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virtualx-engine/core/io/http_client.cpp
Pedro J. Estébanez 2587fcccee Allow body-up-to-EOF HTTP responses 
Implements the same heuristic as Curl (and web browsers): if no `Content-Length`, no `Connection: keep-alive` and no chunked transfer encoding, assume th rest of the data until EOF is the body, gracefully setting the HTTP client back to the disconnected state.

Theoretically, this is not compliant with HTTP 1.1, by which `keep-alive` is the default, but in practice, an explicit header is sent by servers.
2018-05-22 15:08:31 +02:00

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/*************************************************************************/
/* http_client.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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. */
/*************************************************************************/
#include "http_client.h"
#include "io/stream_peer_ssl.h"
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) {
close();
conn_port = p_port;
conn_host = p_host;
ssl = p_ssl;
ssl_verify_host = p_verify_host;
String host_lower = conn_host.to_lower();
if (host_lower.begins_with("http://")) {
conn_host = conn_host.substr(7, conn_host.length() - 7);
} else if (host_lower.begins_with("https://")) {
ssl = true;
conn_host = conn_host.substr(8, conn_host.length() - 8);
}
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;
if (conn_host.is_valid_ip_address()) {
// Host contains valid IP
Error err = tcp_connection->connect_to_host(IP_Address(conn_host), p_port);
if (err) {
status = STATUS_CANT_CONNECT;
return err;
}
status = STATUS_CONNECTING;
} else {
// Host contains hostname and needs to be resolved to IP
resolving = IP::get_singleton()->resolve_hostname_queue_item(conn_host);
status = STATUS_RESOLVING;
}
return OK;
}
void HTTPClient::set_connection(const Ref<StreamPeer> &p_connection) {
close();
connection = p_connection;
status = STATUS_CONNECTED;
}
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);
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";
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;
for (int i = 0; i < p_headers.size(); i++) {
request += p_headers[i] + "\r\n";
if (add_clen && p_headers[i].find("Content-Length:") == 0) {
add_clen = false;
}
}
if (add_clen) {
request += "Content-Length: " + itos(p_body.size()) + "\r\n";
// Should it add utf8 encoding?
}
request += "\r\n";
CharString cs = request.utf8();
PoolVector<uint8_t> data;
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];
}
}
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) {
ERR_FAIL_INDEX_V(p_method, METHOD_MAX, ERR_INVALID_PARAMETER);
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";
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.length() > 0;
for (int i = 0; i < p_headers.size(); i++) {
request += p_headers[i] + "\r\n";
if (add_clen && p_headers[i].find("Content-Length:") == 0) {
add_clen = false;
}
}
if (add_clen) {
request += "Content-Length: " + itos(p_body.utf8().length()) + "\r\n";
// Should it add utf8 encoding?
}
request += "\r\n";
request += p_body;
CharString cs = request.utf8();
Error err = connection->put_data((const uint8_t *)cs.ptr(), cs.length());
if (err) {
close();
status = STATUS_CONNECTION_ERROR;
return err;
}
status = STATUS_REQUESTING;
return OK;
}
bool HTTPClient::has_response() const {
return response_headers.size() != 0;
}
bool HTTPClient::is_response_chunked() const {
return chunked;
}
int HTTPClient::get_response_code() const {
return response_num;
}
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++) {
r_response->push_back(response_headers[i]);
}
response_headers.clear();
return OK;
}
void HTTPClient::close() {
if (tcp_connection->get_status() != StreamPeerTCP::STATUS_NONE)
tcp_connection->disconnect_from_host();
connection.unref();
status = STATUS_DISCONNECTED;
if (resolving != IP::RESOLVER_INVALID_ID) {
IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
}
response_headers.clear();
response_str.clear();
body_size = 0;
body_left = 0;
chunk_left = 0;
read_until_eof = false;
response_num = 0;
}
Error HTTPClient::poll() {
switch (status) {
case STATUS_RESOLVING: {
ERR_FAIL_COND_V(resolving == IP::RESOLVER_INVALID_ID, ERR_BUG);
IP::ResolverStatus rstatus = IP::get_singleton()->get_resolve_item_status(resolving);
switch (rstatus) {
case IP::RESOLVER_STATUS_WAITING:
return OK; // Still resolving
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);
IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
if (err) {
status = STATUS_CANT_CONNECT;
return err;
}
status = STATUS_CONNECTING;
} break;
case IP::RESOLVER_STATUS_NONE:
case IP::RESOLVER_STATUS_ERROR: {
IP::get_singleton()->erase_resolve_item(resolving);
resolving = IP::RESOLVER_INVALID_ID;
close();
status = STATUS_CANT_RESOLVE;
return ERR_CANT_RESOLVE;
} break;
}
} break;
case STATUS_CONNECTING: {
StreamPeerTCP::Status s = tcp_connection->get_status();
switch (s) {
case StreamPeerTCP::STATUS_CONNECTING: {
return OK;
} break;
case StreamPeerTCP::STATUS_CONNECTED: {
if (ssl) {
Ref<StreamPeerSSL> ssl = StreamPeerSSL::create();
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;
}
status = STATUS_CONNECTED;
return OK;
} break;
case StreamPeerTCP::STATUS_ERROR:
case StreamPeerTCP::STATUS_NONE: {
close();
status = STATUS_CANT_CONNECT;
return ERR_CANT_CONNECT;
} break;
}
} break;
case STATUS_CONNECTED: {
// Connection established, requests can now be made
return OK;
} break;
case STATUS_REQUESTING: {
while (true) {
uint8_t byte;
int rec = 0;
Error err = _get_http_data(&byte, 1, rec);
if (err != OK) {
close();
status = STATUS_CONNECTION_ERROR;
return ERR_CONNECTION_ERROR;
}
if (rec == 0)
return OK; // Still requesting, keep trying!
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')) {
// End of response, parse.
response_str.push_back(0);
String response;
response.parse_utf8((const char *)response_str.ptr());
Vector<String> responses = response.split("\n");
body_size = 0;
chunked = false;
body_left = 0;
chunk_left = 0;
read_until_eof = false;
response_str.clear();
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++) {
String header = responses[i].strip_edges();
String s = header.to_lower();
if (s.length() == 0)
continue;
if (s.begins_with("content-length:")) {
body_size = s.substr(s.find(":") + 1, s.length()).strip_edges().to_int();
body_left = body_size;
} else if (s.begins_with("transfer-encoding:")) {
String encoding = header.substr(header.find(":") + 1, header.length()).strip_edges();
if (encoding == "chunked") {
chunked = true;
}
} else if (s.begins_with("connection: keep-alive")) {
keep_alive = true;
}
if (i == 0 && responses[i].begins_with("HTTP")) {
String num = responses[i].get_slicec(' ', 1);
response_num = num.to_int();
} else {
response_headers.push_back(header);
}
}
if (body_size || chunked) {
status = STATUS_BODY;
} else if (!keep_alive) {
read_until_eof = true;
status = STATUS_BODY;
} else {
status = STATUS_CONNECTED;
}
return OK;
}
}
// Wait for response
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() {
ERR_FAIL_COND_V(status != STATUS_BODY, PoolByteArray());
Error err = OK;
if (chunked) {
while (true) {
if (chunk_left == 0) {
// Reading length
uint8_t b;
int rec = 0;
err = _get_http_data(&b, 1, rec);
if (rec == 0)
break;
chunk.push_back(b);
if (chunk.size() > 32) {
ERR_PRINT("HTTP Invalid chunk hex len");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
}
if (chunk.size() > 2 && chunk[chunk.size() - 2] == '\r' && chunk[chunk.size() - 1] == '\n') {
int len = 0;
for (int i = 0; i < chunk.size() - 2; i++) {
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;
else {
ERR_PRINT("HTTP Chunk len not in hex!!");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
}
len <<= 4;
len |= v;
if (len > (1 << 24)) {
ERR_PRINT("HTTP Chunk too big!! >16mb");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
}
}
if (len == 0) {
// End reached!
status = STATUS_CONNECTED;
chunk.clear();
return PoolByteArray();
}
chunk_left = len + 2;
chunk.resize(chunk_left);
}
} else {
int rec = 0;
err = _get_http_data(&chunk[chunk.size() - chunk_left], chunk_left, rec);
if (rec == 0) {
break;
}
chunk_left -= rec;
if (chunk_left == 0) {
if (chunk[chunk.size() - 2] != '\r' || chunk[chunk.size() - 1] != '\n') {
ERR_PRINT("HTTP Invalid chunk terminator (not \\r\\n)");
status = STATUS_CONNECTION_ERROR;
return PoolByteArray();
}
PoolByteArray ret;
ret.resize(chunk.size() - 2);
{
PoolByteArray::Write w = ret.write();
copymem(w.ptr(), chunk.ptr(), chunk.size() - 2);
}
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) {
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);
}
}
}
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;
}
}
}
if (err != OK) {
close();
if (err == ERR_FILE_EOF) {
status = STATUS_DISCONNECTED; // Server disconnected
} else {
status = STATUS_CONNECTION_ERROR;
}
} else if (body_left == 0 && !chunked) {
status = STATUS_CONNECTED;
}
return PoolByteArray();
}
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;
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;
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;
}
void HTTPClient::_bind_methods() {
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);
BIND_ENUM_CONSTANT(STATUS_RESOLVING); // Resolving hostname (if hostname was passed in)
BIND_ENUM_CONSTANT(STATUS_CANT_RESOLVE);
BIND_ENUM_CONSTANT(STATUS_CONNECTING); // Connecting to IP
BIND_ENUM_CONSTANT(STATUS_CANT_CONNECT);
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);
// 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);
// 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);
// 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);
// 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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