godot/core/io/http_client.cpp

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/*************************************************************************/
/* http_client.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
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/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
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#include "http_client.h"
#include "io/stream_peer_ssl.h"
#include "version.h"
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const char *HTTPClient::_methods[METHOD_MAX] = {
"GET",
"HEAD",
"POST",
"PUT",
"DELETE",
"OPTIONS",
"TRACE",
"CONNECT",
"PATCH"
};
#ifndef JAVASCRIPT_ENABLED
Error HTTPClient::connect_to_host(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;
conn_host = p_host;
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ssl = p_ssl;
ssl_verify_host = p_verify_host;
String host_lower = conn_host.to_lower();
if (host_lower.begins_with("http://")) {
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conn_host = conn_host.substr(7, conn_host.length() - 7);
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} else if (host_lower.begins_with("https://")) {
ssl = true;
conn_host = conn_host.substr(8, conn_host.length() - 8);
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}
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ERR_FAIL_COND_V(conn_host.length() < HOST_MIN_LEN, ERR_INVALID_PARAMETER);
if (conn_port < 0) {
if (ssl) {
conn_port = PORT_HTTPS;
} else {
conn_port = PORT_HTTP;
}
}
connection = tcp_connection;
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if (conn_host.is_valid_ip_address()) {
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// Host contains valid IP
Error err = tcp_connection->connect_to_host(IP_Address(conn_host), p_port);
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if (err) {
status = STATUS_CANT_CONNECT;
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return err;
}
status = STATUS_CONNECTING;
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} else {
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// Host contains hostname and needs to be resolved to IP
resolving = IP::get_singleton()->resolve_hostname_queue_item(conn_host);
status = STATUS_RESOLVING;
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}
return OK;
}
void HTTPClient::set_connection(const Ref<StreamPeer> &p_connection) {
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close();
connection = p_connection;
status = STATUS_CONNECTED;
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}
Ref<StreamPeer> HTTPClient::get_connection() const {
return connection;
}
Error HTTPClient::request_raw(Method p_method, const String &p_url, const Vector<String> &p_headers, const PoolVector<uint8_t> &p_body) {
ERR_FAIL_INDEX_V(p_method, METHOD_MAX, ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V(!p_url.begins_with("/"), ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(connection.is_null(), ERR_INVALID_DATA);
String request = String(_methods[p_method]) + " " + p_url + " HTTP/1.1\r\n";
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if ((ssl && conn_port == PORT_HTTPS) || (!ssl && conn_port == PORT_HTTP)) {
// Don't append the standard ports
request += "Host: " + conn_host + "\r\n";
} else {
request += "Host: " + conn_host + ":" + itos(conn_port) + "\r\n";
}
bool add_clen = p_body.size() > 0;
bool add_uagent = true;
bool add_accept = true;
for (int i = 0; i < p_headers.size(); i++) {
request += p_headers[i] + "\r\n";
if (add_clen && p_headers[i].findn("Content-Length:") == 0) {
add_clen = false;
}
if (add_uagent && p_headers[i].findn("User-Agent:") == 0) {
add_uagent = false;
}
if (add_accept && p_headers[i].findn("Accept:") == 0) {
add_accept = false;
}
}
if (add_clen) {
request += "Content-Length: " + itos(p_body.size()) + "\r\n";
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// Should it add utf8 encoding?
}
if (add_uagent) {
request += "User-Agent: GodotEngine/" + String(VERSION_FULL_BUILD) + " (" + OS::get_singleton()->get_name() + ")\r\n";
}
if (add_accept) {
request += "Accept: */*\r\n";
}
request += "\r\n";
CharString cs = request.utf8();
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PoolVector<uint8_t> data;
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data.resize(cs.length());
{
PoolVector<uint8_t>::Write data_write = data.write();
for (int i = 0; i < cs.length(); i++) {
data_write[i] = cs[i];
}
}
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data.append_array(p_body);
PoolVector<uint8_t>::Read r = data.read();
Error err = connection->put_data(&r[0], data.size());
if (err) {
close();
status = STATUS_CONNECTION_ERROR;
return err;
}
status = STATUS_REQUESTING;
return OK;
}
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(!p_url.begins_with("/"), ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(connection.is_null(), ERR_INVALID_DATA);
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String request = String(_methods[p_method]) + " " + p_url + " HTTP/1.1\r\n";
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if ((ssl && conn_port == PORT_HTTPS) || (!ssl && conn_port == PORT_HTTP)) {
// Don't append the standard ports
request += "Host: " + conn_host + "\r\n";
} else {
request += "Host: " + conn_host + ":" + itos(conn_port) + "\r\n";
}
bool add_uagent = true;
bool add_accept = true;
bool add_clen = p_body.length() > 0;
for (int i = 0; i < p_headers.size(); i++) {
request += p_headers[i] + "\r\n";
if (add_clen && p_headers[i].findn("Content-Length:") == 0) {
add_clen = false;
}
if (add_uagent && p_headers[i].findn("User-Agent:") == 0) {
add_uagent = false;
}
if (add_accept && p_headers[i].findn("Accept:") == 0) {
add_accept = false;
}
}
if (add_clen) {
request += "Content-Length: " + itos(p_body.utf8().length()) + "\r\n";
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// Should it add utf8 encoding?
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}
if (add_uagent) {
request += "User-Agent: GodotEngine/" + String(VERSION_FULL_BUILD) + " (" + OS::get_singleton()->get_name() + ")\r\n";
}
if (add_accept) {
request += "Accept: */*\r\n";
}
request += "\r\n";
request += p_body;
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CharString cs = request.utf8();
Error err = connection->put_data((const uint8_t *)cs.ptr(), cs.length());
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if (err) {
close();
status = STATUS_CONNECTION_ERROR;
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return err;
}
status = STATUS_REQUESTING;
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return OK;
}
bool HTTPClient::has_response() const {
return response_headers.size() != 0;
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}
bool HTTPClient::is_response_chunked() const {
return chunked;
}
int HTTPClient::get_response_code() const {
return response_num;
}
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Error HTTPClient::get_response_headers(List<String> *r_response) {
if (!response_headers.size())
return ERR_INVALID_PARAMETER;
for (int i = 0; i < response_headers.size(); i++) {
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r_response->push_back(response_headers[i]);
}
response_headers.clear();
return OK;
}
void HTTPClient::close() {
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if (tcp_connection->get_status() != StreamPeerTCP::STATUS_NONE)
tcp_connection->disconnect_from_host();
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connection.unref();
status = STATUS_DISCONNECTED;
if (resolving != IP::RESOLVER_INVALID_ID) {
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IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
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}
response_headers.clear();
response_str.clear();
body_size = 0;
body_left = 0;
chunk_left = 0;
read_until_eof = false;
response_num = 0;
handshaking = false;
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}
Error HTTPClient::poll() {
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switch (status) {
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case STATUS_RESOLVING: {
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);
switch (rstatus) {
case IP::RESOLVER_STATUS_WAITING:
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return OK; // Still resolving
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case IP::RESOLVER_STATUS_DONE: {
IP_Address host = IP::get_singleton()->get_resolve_item_address(resolving);
Error err = tcp_connection->connect_to_host(host, conn_port);
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IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
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if (err) {
status = STATUS_CANT_CONNECT;
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return err;
}
status = STATUS_CONNECTING;
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} break;
case IP::RESOLVER_STATUS_NONE:
case IP::RESOLVER_STATUS_ERROR: {
IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
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close();
status = STATUS_CANT_RESOLVE;
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return ERR_CANT_RESOLVE;
} break;
}
} break;
case STATUS_CONNECTING: {
StreamPeerTCP::Status s = tcp_connection->get_status();
switch (s) {
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case StreamPeerTCP::STATUS_CONNECTING: {
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return OK;
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} break;
case StreamPeerTCP::STATUS_CONNECTED: {
if (ssl) {
Ref<StreamPeerSSL> ssl;
if (!handshaking) {
// Connect the StreamPeerSSL and start handshaking
ssl = Ref<StreamPeerSSL>(StreamPeerSSL::create());
ssl->set_blocking_handshake_enabled(false);
Error err = ssl->connect_to_stream(tcp_connection, ssl_verify_host, conn_host);
if (err != OK) {
close();
status = STATUS_SSL_HANDSHAKE_ERROR;
return ERR_CANT_CONNECT;
}
connection = ssl;
handshaking = true;
} else {
// We are already handshaking, which means we can use your already active SSL connection
ssl = static_cast<Ref<StreamPeerSSL> >(connection);
ssl->poll(); // Try to finish the handshake
}
if (ssl->get_status() == StreamPeerSSL::STATUS_CONNECTED) {
// Handshake has been successfull
handshaking = false;
status = STATUS_CONNECTED;
return OK;
} else if (ssl->get_status() != StreamPeerSSL::STATUS_HANDSHAKING) {
// Handshake has failed
close();
status = STATUS_SSL_HANDSHAKE_ERROR;
return ERR_CANT_CONNECT;
}
// ... we will need to poll more for handshake to finish
} else {
status = STATUS_CONNECTED;
}
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return OK;
} break;
case StreamPeerTCP::STATUS_ERROR:
case StreamPeerTCP::STATUS_NONE: {
close();
status = STATUS_CANT_CONNECT;
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return ERR_CANT_CONNECT;
} break;
}
} break;
case STATUS_CONNECTED: {
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// Connection established, requests can now be made
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return OK;
} break;
case STATUS_REQUESTING: {
while (true) {
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uint8_t byte;
int rec = 0;
Error err = _get_http_data(&byte, 1, rec);
if (err != OK) {
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close();
status = STATUS_CONNECTION_ERROR;
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return ERR_CONNECTION_ERROR;
}
if (rec == 0)
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return OK; // Still requesting, keep trying!
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response_str.push_back(byte);
int rs = response_str.size();
if (
(rs >= 2 && response_str[rs - 2] == '\n' && response_str[rs - 1] == '\n') ||
(rs >= 4 && response_str[rs - 4] == '\r' && response_str[rs - 3] == '\n' && response_str[rs - 2] == '\r' && response_str[rs - 1] == '\n')) {
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// End of response, parse.
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response_str.push_back(0);
String response;
response.parse_utf8((const char *)response_str.ptr());
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Vector<String> responses = response.split("\n");
body_size = 0;
chunked = false;
body_left = 0;
chunk_left = 0;
read_until_eof = false;
response_str.clear();
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response_headers.clear();
response_num = RESPONSE_OK;
// Per the HTTP 1.1 spec, keep-alive is the default, but in practice
// it's safe to assume it only if the explicit header is found, allowing
// to handle body-up-to-EOF responses on naive servers; that's what Curl
// and browsers do
bool keep_alive = false;
for (int i = 0; i < responses.size(); i++) {
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String header = responses[i].strip_edges();
String s = header.to_lower();
if (s.length() == 0)
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continue;
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if (s.begins_with("content-length:")) {
body_size = s.substr(s.find(":") + 1, s.length()).strip_edges().to_int();
body_left = body_size;
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} else if (s.begins_with("transfer-encoding:")) {
String encoding = header.substr(header.find(":") + 1, header.length()).strip_edges();
if (encoding == "chunked") {
chunked = true;
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}
} else if (s.begins_with("connection: keep-alive")) {
keep_alive = true;
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}
if (i == 0 && responses[i].begins_with("HTTP")) {
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String num = responses[i].get_slicec(' ', 1);
response_num = num.to_int();
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} else {
response_headers.push_back(header);
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}
}
if (body_size || chunked) {
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status = STATUS_BODY;
} else if (!keep_alive) {
read_until_eof = true;
status = STATUS_BODY;
} else {
status = STATUS_CONNECTED;
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}
return OK;
}
}
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// Wait for response
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return OK;
} break;
case STATUS_DISCONNECTED: {
return ERR_UNCONFIGURED;
} break;
case STATUS_CONNECTION_ERROR: {
return ERR_CONNECTION_ERROR;
} break;
case STATUS_CANT_CONNECT: {
return ERR_CANT_CONNECT;
} break;
case STATUS_CANT_RESOLVE: {
return ERR_CANT_RESOLVE;
} break;
}
return OK;
}
int HTTPClient::get_response_body_length() const {
return body_size;
}
PoolByteArray HTTPClient::read_response_body_chunk() {
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ERR_FAIL_COND_V(status != STATUS_BODY, PoolByteArray());
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Error err = OK;
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if (chunked) {
while (true) {
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if (chunk_left == 0) {
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// Reading length
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uint8_t b;
int rec = 0;
err = _get_http_data(&b, 1, rec);
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if (rec == 0)
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break;
chunk.push_back(b);
if (chunk.size() > 32) {
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ERR_PRINT("HTTP Invalid chunk hex len");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
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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;
for (int i = 0; i < chunk.size() - 2; i++) {
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char c = chunk[i];
int v = 0;
if (c >= '0' && c <= '9')
v = c - '0';
else if (c >= 'a' && c <= 'f')
v = c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
v = c - 'A' + 10;
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else {
ERR_PRINT("HTTP Chunk len not in hex!!");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
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}
len <<= 4;
len |= v;
if (len > (1 << 24)) {
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ERR_PRINT("HTTP Chunk too big!! >16mb");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
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}
}
if (len == 0) {
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// End reached!
status = STATUS_CONNECTED;
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chunk.clear();
return PoolByteArray();
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}
chunk_left = len + 2;
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chunk.resize(chunk_left);
}
} else {
int rec = 0;
err = _get_http_data(&chunk.write[chunk.size() - chunk_left], chunk_left, rec);
if (rec == 0) {
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break;
}
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)");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
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}
PoolByteArray ret;
ret.resize(chunk.size() - 2);
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{
PoolByteArray::Write w = ret.write();
copymem(w.ptr(), chunk.ptr(), chunk.size() - 2);
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}
chunk.clear();
return ret;
}
break;
}
}
} else {
int to_read = !read_until_eof ? MIN(body_left, read_chunk_size) : read_chunk_size;
PoolByteArray ret;
ret.resize(to_read);
int _offset = 0;
while (read_until_eof || to_read > 0) {
int rec = 0;
{
PoolByteArray::Write w = ret.write();
err = _get_http_data(w.ptr() + _offset, to_read, rec);
}
if (rec < 0) {
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if (to_read > 0) // Ended up reading less
ret.resize(_offset);
break;
} else {
_offset += rec;
if (!read_until_eof) {
body_left -= rec;
to_read -= rec;
} else {
if (rec < to_read) {
ret.resize(_offset);
err = ERR_FILE_EOF;
break;
}
ret.resize(_offset + to_read);
}
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}
}
if (!read_until_eof) {
if (body_left == 0) {
status = STATUS_CONNECTED;
}
return ret;
} else {
if (err == ERR_FILE_EOF) {
err = OK; // EOF is expected here
close();
return ret;
}
}
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}
if (err != OK) {
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close();
if (err == ERR_FILE_EOF) {
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status = STATUS_DISCONNECTED; // Server disconnected
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} else {
status = STATUS_CONNECTION_ERROR;
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}
} else if (body_left == 0 && !chunked) {
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status = STATUS_CONNECTED;
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}
return PoolByteArray();
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}
HTTPClient::Status HTTPClient::get_status() const {
return status;
}
void HTTPClient::set_blocking_mode(bool p_enable) {
blocking = p_enable;
}
bool HTTPClient::is_blocking_mode_enabled() const {
return blocking;
}
Error HTTPClient::_get_http_data(uint8_t *p_buffer, int p_bytes, int &r_received) {
if (blocking) {
Error err = connection->get_data(p_buffer, p_bytes);
if (err == OK)
r_received = p_bytes;
else
r_received = 0;
return err;
} else {
return connection->get_partial_data(p_buffer, p_bytes, r_received);
}
}
void HTTPClient::set_read_chunk_size(int p_size) {
ERR_FAIL_COND(p_size < 256 || p_size > (1 << 24));
read_chunk_size = p_size;
}
HTTPClient::HTTPClient() {
tcp_connection = StreamPeerTCP::create_ref();
resolving = IP::RESOLVER_INVALID_ID;
status = STATUS_DISCONNECTED;
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conn_port = -1;
body_size = 0;
chunked = false;
body_left = 0;
read_until_eof = false;
chunk_left = 0;
response_num = 0;
ssl = false;
blocking = false;
handshaking = false;
read_chunk_size = 4096;
}
HTTPClient::~HTTPClient() {
}
#endif // #ifndef JAVASCRIPT_ENABLED
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) {
String encoded_key = String(keys[i]).http_escape();
Variant value = p_dict[keys[i]];
switch (value.get_type()) {
case Variant::ARRAY: {
// Repeat the key with every values
Array values = value;
for (int j = 0; j < values.size(); ++j) {
query += "&" + encoded_key + "=" + String(values[j]).http_escape();
}
break;
}
case Variant::NIL: {
// Add the key with no value
query += "&" + encoded_key;
break;
}
default: {
// Add the key-value pair
query += "&" + encoded_key + "=" + String(value).http_escape();
}
}
}
query.erase(0, 1);
return query;
}
Dictionary HTTPClient::_get_response_headers_as_dictionary() {
List<String> rh;
get_response_headers(&rh);
Dictionary ret;
for (const List<String>::Element *E = rh.front(); E; E = E->next()) {
String s = E->get();
int sp = s.find(":");
if (sp == -1)
continue;
String key = s.substr(0, sp).strip_edges();
String value = s.substr(sp + 1, s.length()).strip_edges();
ret[key] = value;
}
return ret;
}
PoolStringArray HTTPClient::_get_response_headers() {
List<String> rh;
get_response_headers(&rh);
PoolStringArray ret;
ret.resize(rh.size());
int idx = 0;
for (const List<String>::Element *E = rh.front(); E; E = E->next()) {
ret.set(idx++, E->get());
}
return ret;
}
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void HTTPClient::_bind_methods() {
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ClassDB::bind_method(D_METHOD("connect_to_host", "host", "port", "use_ssl", "verify_host"), &HTTPClient::connect_to_host, DEFVAL(-1), DEFVAL(false), DEFVAL(true));
ClassDB::bind_method(D_METHOD("set_connection", "connection"), &HTTPClient::set_connection);
ClassDB::bind_method(D_METHOD("get_connection"), &HTTPClient::get_connection);
ClassDB::bind_method(D_METHOD("request_raw", "method", "url", "headers", "body"), &HTTPClient::request_raw);
ClassDB::bind_method(D_METHOD("request", "method", "url", "headers", "body"), &HTTPClient::request, DEFVAL(String()));
ClassDB::bind_method(D_METHOD("close"), &HTTPClient::close);
ClassDB::bind_method(D_METHOD("has_response"), &HTTPClient::has_response);
ClassDB::bind_method(D_METHOD("is_response_chunked"), &HTTPClient::is_response_chunked);
ClassDB::bind_method(D_METHOD("get_response_code"), &HTTPClient::get_response_code);
ClassDB::bind_method(D_METHOD("get_response_headers"), &HTTPClient::_get_response_headers);
ClassDB::bind_method(D_METHOD("get_response_headers_as_dictionary"), &HTTPClient::_get_response_headers_as_dictionary);
ClassDB::bind_method(D_METHOD("get_response_body_length"), &HTTPClient::get_response_body_length);
ClassDB::bind_method(D_METHOD("read_response_body_chunk"), &HTTPClient::read_response_body_chunk);
ClassDB::bind_method(D_METHOD("set_read_chunk_size", "bytes"), &HTTPClient::set_read_chunk_size);
ClassDB::bind_method(D_METHOD("set_blocking_mode", "enabled"), &HTTPClient::set_blocking_mode);
ClassDB::bind_method(D_METHOD("is_blocking_mode_enabled"), &HTTPClient::is_blocking_mode_enabled);
ClassDB::bind_method(D_METHOD("get_status"), &HTTPClient::get_status);
ClassDB::bind_method(D_METHOD("poll"), &HTTPClient::poll);
ClassDB::bind_method(D_METHOD("query_string_from_dict", "fields"), &HTTPClient::query_string_from_dict);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "blocking_mode_enabled"), "set_blocking_mode", "is_blocking_mode_enabled");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "connection", PROPERTY_HINT_RESOURCE_TYPE, "StreamPeer", 0), "set_connection", "get_connection");
BIND_ENUM_CONSTANT(METHOD_GET);
BIND_ENUM_CONSTANT(METHOD_HEAD);
BIND_ENUM_CONSTANT(METHOD_POST);
BIND_ENUM_CONSTANT(METHOD_PUT);
BIND_ENUM_CONSTANT(METHOD_DELETE);
BIND_ENUM_CONSTANT(METHOD_OPTIONS);
BIND_ENUM_CONSTANT(METHOD_TRACE);
BIND_ENUM_CONSTANT(METHOD_CONNECT);
BIND_ENUM_CONSTANT(METHOD_PATCH);
BIND_ENUM_CONSTANT(METHOD_MAX);
BIND_ENUM_CONSTANT(STATUS_DISCONNECTED);
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BIND_ENUM_CONSTANT(STATUS_RESOLVING); // Resolving hostname (if hostname was passed in)
BIND_ENUM_CONSTANT(STATUS_CANT_RESOLVE);
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BIND_ENUM_CONSTANT(STATUS_CONNECTING); // Connecting to IP
BIND_ENUM_CONSTANT(STATUS_CANT_CONNECT);
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BIND_ENUM_CONSTANT(STATUS_CONNECTED); // Connected, now accepting requests
BIND_ENUM_CONSTANT(STATUS_REQUESTING); // Request in progress
BIND_ENUM_CONSTANT(STATUS_BODY); // Request resulted in body which must be read
BIND_ENUM_CONSTANT(STATUS_CONNECTION_ERROR);
BIND_ENUM_CONSTANT(STATUS_SSL_HANDSHAKE_ERROR);
BIND_ENUM_CONSTANT(RESPONSE_CONTINUE);
BIND_ENUM_CONSTANT(RESPONSE_SWITCHING_PROTOCOLS);
BIND_ENUM_CONSTANT(RESPONSE_PROCESSING);
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// 2xx successful
BIND_ENUM_CONSTANT(RESPONSE_OK);
BIND_ENUM_CONSTANT(RESPONSE_CREATED);
BIND_ENUM_CONSTANT(RESPONSE_ACCEPTED);
BIND_ENUM_CONSTANT(RESPONSE_NON_AUTHORITATIVE_INFORMATION);
BIND_ENUM_CONSTANT(RESPONSE_NO_CONTENT);
BIND_ENUM_CONSTANT(RESPONSE_RESET_CONTENT);
BIND_ENUM_CONSTANT(RESPONSE_PARTIAL_CONTENT);
BIND_ENUM_CONSTANT(RESPONSE_MULTI_STATUS);
BIND_ENUM_CONSTANT(RESPONSE_ALREADY_REPORTED);
BIND_ENUM_CONSTANT(RESPONSE_IM_USED);
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// 3xx redirection
BIND_ENUM_CONSTANT(RESPONSE_MULTIPLE_CHOICES);
BIND_ENUM_CONSTANT(RESPONSE_MOVED_PERMANENTLY);
BIND_ENUM_CONSTANT(RESPONSE_FOUND);
BIND_ENUM_CONSTANT(RESPONSE_SEE_OTHER);
BIND_ENUM_CONSTANT(RESPONSE_NOT_MODIFIED);
BIND_ENUM_CONSTANT(RESPONSE_USE_PROXY);
BIND_ENUM_CONSTANT(RESPONSE_SWITCH_PROXY);
BIND_ENUM_CONSTANT(RESPONSE_TEMPORARY_REDIRECT);
BIND_ENUM_CONSTANT(RESPONSE_PERMANENT_REDIRECT);
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// 4xx client error
BIND_ENUM_CONSTANT(RESPONSE_BAD_REQUEST);
BIND_ENUM_CONSTANT(RESPONSE_UNAUTHORIZED);
BIND_ENUM_CONSTANT(RESPONSE_PAYMENT_REQUIRED);
BIND_ENUM_CONSTANT(RESPONSE_FORBIDDEN);
BIND_ENUM_CONSTANT(RESPONSE_NOT_FOUND);
BIND_ENUM_CONSTANT(RESPONSE_METHOD_NOT_ALLOWED);
BIND_ENUM_CONSTANT(RESPONSE_NOT_ACCEPTABLE);
BIND_ENUM_CONSTANT(RESPONSE_PROXY_AUTHENTICATION_REQUIRED);
BIND_ENUM_CONSTANT(RESPONSE_REQUEST_TIMEOUT);
BIND_ENUM_CONSTANT(RESPONSE_CONFLICT);
BIND_ENUM_CONSTANT(RESPONSE_GONE);
BIND_ENUM_CONSTANT(RESPONSE_LENGTH_REQUIRED);
BIND_ENUM_CONSTANT(RESPONSE_PRECONDITION_FAILED);
BIND_ENUM_CONSTANT(RESPONSE_REQUEST_ENTITY_TOO_LARGE);
BIND_ENUM_CONSTANT(RESPONSE_REQUEST_URI_TOO_LONG);
BIND_ENUM_CONSTANT(RESPONSE_UNSUPPORTED_MEDIA_TYPE);
BIND_ENUM_CONSTANT(RESPONSE_REQUESTED_RANGE_NOT_SATISFIABLE);
BIND_ENUM_CONSTANT(RESPONSE_EXPECTATION_FAILED);
BIND_ENUM_CONSTANT(RESPONSE_IM_A_TEAPOT);
BIND_ENUM_CONSTANT(RESPONSE_MISDIRECTED_REQUEST);
BIND_ENUM_CONSTANT(RESPONSE_UNPROCESSABLE_ENTITY);
BIND_ENUM_CONSTANT(RESPONSE_LOCKED);
BIND_ENUM_CONSTANT(RESPONSE_FAILED_DEPENDENCY);
BIND_ENUM_CONSTANT(RESPONSE_UPGRADE_REQUIRED);
BIND_ENUM_CONSTANT(RESPONSE_PRECONDITION_REQUIRED);
BIND_ENUM_CONSTANT(RESPONSE_TOO_MANY_REQUESTS);
BIND_ENUM_CONSTANT(RESPONSE_REQUEST_HEADER_FIELDS_TOO_LARGE);
BIND_ENUM_CONSTANT(RESPONSE_UNAVAILABLE_FOR_LEGAL_REASONS);
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// 5xx server error
BIND_ENUM_CONSTANT(RESPONSE_INTERNAL_SERVER_ERROR);
BIND_ENUM_CONSTANT(RESPONSE_NOT_IMPLEMENTED);
BIND_ENUM_CONSTANT(RESPONSE_BAD_GATEWAY);
BIND_ENUM_CONSTANT(RESPONSE_SERVICE_UNAVAILABLE);
BIND_ENUM_CONSTANT(RESPONSE_GATEWAY_TIMEOUT);
BIND_ENUM_CONSTANT(RESPONSE_HTTP_VERSION_NOT_SUPPORTED);
BIND_ENUM_CONSTANT(RESPONSE_VARIANT_ALSO_NEGOTIATES);
BIND_ENUM_CONSTANT(RESPONSE_INSUFFICIENT_STORAGE);
BIND_ENUM_CONSTANT(RESPONSE_LOOP_DETECTED);
BIND_ENUM_CONSTANT(RESPONSE_NOT_EXTENDED);
BIND_ENUM_CONSTANT(RESPONSE_NETWORK_AUTH_REQUIRED);
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}