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proxy-packer.js
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v2.0.4: make prettier

This commit is contained in:
AJ ONeal 2019-09-03 09:21:08 -06:00
parent e699c44480
commit 2b763f8606
6 changed files with 673 additions and 607 deletions
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105
README.md
View File

@ -17,8 +17,7 @@ Browser <--/ \--> Device
It's the kind of thing you'd use to build a poor man's VPN, or port-forward router.
The M-PROXY Protocol
===================
# The M-PROXY Protocol
This is similar to "The PROXY Protocol" (a la HAProxy), but desgined for multiplexed tls, http, tcp, and udp
tunneled over arbitrary streams (such as WebSockets).
@ -60,8 +59,7 @@ service port (string) The listening port, such as 443. Useful for no
host or server name (string) Useful for services that can be routed by name, such as http, https, smtp, and dns.
```
Tunneled TCP SNI Packet
-----------------------
## Tunneled TCP SNI Packet
You should see that the result is simply all of the original packet with a leading header.
@ -91,15 +89,13 @@ Note that `16 03 01 00` starts at the 29th byte (at index 28 or 0x1C) instead of
The v1 header uses strings for address and service descriptor information,
but future versions may be binary.
API
===
# API
```js
var Packer = require('proxy-packer');
```
Unpacker / Parser State Machine
-----------------------
## Unpacker / Parser State Machine
The unpacker creates a state machine.
@ -108,52 +104,52 @@ composing a full message with header and data (unless data length is 0).
The state machine progresses through these states:
* version
* headerLength
* header
* data
- version
- headerLength
- header
- data
At the end of the data event (which may or may not contain a buffer of data)
one of the appropriate handlers will be called.
* control
* connection
* message
* pause
* resume
* end
* error
- control
- connection
- message
- pause
- resume
- end
- error
```js
unpacker = Packer.create(handlers); // Create a state machine for unpacking
unpacker.fns.addData(chunk); // process a chunk of data
handlers.oncontrol = function (tun) { } // for communicating with the proxy
// tun.data is an array
// '[ -1, "[Error] bad hello" ]'
// '[ 0, "[Error] out-of-band error message" ]'
// '[ 1, "hello", 254, [ "add_token", "delete_token" ] ]'
// '[ 1, "add_token" ]'
// '[ 1, "delete_token" ]'
handlers.oncontrol = function(tun) {}; // for communicating with the proxy
// tun.data is an array
// '[ -1, "[Error] bad hello" ]'
// '[ 0, "[Error] out-of-band error message" ]'
// '[ 1, "hello", 254, [ "add_token", "delete_token" ] ]'
// '[ 1, "add_token" ]'
// '[ 1, "delete_token" ]'
handlers.onconnection = function (tun) { } // a client has established a connection
handlers.onconnection = function(tun) {}; // a client has established a connection
handlers.onmessage = function (tun) { } // a client has sent a message
// tun = { family, address, port, data
// , service, serviceport, name };
handlers.onmessage = function(tun) {}; // a client has sent a message
// tun = { family, address, port, data
// , service, serviceport, name };
handlers.onpause = function (tun) { } // proxy requests to pause upload to a client
// tun = { family, address, port };
handlers.onpause = function(tun) {}; // proxy requests to pause upload to a client
// tun = { family, address, port };
handlers.onresume = function (tun) { } // proxy requests to resume upload to a client
// tun = { family, address, port };
handlers.onresume = function(tun) {}; // proxy requests to resume upload to a client
// tun = { family, address, port };
handlers.onend = function (tun) { } // proxy requests to close a client's socket
// tun = { family, address, port };
handlers.onend = function(tun) {}; // proxy requests to close a client's socket
// tun = { family, address, port };
handlers.onerror = function (err) { } // proxy is relaying a client's error
// err = { message, family, address, port };
handlers.onerror = function(err) {}; // proxy is relaying a client's error
// err = { message, family, address, port };
```
<!--
@ -163,18 +159,17 @@ handlers.onconnect = function (tun) { } // a new client has co
-->
Packer & Extras
------
## Packer & Extras
Packs header metadata about connection into a buffer (potentially with original data), ready to send.
```js
var headerAndBody = Packer.pack(tun, data); // Add M-PROXY header to data
// tun = { family, address, port
// , service, serviceport, name }
// tun = { family, address, port
// , service, serviceport, name }
var headerBuf = Packer.packHeader(tun, data); // Same as above, but creates a buffer for header only
// (data can be converted to a buffer or sent as-is)
// (data can be converted to a buffer or sent as-is)
var addr = Packer.socketToAddr(socket); // Probe raw, raw socket for address info
@ -187,20 +182,20 @@ var id = Packer.socketToId(socket); // Turn raw, raw socke
```js
var socket = Packer.Stream.wrapSocket(socketOrStream); // workaround for https://github.com/nodejs/node/issues/8854
// which was just closed recently, but probably still needs
// something more like this (below) to work as intended
// https://github.com/findhit/proxywrap/blob/master/lib/proxywrap.js
// which was just closed recently, but probably still needs
// something more like this (below) to work as intended
// https://github.com/findhit/proxywrap/blob/master/lib/proxywrap.js
```
```js
var myTransform = Packer.Transform.create({
address: {
family: '...'
, address: '...'
, port: '...'
}
family: '...',
address: '...',
port: '...'
},
// hint at the service to be used
, service: 'https'
service: 'https'
});
```
@ -217,6 +212,7 @@ hexdump output.bin
Where `input.json` looks something like this:
`input.json`:
```
{ "version": 1
, "address": {
@ -231,12 +227,12 @@ Where `input.json` looks something like this:
}
```
Raw TCP SNI Packet
------------------
## Raw TCP SNI Packet
and `sni.tcp.bin` is any captured tcp packet, such as this one with a tls hello:
`sni.tcp.bin`:
```
0 1 2 3 4 5 6 7 8 9 A B C D D F
0000000 16 03 01 00 c2 01 00 00 be 03 03 57 e3 76 50 66
@ -255,8 +251,7 @@ and `sni.tcp.bin` is any captured tcp packet, such as this one with a tls hello:
00000c7
```
Tunneled TCP SNI Packet
-----------------------
## Tunneled TCP SNI Packet
You should see that the result is simply all of the original packet with a leading header.

216
index.js
View File

@ -3,36 +3,37 @@
var Packer = module.exports;
var serviceEvents = {
default: 'tunnelData'
, connection: 'tunnelConnection'
, control: 'tunnelControl'
, error: 'tunnelError'
, end: 'tunnelEnd'
, pause: 'tunnelPause'
, resume: 'tunnelResume'
default: 'tunnelData',
connection: 'tunnelConnection',
control: 'tunnelControl',
error: 'tunnelError',
end: 'tunnelEnd',
pause: 'tunnelPause',
resume: 'tunnelResume'
};
var serviceFuncs = {
default: 'onmessage'
, connection: 'onconnection'
, control: 'oncontrol'
, error: 'onerror'
, end: 'onend'
, pause: 'onpause'
, resume: 'onresume'
default: 'onmessage',
connection: 'onconnection',
control: 'oncontrol',
error: 'onerror',
end: 'onend',
pause: 'onpause',
resume: 'onresume'
};
Packer.create = function (opts) {
Packer.create = function(opts) {
var machine;
if (!opts.onMessage && !opts.onmessage) {
machine = new (require('events').EventEmitter)();
machine = new (require('events')).EventEmitter();
} else {
machine = {};
}
machine.onmessage = opts.onmessage || opts.onMessage;
machine.oncontrol = opts.oncontrol || opts.onControl;
machine.onconnection = opts.onconnection || opts.onConnection || function () {};
machine.onconnection =
opts.onconnection || opts.onConnection || function() {};
machine.onerror = opts.onerror || opts.onError;
machine.onend = opts.onend || opts.onEnd;
machine.onpause = opts.onpause || opts.onPause;
@ -44,9 +45,9 @@ Packer.create = function (opts) {
machine.chunkIndex = 0;
machine.buf = null;
machine.bufIndex = 0;
machine.fns.collectData = function (chunk, size) {
machine.fns.collectData = function(chunk, size) {
var chunkLeft = chunk.length - machine.chunkIndex;
var hasLen = (size > 0);
var hasLen = size > 0;
if (!hasLen) {
return Buffer.alloc(0);
@ -67,7 +68,10 @@ Packer.create = function (opts) {
// Read and mark as read however much data we need from the chunk to complete our buffer.
var partLen = size - machine.bufIndex;
var part = chunk.slice(machine.chunkIndex, machine.chunkIndex+partLen);
var part = chunk.slice(
machine.chunkIndex,
machine.chunkIndex + partLen
);
machine.chunkIndex += partLen;
// If we had nothing buffered than the part of the chunk we just read is all we need.
@ -84,11 +88,11 @@ Packer.create = function (opts) {
return buf;
};
machine.fns.version = function (chunk) {
machine.fns.version = function(chunk) {
//console.log('');
//console.log('[version]');
if ((255 - machine._version) !== chunk[machine.chunkIndex]) {
console.error("not v" + machine._version + " (or data is corrupt)");
if (255 - machine._version !== chunk[machine.chunkIndex]) {
console.error('not v' + machine._version + ' (or data is corrupt)');
// no idea how to fix this yet
}
machine.chunkIndex += 1;
@ -96,9 +100,8 @@ Packer.create = function (opts) {
return true;
};
machine.headerLen = 0;
machine.fns.headerLength = function (chunk) {
machine.fns.headerLength = function(chunk) {
//console.log('');
//console.log('[headerLength]');
machine.headerLen = chunk[machine.chunkIndex];
@ -107,7 +110,7 @@ Packer.create = function (opts) {
return true;
};
machine.fns.header = function (chunk) {
machine.fns.header = function(chunk) {
//console.log('');
//console.log('[header]');
var header = machine.fns.collectData(chunk, machine.headerLen);
@ -132,7 +135,7 @@ Packer.create = function (opts) {
return true;
};
machine.fns.data = function (chunk) {
machine.fns.data = function(chunk) {
//console.log('');
//console.log('[data]');
var data;
@ -146,7 +149,6 @@ Packer.create = function (opts) {
}
}
//
// data, end, error
//
@ -154,7 +156,7 @@ Packer.create = function (opts) {
if ('error' === machine.service) {
try {
msg = JSON.parse(data.toString());
} catch(e) {
} catch (e) {
msg.message = 'e:' + JSON.stringify(data);
msg.code = 'E_UNKNOWN_ERR';
}
@ -174,9 +176,15 @@ Packer.create = function (opts) {
//console.log('msn', machine.service);
if (machine.emit) {
machine.emit(serviceEvents[machine.service] || serviceEvents[msg.service] || serviceEvents.default);
machine.emit(
serviceEvents[machine.service] ||
serviceEvents[msg.service] ||
serviceEvents.default
);
} else {
(machine[serviceFuncs[machine.service]] || machine[serviceFuncs[msg.service]] || machine[serviceFuncs.default])(msg);
(machine[serviceFuncs[machine.service]] ||
machine[serviceFuncs[msg.service]] ||
machine[serviceFuncs.default])(msg);
}
return true;
@ -184,7 +192,7 @@ Packer.create = function (opts) {
machine.state = 0;
machine.states = ['version', 'headerLength', 'header', 'data'];
machine.fns.addChunk = function (chunk) {
machine.fns.addChunk = function(chunk) {
//console.log('');
//console.log('[addChunk]');
machine.chunkIndex = 0;
@ -197,7 +205,7 @@ Packer.create = function (opts) {
}
}
if ('data' === machine.states[machine.state] && 0 === machine.bodyLen) {
machine.fns[machine.states[machine.state]](chunk)
machine.fns[machine.states[machine.state]](chunk);
machine.state += 1;
machine.state %= machine.states.length;
}
@ -206,7 +214,7 @@ Packer.create = function (opts) {
return machine;
};
Packer.packHeader = function (meta, data, service, andBody, oldways) {
Packer.packHeader = function(meta, data, service, andBody, oldways) {
if (oldways && !data) {
data = Buffer.from(' ');
}
@ -217,41 +225,57 @@ Packer.packHeader = function (meta, data, service, andBody, oldways) {
data = Buffer.from(' ');
}
if (service && -1 === ['control','connection'].indexOf(service)) {
if (service && -1 === ['control', 'connection'].indexOf(service)) {
//console.log('end?', service);
meta.service = service;
}
var size = data && data.byteLength || 0;
var size = (data && data.byteLength) || 0;
var sizeReserve = andBody ? size : 0;
var version = 1;
var header;
if (service === 'control') {
header = Buffer.from(['', '', '', size, service].join(','));
} else if (service === 'connection') {
header = Buffer.from(
[
meta.family,
meta.address,
meta.port,
size,
'connection',
meta.serviceport || '',
meta.name || '',
meta.service || ''
].join(',')
);
} else {
header = Buffer.from(
[
meta.family,
meta.address,
meta.port,
size,
meta.service || '',
meta.serviceport || '',
meta.name || ''
].join(',')
);
}
else if (service === 'connection') {
header = Buffer.from([
meta.family, meta.address, meta.port, size,
'connection', (meta.serviceport || ''), (meta.name || ''),
(meta.service || '')
].join(','));
}
else {
header = Buffer.from([
meta.family, meta.address, meta.port, size,
(meta.service || ''), (meta.serviceport || ''), (meta.name || '')
].join(','));
}
var metaBuf = Buffer.from([ 255 - version, header.length ]);
var buf = Buffer.alloc(metaBuf.byteLength + header.byteLength + sizeReserve);
var metaBuf = Buffer.from([255 - version, header.length]);
var buf = Buffer.alloc(
metaBuf.byteLength + header.byteLength + sizeReserve
);
metaBuf.copy(buf, 0);
header.copy(buf, 2);
if (sizeReserve) { data.copy(buf, 2 + header.byteLength); }
if (sizeReserve) {
data.copy(buf, 2 + header.byteLength);
}
return buf;
};
Packer.pack = function (meta, data, service) {
Packer.pack = function(meta, data, service) {
return Packer.packHeader(meta, data, service, true, true);
};
@ -259,39 +283,40 @@ function extractSocketProps(socket, propNames) {
var props = {};
if (socket.remotePort) {
propNames.forEach(function (propName) {
propNames.forEach(function(propName) {
props[propName] = socket[propName];
});
} else if (socket._remotePort) {
propNames.forEach(function (propName) {
propNames.forEach(function(propName) {
props[propName] = socket['_' + propName];
});
} else if (socket._handle) {
if (
socket._handle._parent
&& socket._handle._parent.owner
&& socket._handle._parent.owner.stream
&& socket._handle._parent.owner.stream.remotePort
socket._handle._parent &&
socket._handle._parent.owner &&
socket._handle._parent.owner.stream &&
socket._handle._parent.owner.stream.remotePort
) {
propNames.forEach(function (propName) {
propNames.forEach(function(propName) {
props[propName] = socket._handle._parent.owner.stream[propName];
});
} else if (
socket._handle._parentWrap
&& socket._handle._parentWrap.remotePort
socket._handle._parentWrap &&
socket._handle._parentWrap.remotePort
) {
propNames.forEach(function (propName) {
propNames.forEach(function(propName) {
props[propName] = socket._handle._parentWrap[propName];
});
} else if (
socket._handle._parentWrap
&& socket._handle._parentWrap._handle
&& socket._handle._parentWrap._handle.owner
&& socket._handle._parentWrap._handle.owner.stream
&& socket._handle._parentWrap._handle.owner.stream.remotePort
socket._handle._parentWrap &&
socket._handle._parentWrap._handle &&
socket._handle._parentWrap._handle.owner &&
socket._handle._parentWrap._handle.owner.stream &&
socket._handle._parentWrap._handle.owner.stream.remotePort
) {
propNames.forEach(function (propName) {
props[propName] = socket._handle._parentWrap._handle.owner.stream[propName];
propNames.forEach(function(propName) {
props[propName] =
socket._handle._parentWrap._handle.owner.stream[propName];
});
}
}
@ -306,41 +331,46 @@ function extractSocketProp(socket, propName) {
try {
value = value || socket._handle._parentWrap[propName];
value = value || socket._handle._parentWrap._handle.owner.stream[propName];
value =
value || socket._handle._parentWrap._handle.owner.stream[propName];
} catch (e) {}
return value || '';
}
Packer.socketToAddr = function (socket) {
Packer.socketToAddr = function(socket) {
// TODO BUG XXX
// https://github.com/nodejs/node/issues/8854
// tlsSocket.remoteAddress = remoteAddress; // causes core dump
// console.log(tlsSocket.remoteAddress);
var props = extractSocketProps(socket, [ 'remoteFamily', 'remoteAddress', 'remotePort', 'localPort' ]);
var props = extractSocketProps(socket, [
'remoteFamily',
'remoteAddress',
'remotePort',
'localPort'
]);
return {
family: props.remoteFamily
, address: props.remoteAddress
, port: props.remotePort
, serviceport: props.localPort
family: props.remoteFamily,
address: props.remoteAddress,
port: props.remotePort,
serviceport: props.localPort
};
};
Packer.addrToId = function (address) {
Packer.addrToId = function(address) {
return address.family + ',' + address.address + ',' + address.port;
};
Packer.socketToId = function (socket) {
Packer.socketToId = function(socket) {
return Packer.addrToId(Packer.socketToAddr(socket));
};
var addressNames = [
'remoteAddress'
, 'remotePort'
, 'remoteFamily'
, 'localAddress'
, 'localPort'
'remoteAddress',
'remotePort',
'remoteFamily',
'localAddress',
'localPort'
];
/*
var sockFuncs = [
@ -355,9 +385,9 @@ var sockFuncs = [
];
*/
// Unlike Packer.Stream.create this should handle all of the events needed to make everything work.
Packer.wrapSocket = function (socket) {
Packer.wrapSocket = function(socket) {
// node v10.2+ doesn't need a workaround for https://github.com/nodejs/node/issues/8854
addressNames.forEach(function (name) {
addressNames.forEach(function(name) {
Object.defineProperty(socket, name, {
enumerable: false,
configurable: true,
@ -429,7 +459,7 @@ function MyTransform(options) {
}
util.inherits(MyTransform, Transform);
MyTransform.prototype._transform = function (data, encoding, callback) {
MyTransform.prototype._transform = function(data, encoding, callback) {
var address = this.__my_addr;
address.service = address.service || this.__my_service;
@ -441,11 +471,11 @@ MyTransform.prototype._transform = function (data, encoding, callback) {
Packer.Stream = {};
var Dup = {
write: function (chunk, encoding, cb) {
write: function(chunk, encoding, cb) {
//console.log('_write', chunk.byteLength);
this.__my_socket.write(chunk, encoding, cb);
}
, read: function (size) {
},
read: function(size) {
//console.log('_read');
var x = this.__my_socket.read(size);
if (x) {
@ -454,7 +484,7 @@ var Dup = {
}
}
};
Packer.Stream.create = function (socket) {
Packer.Stream.create = function(socket) {
if (!Packer.Stream.warned) {
console.warn('`Stream.create` deprecated, use `wrapSocket` instead');
Packer.Stream.warned = true;
@ -488,7 +518,7 @@ Packer.Stream.create = function (socket) {
};
Packer.Transform = {};
Packer.Transform.create = function (opts) {
Packer.Transform.create = function(opts) {
// Note: service refers to the port that the incoming request was from,
// if known (smtps, smtp, https, http, etc)
// { address: '127.0.0.1', service: 'https' }

2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "proxy-packer",
"version": "2.0.3",
"version": "2.0.4",
"description": "A strategy for packing and unpacking a proxy stream (i.e. packets through a tunnel). Handles multiplexed and tls connections. Used by telebit and telebitd.",
"main": "index.js",
"scripts": {

19
test/input.json
View File

@ -1,10 +1,11 @@
{ "version": 1
, "address": {
"family": "IPv4"
, "address": "127.0.1.1"
, "port": 4321
, "service": "https"
, "serviceport": 443
}
, "filepath": "./sni.hello.bin"
{
"version": 1,
"address": {
"family": "IPv4",
"address": "127.0.1.1",
"port": 4321,
"service": "https",
"serviceport": 443
},
"filepath": "./sni.hello.bin"
}

58
test/pack.js
View File

@ -1,28 +1,31 @@
;(function () {
'use strict';
(function() {
'use strict';
var fs = require('fs');
var infile = process.argv[2];
var outfile = process.argv[3];
var sni = require('sni');
var fs = require('fs');
var infile = process.argv[2];
var outfile = process.argv[3];
var sni = require('sni');
if (!infile || !outfile) {
console.error("Usage:");
console.error("node test/pack.js test/input.json test/output.bin");
if (!infile || !outfile) {
console.error('Usage:');
console.error('node test/pack.js test/input.json test/output.bin');
process.exit(1);
return;
}
}
var path = require('path');
var json = JSON.parse(fs.readFileSync(infile, 'utf8'));
var data = require('fs').readFileSync(path.resolve(path.dirname(infile), json.filepath), null);
var Packer = require('../index.js');
var path = require('path');
var json = JSON.parse(fs.readFileSync(infile, 'utf8'));
var data = require('fs').readFileSync(
path.resolve(path.dirname(infile), json.filepath),
null
);
var Packer = require('../index.js');
var servername = sni(data);
var m = data.toString().match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
var hostname = (m && m[1].toLowerCase() || '').split(':')[0];
var servername = sni(data);
var m = data.toString().match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
var hostname = ((m && m[1].toLowerCase()) || '').split(':')[0];
/*
/*
function pack() {
var version = json.version;
var address = json.address;
@ -37,9 +40,16 @@ function pack() {
}
*/
json.address.name = servername || hostname;
var buf = Packer.pack(json.address, data);
fs.writeFileSync(outfile, buf, null);
console.log("wrote " + buf.byteLength + " bytes to '" + outfile + "' ('hexdump " + outfile + "' to inspect)");
}());
json.address.name = servername || hostname;
var buf = Packer.pack(json.address, data);
fs.writeFileSync(outfile, buf, null);
console.log(
'wrote ' +
buf.byteLength +
" bytes to '" +
outfile +
"' ('hexdump " +
outfile +
"' to inspect)"
);
})();

172
test/parse.js
View File

@ -5,59 +5,91 @@ var hello = require('fs').readFileSync(__dirname + '/sni.hello.bin');
var version = 1;
function getAddress() {
return {
family: 'IPv4'
, address: '127.0.1.1'
, port: 4321
, service: 'foo-https'
, serviceport: 443
, name: 'foo-pokemap.hellabit.com'
family: 'IPv4',
address: '127.0.1.1',
port: 4321,
service: 'foo-https',
serviceport: 443,
name: 'foo-pokemap.hellabit.com'
};
}
var addr = getAddress();
var connectionHeader = addr.family + ',' + addr.address + ',' + addr.port
+ ',0,connection,'
+ (addr.serviceport || '') + ',' + (addr.name || '') + ',' + (addr.service || '')
;
var header = addr.family + ',' + addr.address + ',' + addr.port
+ ',' + hello.byteLength + ',' + (addr.service || '') + ','
+ (addr.serviceport || '') + ',' + (addr.name || '')
;
var endHeader = addr.family + ',' + addr.address + ',' + addr.port
+ ',0,end,'
+ (addr.serviceport || '') + ',' + (addr.name || '')
;
var connectionHeader =
addr.family +
',' +
addr.address +
',' +
addr.port +
',0,connection,' +
(addr.serviceport || '') +
',' +
(addr.name || '') +
',' +
(addr.service || '');
var header =
addr.family +
',' +
addr.address +
',' +
addr.port +
',' +
hello.byteLength +
',' +
(addr.service || '') +
',' +
(addr.serviceport || '') +
',' +
(addr.name || '');
var endHeader =
addr.family +
',' +
addr.address +
',' +
addr.port +
',0,end,' +
(addr.serviceport || '') +
',' +
(addr.name || '');
var buf = Buffer.concat([
Buffer.from([ 255 - version, connectionHeader.length ])
, Buffer.from(connectionHeader)
, Buffer.from([ 255 - version, header.length ])
, Buffer.from(header)
, hello
, Buffer.from([ 255 - version, endHeader.length ])
, Buffer.from(endHeader)
Buffer.from([255 - version, connectionHeader.length]),
Buffer.from(connectionHeader),
Buffer.from([255 - version, header.length]),
Buffer.from(header),
hello,
Buffer.from([255 - version, endHeader.length]),
Buffer.from(endHeader)
]);
var services = { 'ssh': 22, 'http': 4080, 'https': 8443 };
var services = { ssh: 22, http: 4080, https: 8443 };
var clients = {};
var count = 0;
var packer = require('../');
var machine = packer.create({
onconnection: function (tun) {
onconnection: function(tun) {
console.info('');
if (!tun.service || 'connection' === tun.service) {
throw new Error("missing service: " + JSON.stringify(tun));
throw new Error('missing service: ' + JSON.stringify(tun));
}
console.info('[onConnection]');
count += 1;
}
, onmessage: function (tun) {
},
onmessage: function(tun) {
//console.log('onmessage', tun);
var id = tun.family + ',' + tun.address + ',' + tun.port;
var service = 'https';
var port = services[service];
var servername = sni(tun.data);
console.info('[onMessage]', service, port, servername, tun.data.byteLength);
console.info(
'[onMessage]',
service,
port,
servername,
tun.data.byteLength
);
if (!tun.data.equals(hello)) {
throw new Error("'data' packet is not equal to original 'hello' packet");
throw new Error(
"'data' packet is not equal to original 'hello' packet"
);
}
//console.log('all', tun.data.byteLength, 'bytes are equal');
//console.log('src:', tun.family, tun.address + ':' + tun.port + ':' + tun.serviceport);
@ -72,11 +104,11 @@ var machine = packer.create({
}
count += 1;
}
, onerror: function () {
throw new Error("Did not expect onerror");
}
, onend: function () {
},
onerror: function() {
throw new Error('Did not expect onerror');
},
onend: function() {
console.info('[onEnd]');
count += 1;
}
@ -93,16 +125,16 @@ packts.push(packer.packHeader(getAddress(), null, 'end'));
packed = Buffer.concat(packts);
if (!packed.equals(buf)) {
console.error("");
console.error('');
console.error(buf.toString('hex') === packed.toString('hex'));
console.error("");
console.error("auto-packed:");
console.error('');
console.error('auto-packed:');
console.error(packed.toString('hex'), packed.byteLength);
console.error("");
console.error("hand-packed:");
console.error('');
console.error('hand-packed:');
console.error(buf.toString('hex'), buf.byteLength);
console.error("");
throw new Error("packer (new) did not pack as expected");
console.error('');
throw new Error('packer (new) did not pack as expected');
}
packts = [];
@ -126,27 +158,26 @@ packed = Buffer.concat(packts);
// maching a few things on either side.
//
// Only 6 bytes are changed - two 1 => 0, four ' ' => ''
var hex = packed.toString('hex')
var hex = packed
.toString('hex')
//.replace(/2c313939/, '2c30')
.replace(/32312c312c636f/, '32312c302c636f')
.replace(/3332312c312c656e64/, '3332312c302c656e64')
.replace(/7320/, '73')
.replace(/20$/, '')
;
.replace(/20$/, '');
if (hex !== buf.toString('hex')) {
console.error("");
console.error('');
console.error(buf.toString('hex') === hex);
console.error("");
console.error("auto-packed:");
console.error('');
console.error('auto-packed:');
console.error(hex, packed.byteLength);
console.error("");
console.error("hand-packed:");
console.error('');
console.error('hand-packed:');
console.error(buf.toString('hex'), buf.byteLength);
console.error("");
throw new Error("packer (old) did not pack as expected");
console.error('');
throw new Error('packer (old) did not pack as expected');
}
console.info('');
// full message in one go
@ -156,16 +187,14 @@ clients = {};
machine.fns.addChunk(buf);
console.info('');
// messages one byte at a time
console.info('[BYTE-BY-BYTE BUFFER]', 1);
clients = {};
buf.forEach(function (byte) {
machine.fns.addChunk(Buffer.from([ byte ]));
buf.forEach(function(byte) {
machine.fns.addChunk(Buffer.from([byte]));
});
console.info('');
// split messages in overlapping thirds
// 0-2 (2)
// 2-24 (22)
@ -173,25 +202,26 @@ console.info('');
// 223-225 (2)
// 225-247 (22)
// 247-446 (199)
buf = Buffer.concat([ buf, buf ]);
buf = Buffer.concat([buf, buf]);
console.info('[OVERLAPPING BUFFERS]', buf.length);
clients = {};
[ buf.slice(0, 7) // version + header
, buf.slice(7, 14) // header
, buf.slice(14, 21) // header
, buf.slice(21, 28) // header + body
, buf.slice(28, 217) // body
, buf.slice(217, 224) // body + version
, buf.slice(224, 238) // version + header
, buf.slice(238, buf.byteLength) // header + body
].forEach(function (buf) {
[
buf.slice(0, 7), // version + header
buf.slice(7, 14), // header
buf.slice(14, 21), // header
buf.slice(21, 28), // header + body
buf.slice(28, 217), // body
buf.slice(217, 224), // body + version
buf.slice(224, 238), // version + header
buf.slice(238, buf.byteLength) // header + body
].forEach(function(buf) {
machine.fns.addChunk(Buffer.from(buf));
});
console.info('');
process.on('exit', function () {
process.on('exit', function() {
if (count !== 12) {
throw new Error("should have delivered 12 messages, not " + count);
throw new Error('should have delivered 12 messages, not ' + count);
}
console.info('TESTS PASS');
console.info('');