Skip to content
This repository has been archived by the owner on Apr 22, 2023. It is now read-only.

Commit

Permalink
Sockets should never be attached to a ClientRequest before nextTick().
Browse files Browse the repository at this point in the history 
This way the API for interacting directly with the socket object is
consistent before and after the Agent pool is exhausted.

Fixes #1601.
  • Loading branch information
@mikeal @ry
mikeal authored and ry committed Aug 29, 2011
1 parent 1a0edbc commit 7c87e09
Showing 1 changed file with 127 additions and 127 deletions.
254 changes: 127 additions & 127 deletions lib/http2.js
View file
Expand Up @@ -1070,148 +1070,148 @@ ClientRequest.prototype.abort = function() {
};

ClientRequest.prototype.onSocket = function(socket) {
var parser = parsers.alloc();
var req = this;

req.socket = socket;
req.connection = socket;
parser.reinitialize('response');
parser.socket = socket;
parser.incoming = null;
req.parser = parser;

socket._httpMessage = req;
// Setup "drain" propogation.
httpSocketSetup(socket);

var errorListener = function(err) {
debug('HTTP SOCKET ERROR: ' + err.message + '\n' + err.stack);
req.emit('error', err);
// For Safety. Some additional errors might fire later on
// and we need to make sure we don't double-fire the error event.
req._hadError = true;
parser.finish();
socket.destroy();
}
socket.on('error', errorListener);

socket.ondata = function(d, start, end) {
var ret = parser.execute(d, start, end - start);
if (ret instanceof Error) {
debug('parse error');
socket.destroy(ret);
} else if (parser.incoming && parser.incoming.upgrade) {
var bytesParsed = ret;
socket.ondata = null;
socket.onend = null;

var res = parser.incoming;
req.res = res;

// This is start + byteParsed
var upgradeHead = d.slice(start + bytesParsed, end);
if (req.listeners('upgrade').length) {
// Emit 'upgrade' on the Agent.
req.upgraded = true;
req.emit('upgrade', res, socket, upgradeHead);
socket.emit('agentRemove');
} else {
// Got upgrade header, but have no handler.
socket.destroy();
}
}
};

socket.onend = function() {
if (!req.res) {
// If we don't have a response then we know that the socket
// ended prematurely and we need to emit an error on the request.
req.emit('error', new Error("Request ended prematurely."));
process.nextTick(function () {
var parser = parsers.alloc();
req.socket = socket;
req.connection = socket;
parser.reinitialize('response');
parser.socket = socket;
parser.incoming = null;
req.parser = parser;

socket._httpMessage = req;
// Setup "drain" propogation.
httpSocketSetup(socket);

var errorListener = function(err) {
debug('HTTP SOCKET ERROR: ' + err.message + '\n' + err.stack);
req.emit('error', err);
// For Safety. Some additional errors might fire later on
// and we need to make sure we don't double-fire the error event.
req._hadError = true;
parser.finish();
socket.destroy();
}
parser.finish();
parsers.free(parser); // I don't know if this is necessary --Mikeal
socket.destroy();
};
socket.on('error', errorListener);

socket.ondata = function(d, start, end) {
var ret = parser.execute(d, start, end - start);
if (ret instanceof Error) {
debug('parse error');
socket.destroy(ret);
} else if (parser.incoming && parser.incoming.upgrade) {
var bytesParsed = ret;
socket.ondata = null;
socket.onend = null;

var res = parser.incoming;
req.res = res;

// This is start + byteParsed
var upgradeHead = d.slice(start + bytesParsed, end);
if (req.listeners('upgrade').length) {
// Emit 'upgrade' on the Agent.
req.upgraded = true;
req.emit('upgrade', res, socket, upgradeHead);
socket.emit('agentRemove');
} else {
// Got upgrade header, but have no handler.
socket.destroy();
}
}
};

socket.onend = function() {
if (!req.res) {
// If we don't have a response then we know that the socket
// ended prematurely and we need to emit an error on the request.
req.emit('error', new Error("Request ended prematurely."));
req._hadError = true;
}
parser.finish();
parsers.free(parser); // I don't know if this is necessary --Mikeal
socket.destroy();
};

var closeListener = function() {
debug('HTTP socket close');
req.emit('close');
if (req.res && req.res.readable) {
// Socket closed before we emitted "end" below.
req.res.emit('aborted');
req.res.emit('end');
req.res.emit('close');
} else if (!req.res && !req._hadError) {
// This socket error fired before we started to
// receive a response. The error needs to
// fire on the request.
req.emit('error', new Error('socket hang up'));
var closeListener = function() {
debug('HTTP socket close');
req.emit('close');
if (req.res && req.res.readable) {
// Socket closed before we emitted "end" below.
req.res.emit('aborted');
req.res.emit('end');
req.res.emit('close');
} else if (!req.res && !req._hadError) {
// This socket error fired before we started to
// receive a response. The error needs to
// fire on the request.
req.emit('error', new Error('socket hang up'));
}
}
}
socket.on('close', closeListener);
socket.on('close', closeListener);

parser.onIncoming = function(res, shouldKeepAlive) {
debug('AGENT incoming response!');
parser.onIncoming = function(res, shouldKeepAlive) {
debug('AGENT incoming response!');

if (req.res) {
// We already have a response object, this means the server
// sent a double response.
socket.destroy();
return;
}
req.res = res;

// Responses to HEAD requests are crazy.
// HEAD responses aren't allowed to have an entity-body
// but *can* have a content-length which actually corresponds
// to the content-length of the entity-body had the request
// been a GET.
var isHeadResponse = req.method == 'HEAD';
debug('AGENT isHeadResponse ' + isHeadResponse);

if (res.statusCode == 100) {
// restart the parser, as this is a continue message.
delete req.res; // Clear res so that we don't hit double-responses.
req.emit('continue');
return true;
}
if (req.res) {
// We already have a response object, this means the server
// sent a double response.
socket.destroy();
return;
}
req.res = res;

if (req.shouldKeepAlive && res.headers.connection !== 'keep-alive' && !req.upgraded) {
// Server MUST respond with Connection:keep-alive for us to enable it.
// If we've been upgraded (via WebSockets) we also shouldn't try to
// keep the connection open.
req.shouldKeepAlive = false;
}
// Responses to HEAD requests are crazy.
// HEAD responses aren't allowed to have an entity-body
// but *can* have a content-length which actually corresponds
// to the content-length of the entity-body had the request
// been a GET.
var isHeadResponse = req.method == 'HEAD';
debug('AGENT isHeadResponse ' + isHeadResponse);

if (res.statusCode == 100) {
// restart the parser, as this is a continue message.
delete req.res; // Clear res so that we don't hit double-responses.
req.emit('continue');
return true;
}

res.addListener('end', function() {
if (!req.shouldKeepAlive) {
if (socket.writable) {
debug('AGENT socket.destroySoon()');
socket.destroySoon();
}
assert(!socket.writable);
} else {
debug('AGENT socket keep-alive');
if (req.shouldKeepAlive && res.headers.connection !== 'keep-alive' && !req.upgraded) {
// Server MUST respond with Connection:keep-alive for us to enable it.
// If we've been upgraded (via WebSockets) we also shouldn't try to
// keep the connection open.
req.shouldKeepAlive = false;
}
});

DTRACE_HTTP_CLIENT_RESPONSE(socket, req);
req.emit('response', res);
res.addListener('end', function() {
if (!req.shouldKeepAlive) {
if (socket.writable) {
debug('AGENT socket.destroySoon()');
socket.destroySoon();
}
assert(!socket.writable);
} else {
debug('AGENT socket keep-alive');
}
});

DTRACE_HTTP_CLIENT_RESPONSE(socket, req);
req.emit('response', res);

res.on('end', function() {
if (req.shouldKeepAlive) {
socket.removeListener('close', closeListener);
socket.removeListener('error', errorListener);
socket.emit('free');
}
});
res.on('end', function() {
if (req.shouldKeepAlive) {
socket.removeListener('close', closeListener);
socket.removeListener('error', errorListener);
socket.emit('free');
}
});

return isHeadResponse;
};
process.nextTick(function() {
return isHeadResponse;
};
req.emit('socket', socket);
});

};
ClientRequest.prototype._deferToConnect = function(method, arguments, cb) {
// This function is for calls that need to happen once the socket is
Expand Down

0 comments on commit 7c87e09

Please sign in to comment.