/var/www/greso.tech/server/nsm/node_modules/@grpc/grpc-js/build/src
Edit: /var/www/greso.tech/server/nsm/node_modules/@grpc/grpc-js/build/src/transport.js (26888B)
"use strict";
/*
* Copyright 2023 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.Http2SubchannelConnector = void 0;
const http2 = require("http2");
const tls_1 = require("tls");
const channelz_1 = require("./channelz");
const constants_1 = require("./constants");
const http_proxy_1 = require("./http_proxy");
const logging = require("./logging");
const resolver_1 = require("./resolver");
const subchannel_address_1 = require("./subchannel-address");
const uri_parser_1 = require("./uri-parser");
const net = require("net");
const subchannel_call_1 = require("./subchannel-call");
const call_number_1 = require("./call-number");
const TRACER_NAME = 'transport';
const FLOW_CONTROL_TRACER_NAME = 'transport_flowctrl';
const clientVersion = require('../../package.json').version;
const { HTTP2_HEADER_AUTHORITY, HTTP2_HEADER_CONTENT_TYPE, HTTP2_HEADER_METHOD, HTTP2_HEADER_PATH, HTTP2_HEADER_TE, HTTP2_HEADER_USER_AGENT, } = http2.constants;
/* setInterval and setTimeout only accept signed 32 bit integers. JS doesn't
* have a constant for the max signed 32 bit integer, so this is a simple way
* to calculate it */
const KEEPALIVE_MAX_TIME_MS = ~(1 << 31);
const KEEPALIVE_TIMEOUT_MS = 20000;
const tooManyPingsData = Buffer.from('too_many_pings', 'ascii');
class Http2Transport {
constructor(session, subchannelAddress, options) {
this.session = session;
/**
* The amount of time in between sending pings
*/
this.keepaliveTimeMs = -1;
/**
* The amount of time to wait for an acknowledgement after sending a ping
*/
this.keepaliveTimeoutMs = KEEPALIVE_TIMEOUT_MS;
/**
* Timer reference tracking when the most recent ping will be considered lost
*/
this.keepaliveTimeoutId = null;
/**
* Indicates whether keepalive pings should be sent without any active calls
*/
this.keepaliveWithoutCalls = false;
this.activeCalls = new Set();
this.disconnectListeners = [];
this.disconnectHandled = false;
this.channelzEnabled = true;
/**
* Name of the remote server, if it is not the same as the subchannel
* address, i.e. if connecting through an HTTP CONNECT proxy.
*/
this.remoteName = null;
this.streamTracker = new channelz_1.ChannelzCallTracker();
this.keepalivesSent = 0;
this.messagesSent = 0;
this.messagesReceived = 0;
this.lastMessageSentTimestamp = null;
this.lastMessageReceivedTimestamp = null;
// Build user-agent string.
this.userAgent = [
options['grpc.primary_user_agent'],
`grpc-node-js/${clientVersion}`,
options['grpc.secondary_user_agent'],
]
.filter((e) => e)
.join(' '); // remove falsey values first
if ('grpc.keepalive_time_ms' in options) {
this.keepaliveTimeMs = options['grpc.keepalive_time_ms'];
}
if ('grpc.keepalive_timeout_ms' in options) {
this.keepaliveTimeoutMs = options['grpc.keepalive_timeout_ms'];
}
if ('grpc.keepalive_permit_without_calls' in options) {
this.keepaliveWithoutCalls =
options['grpc.keepalive_permit_without_calls'] === 1;
}
else {
this.keepaliveWithoutCalls = false;
}
this.keepaliveIntervalId = setTimeout(() => { }, 0);
clearTimeout(this.keepaliveIntervalId);
if (this.keepaliveWithoutCalls) {
this.startKeepalivePings();
}
this.subchannelAddressString = (0, subchannel_address_1.subchannelAddressToString)(subchannelAddress);
if (options['grpc.enable_channelz'] === 0) {
this.channelzEnabled = false;
}
this.channelzRef = (0, channelz_1.registerChannelzSocket)(this.subchannelAddressString, () => this.getChannelzInfo(), this.channelzEnabled);
session.once('close', () => {
this.trace('session closed');
this.stopKeepalivePings();
this.handleDisconnect();
});
session.once('goaway', (errorCode, lastStreamID, opaqueData) => {
let tooManyPings = false;
/* See the last paragraph of
* https://github.com/grpc/proposal/blob/master/A8-client-side-keepalive.md#basic-keepalive */
if (errorCode === http2.constants.NGHTTP2_ENHANCE_YOUR_CALM &&
opaqueData.equals(tooManyPingsData)) {
tooManyPings = true;
}
this.trace('connection closed by GOAWAY with code ' +
errorCode);
this.reportDisconnectToOwner(tooManyPings);
});
session.once('error', error => {
/* Do nothing here. Any error should also trigger a close event, which is
* where we want to handle that. */
this.trace('connection closed with error ' +
error.message);
});
if (logging.isTracerEnabled(TRACER_NAME)) {
session.on('remoteSettings', (settings) => {
this.trace('new settings received' +
(this.session !== session ? ' on the old connection' : '') +
': ' +
JSON.stringify(settings));
});
session.on('localSettings', (settings) => {
this.trace('local settings acknowledged by remote' +
(this.session !== session ? ' on the old connection' : '') +
': ' +
JSON.stringify(settings));
});
}
}
getChannelzInfo() {
var _a, _b, _c;
const sessionSocket = this.session.socket;
const remoteAddress = sessionSocket.remoteAddress ? (0, subchannel_address_1.stringToSubchannelAddress)(sessionSocket.remoteAddress, sessionSocket.remotePort) : null;
const localAddress = sessionSocket.localAddress ? (0, subchannel_address_1.stringToSubchannelAddress)(sessionSocket.localAddress, sessionSocket.localPort) : null;
let tlsInfo;
if (this.session.encrypted) {
const tlsSocket = sessionSocket;
const cipherInfo = tlsSocket.getCipher();
const certificate = tlsSocket.getCertificate();
const peerCertificate = tlsSocket.getPeerCertificate();
tlsInfo = {
cipherSuiteStandardName: (_a = cipherInfo.standardName) !== null && _a !== void 0 ? _a : null,
cipherSuiteOtherName: cipherInfo.standardName ? null : cipherInfo.name,
localCertificate: (certificate && 'raw' in certificate) ? certificate.raw : null,
remoteCertificate: (peerCertificate && 'raw' in peerCertificate) ? peerCertificate.raw : null
};
}
else {
tlsInfo = null;
}
const socketInfo = {
remoteAddress: remoteAddress,
localAddress: localAddress,
security: tlsInfo,
remoteName: this.remoteName,
streamsStarted: this.streamTracker.callsStarted,
streamsSucceeded: this.streamTracker.callsSucceeded,
streamsFailed: this.streamTracker.callsFailed,
messagesSent: this.messagesSent,
messagesReceived: this.messagesReceived,
keepAlivesSent: this.keepalivesSent,
lastLocalStreamCreatedTimestamp: this.streamTracker.lastCallStartedTimestamp,
lastRemoteStreamCreatedTimestamp: null,
lastMessageSentTimestamp: this.lastMessageSentTimestamp,
lastMessageReceivedTimestamp: this.lastMessageReceivedTimestamp,
localFlowControlWindow: (_b = this.session.state.localWindowSize) !== null && _b !== void 0 ? _b : null,
remoteFlowControlWindow: (_c = this.session.state.remoteWindowSize) !== null && _c !== void 0 ? _c : null
};
return socketInfo;
}
trace(text) {
logging.trace(constants_1.LogVerbosity.DEBUG, TRACER_NAME, '(' + this.channelzRef.id + ') ' + this.subchannelAddressString + ' ' + text);
}
keepaliveTrace(text) {
logging.trace(constants_1.LogVerbosity.DEBUG, 'keepalive', '(' + this.channelzRef.id + ') ' + this.subchannelAddressString + ' ' + text);
}
flowControlTrace(text) {
logging.trace(constants_1.LogVerbosity.DEBUG, FLOW_CONTROL_TRACER_NAME, '(' + this.channelzRef.id + ') ' + this.subchannelAddressString + ' ' + text);
}
internalsTrace(text) {
logging.trace(constants_1.LogVerbosity.DEBUG, 'transport_internals', '(' + this.channelzRef.id + ') ' + this.subchannelAddressString + ' ' + text);
}
/**
* Indicate to the owner of this object that this transport should no longer
* be used. That happens if the connection drops, or if the server sends a
* GOAWAY.
* @param tooManyPings If true, this was triggered by a GOAWAY with data
* indicating that the session was closed becaues the client sent too many
* pings.
* @returns
*/
reportDisconnectToOwner(tooManyPings) {
if (this.disconnectHandled) {
return;
}
this.disconnectHandled = true;
this.disconnectListeners.forEach(listener => listener(tooManyPings));
}
/**
* Handle connection drops, but not GOAWAYs.
*/
handleDisconnect() {
this.reportDisconnectToOwner(false);
/* Give calls an event loop cycle to finish naturally before reporting the
* disconnnection to them. */
setImmediate(() => {
for (const call of this.activeCalls) {
call.onDisconnect();
}
});
}
addDisconnectListener(listener) {
this.disconnectListeners.push(listener);
}
clearKeepaliveTimeout() {
if (!this.keepaliveTimeoutId) {
return;
}
clearTimeout(this.keepaliveTimeoutId);
this.keepaliveTimeoutId = null;
}
sendPing() {
var _a, _b;
if (this.channelzEnabled) {
this.keepalivesSent += 1;
}
this.keepaliveTrace('Sending ping with timeout ' + this.keepaliveTimeoutMs + 'ms');
if (!this.keepaliveTimeoutId) {
this.keepaliveTimeoutId = setTimeout(() => {
this.keepaliveTrace('Ping timeout passed without response');
this.handleDisconnect();
}, this.keepaliveTimeoutMs);
(_b = (_a = this.keepaliveTimeoutId).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
}
try {
this.session.ping((err, duration, payload) => {
this.keepaliveTrace('Received ping response');
this.clearKeepaliveTimeout();
});
}
catch (e) {
/* If we fail to send a ping, the connection is no longer functional, so
* we should discard it. */
this.handleDisconnect();
}
}
startKeepalivePings() {
var _a, _b;
if (this.keepaliveTimeMs < 0) {
return;
}
this.keepaliveIntervalId = setInterval(() => {
this.sendPing();
}, this.keepaliveTimeMs);
(_b = (_a = this.keepaliveIntervalId).unref) === null || _b === void 0 ? void 0 : _b.call(_a);
/* Don't send a ping immediately because whatever caused us to start
* sending pings should also involve some network activity. */
}
/**
* Stop keepalive pings when terminating a connection. This discards the
* outstanding ping timeout, so it should not be called if the same
* connection will still be used.
*/
stopKeepalivePings() {
clearInterval(this.keepaliveIntervalId);
this.clearKeepaliveTimeout();
}
removeActiveCall(call) {
this.activeCalls.delete(call);
if (this.activeCalls.size === 0) {
this.session.unref();
if (!this.keepaliveWithoutCalls) {
this.stopKeepalivePings();
}
}
}
addActiveCall(call) {
if (this.activeCalls.size === 0) {
this.session.ref();
if (!this.keepaliveWithoutCalls) {
this.startKeepalivePings();
}
}
this.activeCalls.add(call);
}
createCall(metadata, host, method, listener, subchannelCallStatsTracker) {
const headers = metadata.toHttp2Headers();
headers[HTTP2_HEADER_AUTHORITY] = host;
headers[HTTP2_HEADER_USER_AGENT] = this.userAgent;
headers[HTTP2_HEADER_CONTENT_TYPE] = 'application/grpc';
headers[HTTP2_HEADER_METHOD] = 'POST';
headers[HTTP2_HEADER_PATH] = method;
headers[HTTP2_HEADER_TE] = 'trailers';
let http2Stream;
/* In theory, if an error is thrown by session.request because session has
* become unusable (e.g. because it has received a goaway), this subchannel
* should soon see the corresponding close or goaway event anyway and leave
* READY. But we have seen reports that this does not happen
* (https://github.com/googleapis/nodejs-firestore/issues/1023#issuecomment-653204096)
* so for defense in depth, we just discard the session when we see an
* error here.
*/
try {
http2Stream = this.session.request(headers);
}
catch (e) {
this.handleDisconnect();
throw e;
}
this.flowControlTrace('local window size: ' +
this.session.state.localWindowSize +
' remote window size: ' +
this.session.state.remoteWindowSize);
this.internalsTrace('session.closed=' +
this.session.closed +
' session.destroyed=' +
this.session.destroyed +
' session.socket.destroyed=' +
this.session.socket.destroyed);
let eventTracker;
let call;
if (this.channelzEnabled) {
this.streamTracker.addCallStarted();
eventTracker = {
addMessageSent: () => {
var _a;
this.messagesSent += 1;
this.lastMessageSentTimestamp = new Date();
(_a = subchannelCallStatsTracker.addMessageSent) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker);
},
addMessageReceived: () => {
var _a;
this.messagesReceived += 1;
this.lastMessageReceivedTimestamp = new Date();
(_a = subchannelCallStatsTracker.addMessageReceived) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker);
},
onCallEnd: status => {
var _a;
(_a = subchannelCallStatsTracker.onCallEnd) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker, status);
this.removeActiveCall(call);
},
onStreamEnd: success => {
var _a;
if (success) {
this.streamTracker.addCallSucceeded();
}
else {
this.streamTracker.addCallFailed();
}
(_a = subchannelCallStatsTracker.onStreamEnd) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker, success);
}
};
}
else {
eventTracker = {
addMessageSent: () => {
var _a;
(_a = subchannelCallStatsTracker.addMessageSent) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker);
},
addMessageReceived: () => {
var _a;
(_a = subchannelCallStatsTracker.addMessageReceived) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker);
},
onCallEnd: (status) => {
var _a;
(_a = subchannelCallStatsTracker.onCallEnd) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker, status);
this.removeActiveCall(call);
},
onStreamEnd: (success) => {
var _a;
(_a = subchannelCallStatsTracker.onStreamEnd) === null || _a === void 0 ? void 0 : _a.call(subchannelCallStatsTracker, success);
}
};
}
call = new subchannel_call_1.Http2SubchannelCall(http2Stream, eventTracker, listener, this, (0, call_number_1.getNextCallNumber)());
this.addActiveCall(call);
return call;
}
getChannelzRef() {
return this.channelzRef;
}
getPeerName() {
return this.subchannelAddressString;
}
shutdown() {
this.session.close();
(0, channelz_1.unregisterChannelzRef)(this.channelzRef);
}
}
class Http2SubchannelConnector {
constructor(channelTarget) {
this.channelTarget = channelTarget;
this.session = null;
this.isShutdown = false;
}
trace(text) {
}
createSession(address, credentials, options, proxyConnectionResult) {
if (this.isShutdown) {
return Promise.reject();
}
return new Promise((resolve, reject) => {
var _a, _b, _c;
let remoteName;
if (proxyConnectionResult.realTarget) {
remoteName = (0, uri_parser_1.uriToString)(proxyConnectionResult.realTarget);
this.trace('creating HTTP/2 session through proxy to ' + (0, uri_parser_1.uriToString)(proxyConnectionResult.realTarget));
}
else {
remoteName = null;
this.trace('creating HTTP/2 session to ' + (0, subchannel_address_1.subchannelAddressToString)(address));
}
const targetAuthority = (0, resolver_1.getDefaultAuthority)((_a = proxyConnectionResult.realTarget) !== null && _a !== void 0 ? _a : this.channelTarget);
let connectionOptions = credentials._getConnectionOptions() || {};
connectionOptions.maxSendHeaderBlockLength = Number.MAX_SAFE_INTEGER;
if ('grpc-node.max_session_memory' in options) {
connectionOptions.maxSessionMemory = options['grpc-node.max_session_memory'];
}
else {
/* By default, set a very large max session memory limit, to effectively
* disable enforcement of the limit. Some testing indicates that Node's
* behavior degrades badly when this limit is reached, so we solve that
* by disabling the check entirely. */
connectionOptions.maxSessionMemory = Number.MAX_SAFE_INTEGER;
}
let addressScheme = 'http://';
if ('secureContext' in connectionOptions) {
addressScheme = 'https://';
// If provided, the value of grpc.ssl_target_name_override should be used
// to override the target hostname when checking server identity.
// This option is used for testing only.
if (options['grpc.ssl_target_name_override']) {
const sslTargetNameOverride = options['grpc.ssl_target_name_override'];
connectionOptions.checkServerIdentity = (host, cert) => {
return (0, tls_1.checkServerIdentity)(sslTargetNameOverride, cert);
};
connectionOptions.servername = sslTargetNameOverride;
}
else {
const authorityHostname = (_c = (_b = (0, uri_parser_1.splitHostPort)(targetAuthority)) === null || _b === void 0 ? void 0 : _b.host) !== null && _c !== void 0 ? _c : 'localhost';
// We want to always set servername to support SNI
connectionOptions.servername = authorityHostname;
}
if (proxyConnectionResult.socket) {
/* This is part of the workaround for
* https://github.com/nodejs/node/issues/32922. Without that bug,
* proxyConnectionResult.socket would always be a plaintext socket and
* this would say
* connectionOptions.socket = proxyConnectionResult.socket; */
connectionOptions.createConnection = (authority, option) => {
return proxyConnectionResult.socket;
};
}
}
else {
/* In all but the most recent versions of Node, http2.connect does not use
* the options when establishing plaintext connections, so we need to
* establish that connection explicitly. */
connectionOptions.createConnection = (authority, option) => {
if (proxyConnectionResult.socket) {
return proxyConnectionResult.socket;
}
else {
/* net.NetConnectOpts is declared in a way that is more restrictive
* than what net.connect will actually accept, so we use the type
* assertion to work around that. */
return net.connect(address);
}
};
}
connectionOptions = Object.assign(Object.assign({}, connectionOptions), address);
/* http2.connect uses the options here:
* https://github.com/nodejs/node/blob/70c32a6d190e2b5d7b9ff9d5b6a459d14e8b7d59/lib/internal/http2/core.js#L3028-L3036
* The spread operator overides earlier values with later ones, so any port
* or host values in the options will be used rather than any values extracted
* from the first argument. In addition, the path overrides the host and port,
* as documented for plaintext connections here:
* https://nodejs.org/api/net.html#net_socket_connect_options_connectlistener
* and for TLS connections here:
* https://nodejs.org/api/tls.html#tls_tls_connect_options_callback. In
* earlier versions of Node, http2.connect passes these options to
* tls.connect but not net.connect, so in the insecure case we still need
* to set the createConnection option above to create the connection
* explicitly. We cannot do that in the TLS case because http2.connect
* passes necessary additional options to tls.connect.
* The first argument just needs to be parseable as a URL and the scheme
* determines whether the connection will be established over TLS or not.
*/
const session = http2.connect(addressScheme + targetAuthority, connectionOptions);
this.session = session;
session.unref();
session.once('connect', () => {
session.removeAllListeners();
resolve(new Http2Transport(session, address, options));
this.session = null;
});
session.once('close', () => {
this.session = null;
reject();
});
session.once('error', error => {
this.trace('connection failed with error ' + error.message);
});
});
}
connect(address, credentials, options) {
var _a, _b;
if (this.isShutdown) {
return Promise.reject();
}
/* Pass connection options through to the proxy so that it's able to
* upgrade it's connection to support tls if needed.
* This is a workaround for https://github.com/nodejs/node/issues/32922
* See https://github.com/grpc/grpc-node/pull/1369 for more info. */
const connectionOptions = credentials._getConnectionOptions() || {};
if ('secureContext' in connectionOptions) {
connectionOptions.ALPNProtocols = ['h2'];
// If provided, the value of grpc.ssl_target_name_override should be used
// to override the target hostname when checking server identity.
// This option is used for testing only.
if (options['grpc.ssl_target_name_override']) {
const sslTargetNameOverride = options['grpc.ssl_target_name_override'];
connectionOptions.checkServerIdentity = (host, cert) => {
return (0, tls_1.checkServerIdentity)(sslTargetNameOverride, cert);
};
connectionOptions.servername = sslTargetNameOverride;
}
else {
if ('grpc.http_connect_target' in options) {
/* This is more or less how servername will be set in createSession
* if a connection is successfully established through the proxy.
* If the proxy is not used, these connectionOptions are discarded
* anyway */
const targetPath = (0, resolver_1.getDefaultAuthority)((_a = (0, uri_parser_1.parseUri)(options['grpc.http_connect_target'])) !== null && _a !== void 0 ? _a : {
path: 'localhost',
});
const hostPort = (0, uri_parser_1.splitHostPort)(targetPath);
connectionOptions.servername = (_b = hostPort === null || hostPort === void 0 ? void 0 : hostPort.host) !== null && _b !== void 0 ? _b : targetPath;
}
}
}
return (0, http_proxy_1.getProxiedConnection)(address, options, connectionOptions).then(result => this.createSession(address, credentials, options, result));
}
shutdown() {
var _a;
this.isShutdown = true;
(_a = this.session) === null || _a === void 0 ? void 0 : _a.close();
this.session = null;
}
}
exports.Http2SubchannelConnector = Http2SubchannelConnector;
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