANT( RESPONSE_GATEWAY_TIMEOUT );
|
|
BIND_CONSTANT( RESPONSE_HTTP_VERSION_NOT_SUPPORTED );
|
|
BIND_CONSTANT( RESPONSE_INSUFFICIENT_STORAGE );
|
|
BIND_CONSTANT( RESPONSE_NOT_EXTENDED );
|
|
|
|
}
|
|
|
|
void HTTPClient::set_read_chunk_size(int p_size) {
|
|
ERR_FAIL_COND(p_size<256 || p_size>(1<<24));
|
|
read_chunk_size=p_size;
|
|
}
|
|
|
|
String HTTPClient::query_string_from_dict(const Dictionary& p_dict) {
|
|
String query = "";
|
|
Array keys = p_dict.keys();
|
|
for (int i = 0; i < keys.size(); ++i) {
|
|
query += "&" + String(keys[i]).http_escape() + "=" + String(p_dict[keys[i]]).http_escape();
|
|
}
|
|
query.erase(0, 1);
|
|
return query;
|
|
}
|
|
|
|
HTTPClient::HTTPClient(){
|
|
|
|
tcp_connection = StreamPeerTCP::create_ref();
|
|
resolving = IP::RESOLVER_INVALID_ID;
|
|
status=STATUS_DISCONNECTED;
|
|
conn_port=80;
|
|
body_size=0;
|
|
chunked=false;
|
|
body_left=0;
|
|
chunk_left=0;
|
|
response_num=0;
|
|
ssl=false;
|
|
blocking=false;
|
|
read_chunk_size=4096;
|
|
}
|
|
|
|
HTTPClient::~HTTPClient(){
|
|
|
|
|
|
}
|
|
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