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[flashproxy/master] Add an RTMFPSocket class.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 9a85e5b90a37c8c989cda04f69862b82f25ca924 Author: David Fifield <david(a)bamsoftware.com> Date: Sat Jun 11 21:26:55 2011 -0700 Add an RTMFPSocket class. --- RTMFPSocket.as | 209 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 209 insertions(+), 0 deletions(-) diff --git a/RTMFPSocket.as b/RTMFPSocket.as new file mode 100644 index 0000000..e23c4fd --- /dev/null +++ b/RTMFPSocket.as @@ -0,0 +1,209 @@ +/* +The RTMFPSocket class provides a socket-like interface around RTMFP +NetConnection and NetStream. Each RTMFPSocket contains one NetConnection and two +NetStreams, one for reading and one for writing. + +To create a listening socket: + var rs:RTMFPSocket = new RTMFPSocket(url, key); + rs.addEventListener(Event.COMPLETE, function (e:Event):void { + // rs.id is set and can be sent out of band to the client. + }); + rs.addEventListener(RTMFPSocket.ACCEPT_EVENT, function (e:Event):void { + // rs.peer_id is the ID of the connected client. + }); + rs.listen(); +To connect to a listening socket: + // Receive peer_id out of band. + var rs:RTMFPSocket = new RTMFPSocket(url, key); + rs.addEventListener(Event.CONNECT, function (e:Event):void { + // rs.id and rs.peer_id are now set. + }); +*/ + +package +{ + import flash.events.Event; + import flash.events.EventDispatcher; + import flash.events.IOErrorEvent; + import flash.events.NetStatusEvent; + import flash.events.ProgressEvent; + import flash.net.NetConnection; + import flash.net.NetStream; + import flash.utils.ByteArray; + + public class RTMFPSocket extends EventDispatcher + { + public static const ACCEPT_EVENT:String = "accept"; + + public var connected:Boolean; + + private var nc:NetConnection; + private var incoming:NetStream; + private var outgoing:NetStream; + + /* Cache to hold the peer ID between when connect is called and the + NetConnection exists. */ + private var connect_peer_id:String; + + private var buffer:ByteArray; + + private var cirrus_url:String; + private var cirrus_key:String; + + public function RTMFPSocket(cirrus_url:String, cirrus_key:String) + { + connected = false; + + buffer = new ByteArray(); + + this.cirrus_url = cirrus_url; + this.cirrus_key = cirrus_key; + + nc = new NetConnection(); + } + + public function get id():String + { + return nc.nearID; + } + + public function get peer_id():String + { + return incoming.farID; + } + + /* NetStatusEvents that aren't handled more specifically in + listen_netstatus_event or connect_netstatus_event. */ + private function generic_netstatus_event(e:NetStatusEvent):void + { + switch (e.info.code) { + case "NetConnection.Connect.Closed": + dispatchEvent(new Event(Event.CLOSE)); + break; + case "NetStream.Connect.Closed": + connected = false; + close(); + break; + default: + var event:IOErrorEvent = new IOErrorEvent(IOErrorEvent.IO_ERROR); + event.text = e.info.code; + dispatchEvent(event); + break; + } + } + + private function listen_netstatus_event(e:NetStatusEvent):void + { + switch (e.info.code) { + case "NetConnection.Connect.Success": + outgoing = new NetStream(nc, NetStream.DIRECT_CONNECTIONS); + outgoing.client = { + onPeerConnect: listen_onpeerconnect + }; + outgoing.publish("server"); + + /* listen is complete, ready to accept. */ + dispatchEvent(new Event(Event.COMPLETE)); + break; + case "NetStream.Connect.Success": + break; + default: + return generic_netstatus_event(e); + break; + } + } + + private function listen_onpeerconnect(peer:NetStream):Boolean { + incoming = new NetStream(nc, peer.farID); + incoming.client = { + r: receive_data + }; + incoming.play("client"); + + connected = true; + dispatchEvent(new Event(ACCEPT_EVENT)); + + return true; + } + + private function connect_netstatus_event(e:NetStatusEvent):void + { + switch (e.info.code) { + case "NetConnection.Connect.Success": + outgoing = new NetStream(nc, NetStream.DIRECT_CONNECTIONS); + outgoing.publish("client"); + + incoming = new NetStream(nc, connect_peer_id); + incoming.client = { + r: receive_data + }; + incoming.play("server"); + break; + case "NetStream.Connect.Success": + connected = true; + dispatchEvent(new Event(Event.CONNECT)); + break; + default: + return generic_netstatus_event(e); + break; + } + } + + /* Function called back when the other side does a send. */ + private function receive_data(bytes:ByteArray):void { + var event:ProgressEvent; + + event = new ProgressEvent(ProgressEvent.SOCKET_DATA); + event.bytesLoaded = bytes.bytesAvailable; + + bytes.readBytes(buffer, buffer.length, bytes.bytesAvailable); + if (bytes.bytesAvailable == 0) { + /* Reclaim memory space. */ + bytes.position = 0; + bytes.length = 0; + } + + dispatchEvent(event); + } + + public function listen():void + { + nc.addEventListener(NetStatusEvent.NET_STATUS, listen_netstatus_event); + nc.connect(cirrus_url, cirrus_key); + } + + public function connect(peer_id:String):void + { + /* Store for later reading by connect_netstatus_event. */ + this.connect_peer_id = peer_id; + + nc.addEventListener(NetStatusEvent.NET_STATUS, connect_netstatus_event); + nc.connect(cirrus_url, cirrus_key); + } + + public function close():void + { + outgoing.close(); + incoming.close(); + nc.close(); + } + + public function readBytes(output:ByteArray, offset:uint = 0, length:uint = 0):void + { + buffer.readBytes(output, offset, length); + } + + public function writeBytes(input:ByteArray, offset:uint = 0, length:uint = 0):void + { + var sendbuf:ByteArray; + + /* Read into a new buffer, in case offset and length do not + completely span input. */ + sendbuf = new ByteArray(); + sendbuf.writeBytes(input, offset, length); + + /* Use a short method name because it's sent over the wire. */ + outgoing.send("r", sendbuf); + } + } +}

1 0

[flashproxy/master] Restore labels on ProxyPair output.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit ca61c5d4125c4991468a36ef8cf6e9fb23d820f2 Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:00:56 2011 -0700 Restore labels on ProxyPair output. Allow setting the label from the outside. --- ProxyPair.as | 13 +++++++++---- swfcat.as | 11 +++++++++-- 2 files changed, 18 insertions(+), 6 deletions(-) diff --git a/ProxyPair.as b/ProxyPair.as index ca9f092..62c6ec2 100644 --- a/ProxyPair.as +++ b/ProxyPair.as @@ -14,6 +14,9 @@ package /* An instance of a client-relay connection. */ public class ProxyPair extends EventDispatcher { + // Label for log messages. + public var name:String; + // Socket to client. private var s_c:*; private var connect_c:Function; @@ -33,13 +36,15 @@ package public function log(msg:String):void { - ui.puts(id() + ": " + msg) + if (name) + ui.puts(name + ": " + msg) + else + ui.puts(msg) } - // String describing this pair for output. - public function id():String + public function set_name(name:String):void { - return "<>"; + this.name = name; } public function ProxyPair(ui:swfcat, s_c:*, connect_c:Function, s_r:*, connect_r:Function) diff --git a/swfcat.as b/swfcat.as index 6125187..d9e9bc6 100644 --- a/swfcat.as +++ b/swfcat.as @@ -265,6 +265,7 @@ package private function make_proxy_pair(client_spec:String, relay_spec:String):ProxyPair { + var proxy_pair:ProxyPair; var addr_c:Object; var addr_r:Object; var s_c:*; @@ -278,21 +279,27 @@ package if (addr_c) { s_c = new Socket(); s_r = new Socket(); - return new ProxyPair(this, s_c, function ():void { + proxy_pair = new ProxyPair(this, s_c, function ():void { s_c.connect(addr_c.host, addr_c.port); }, s_r, function ():void { s_r.connect(addr_r.host, addr_r.port); }); + proxy_pair.set_name("<" + addr_c.host + ":" + addr_c.port + "," + + addr_r.host + ":" + addr_r.port + ">"); + return proxy_pair; } if (client_spec.match(/^[0-9A-Fa-f]{64}$/)) { s_c = new RTMFPSocket(CIRRUS_URL, CIRRUS_KEY); s_r = new Socket(); - return new ProxyPair(this, s_c, function ():void { + proxy_pair = new ProxyPair(this, s_c, function ():void { s_c.connect(client_spec); }, s_r, function ():void { s_r.connect(addr_r.host, addr_r.port); }); + proxy_pair.set_name("<" + client_spec.substr(0, 4) + "...," + + addr_r.host + ":" + addr_r.port + ">"); + return proxy_pair; } throw new ArgumentError("Can't parse client spec \"" + client_spec + "\".");

1 0

[flashproxy/master] Remove unused code.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 53aecf9837f1dd95d005aaea8a116907488927ea Author: David Fifield <david(a)bamsoftware.com> Date: Sat Jun 11 22:19:30 2011 -0700 Remove unused code. --- FacilitatorSocket.as | 100 ------------------ RTMFPProxyPair.as | 101 ------------------ TCPProxyPair.as | 77 -------------- events/FacilitatorSocketEvent.as | 24 ----- rtmfp/CirrusSocket.as | 142 -------------------------- rtmfp/RTMFPSocket.as | 202 ------------------------------------- rtmfp/RTMFPSocketClient.as | 46 --------- rtmfp/events/CirrusSocketEvent.as | 22 ---- rtmfp/events/RTMFPSocketEvent.as | 25 ----- 9 files changed, 0 insertions(+), 739 deletions(-) diff --git a/FacilitatorSocket.as b/FacilitatorSocket.as deleted file mode 100644 index 70325c1..0000000 --- a/FacilitatorSocket.as +++ /dev/null @@ -1,100 +0,0 @@ -package -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.HTTPStatusEvent; - import flash.events.IOErrorEvent; - import flash.events.SecurityErrorEvent; - import flash.net.URLLoader; - import flash.net.URLLoaderDataFormat; - import flash.net.URLRequest; - import flash.net.URLRequestMethod; - import flash.net.URLVariables; - - import events.FacilitatorSocketEvent; - - [Event(name=FacilitatorSocketEvent.CONNECT_FAILED, type="com.flashproxy.rtmfp.events.FacilitatorSocketEvent")] - [Event(name=FacilitatorSocketEvent.REGISTRATION_FAILED, type="com.flashproxy.rtmfp.events.FacilitatorSocketEvent")] - [Event(name=FacilitatorSocketEvent.REGISTRATION_RECEIVED, type="com.flashproxy.rtmfp.events.FacilitatorSocketEvent")] - [Event(name=FacilitatorSocketEvent.REGISTRATIONS_EMPTY, type="com.flashproxy.rtmfp.events.FacilitatorSocketEvent")] - public class FacilitatorSocket extends EventDispatcher - { - private var host:String; - private var port:uint; - - public function FacilitatorSocket(host:String, port:uint) - { - this.host = host; - this.port = port; - } - - public function get_registration():void - { - make_request(URLRequestMethod.GET); - } - - public function post_registration(registration_data:String):void - { - var data:URLVariables = new URLVariables(); - data.client = registration_data; - make_request(URLRequestMethod.POST, data); - } - - private function fail():void - { - dispatchEvent(new FacilitatorSocketEvent(FacilitatorSocketEvent.CONNECT_FAILED)); - } - - private function make_request(method:String, data:URLVariables = null):void - { - var request:URLRequest; - var loader:URLLoader; - - loader = new URLLoader(); - /* Get the x-www-form-encoded-values. */ - loader.dataFormat = URLLoaderDataFormat.VARIABLES; - loader.addEventListener(Event.COMPLETE, on_complete_event); - loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, on_security_error_event); - loader.addEventListener(IOErrorEvent.IO_ERROR, on_io_error_event); - - request = new URLRequest(url); - request.data = data; - request.method = method; - loader.load(request); - } - - private function on_complete_event(event:Event):void - { - try { - var client_id:String = event.target.data.client; - var relay_addr:String = event.target.data.relay; - if (client_id == "") { - dispatchEvent(new FacilitatorSocketEvent(FacilitatorSocketEvent.REGISTRATIONS_EMPTY)); - } else { - dispatchEvent(new FacilitatorSocketEvent(FacilitatorSocketEvent.REGISTRATION_RECEIVED, client_id, relay_addr)); - } - } catch (e:Error) { - /* error is thrown for POST when we don't care about - the response anyways */ - } - - event.target.close() - } - - private function on_io_error_event(event:IOErrorEvent):void - { - fail(); - } - - private function on_security_error_event(event:SecurityErrorEvent):void - { - fail(); - } - - private function get url():String - { - return "http://" + encodeURIComponent(host) - + ":" + encodeURIComponent(port.toString()) + "/"; - } - } -} diff --git a/RTMFPProxyPair.as b/RTMFPProxyPair.as deleted file mode 100644 index 346d63c..0000000 --- a/RTMFPProxyPair.as +++ /dev/null @@ -1,101 +0,0 @@ -package -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.ProgressEvent; - import flash.net.Socket; - import flash.utils.ByteArray; - - import rtmfp.CirrusSocket; - import rtmfp.RTMFPSocket; - import rtmfp.events.RTMFPSocketEvent; - - public class RTMFPProxyPair extends ProxyPair - { - private var cirrus_socket:CirrusSocket; - private var client_socket:RTMFPSocket; - private var listen_stream:String; - - public function RTMFPProxyPair(ui:swfcat, cirrus_socket:CirrusSocket, listen_stream:String) - { - super(this, ui); - - log("Starting RTMFP proxy pair on stream " + listen_stream); - - this.cirrus_socket = cirrus_socket; - this.listen_stream = listen_stream; - - setup_client_socket(); - } - - override public function set client(client_addr:Object):void - { - this.client_addr = client_addr; - log("Client: connecting to " + client_addr.peer + " on stream " + client_addr.stream + "."); - client_socket.connect(client_addr.peer, client_addr.stream); - } - - override public function close():void - { - super.close(); - if (client_socket != null && client_socket.connected) { - client_socket.close(); - } - dispatchEvent(new Event(Event.CLOSE)); - } - - override public function get connected():Boolean - { - return (super.connected && client_socket != null && client_socket.connected); - } - - override protected function transfer_bytes(src:Object, dst:Object, num_bytes:uint):void - { - var bytes:ByteArray = new ByteArray(); - - if (src == null) { - src = client_socket; - RTMFPSocket(src).readBytes(bytes, 0, num_bytes); - log("RTMFPProxyPair: read " + num_bytes + " bytes from client, writing to relay."); - Socket(dst).writeBytes(bytes); - } - - if (dst == null) { - dst = client_socket; - Socket(src).readBytes(bytes, 0, num_bytes); - log("RTMFPProxyPair: read " + num_bytes + " bytes from relay, writing to client."); - RTMFPSocket(dst).writeBytes(bytes); - } - } - - private function setup_client_socket():void - { - client_socket = new RTMFPSocket(cirrus_socket); - client_socket.addEventListener(RTMFPSocketEvent.CONNECT_FAILED, function (e:RTMFPSocketEvent):void { - log("Client: connection failed to " + client_addr.peer + " on stream " + client_addr.stream + "."); - }); - client_socket.addEventListener(RTMFPSocketEvent.CONNECT_SUCCESS, function (e:RTMFPSocketEvent):void { - log("Client: connected to " + client_addr.peer + " on stream " + client_addr.stream + "."); - if (connected) { - dispatchEvent(new Event(Event.CONNECT)); - } - }); - client_socket.addEventListener(RTMFPSocketEvent.PEER_CONNECTED, function (e:RTMFPSocketEvent):void { - log("Peer connected."); - }); - client_socket.addEventListener(RTMFPSocketEvent.PEER_DISCONNECTED, function (e:RTMFPSocketEvent):void { - log("Client: disconnected from " + client_addr.peer + "."); - close(); - }); - client_socket.addEventListener(RTMFPSocketEvent.PLAY_STARTED, function (e:RTMFPSocketEvent):void { - log("Play started."); - }); - client_socket.addEventListener(RTMFPSocketEvent.PUBLISH_STARTED, function (e:RTMFPSocketEvent):void { - log("Publishing started."); - }); - client_socket.addEventListener(ProgressEvent.SOCKET_DATA, client_to_relay); - - client_socket.listen(listen_stream); - } - } -} \ No newline at end of file diff --git a/TCPProxyPair.as b/TCPProxyPair.as deleted file mode 100644 index de18dd6..0000000 --- a/TCPProxyPair.as +++ /dev/null @@ -1,77 +0,0 @@ -package -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.IOErrorEvent; - import flash.events.ProgressEvent; - import flash.events.SecurityErrorEvent; - import flash.net.Socket; - import flash.utils.ByteArray; - - public class TCPProxyPair extends ProxyPair - { - private var client_socket:Socket; - - public function TCPProxyPair(ui:swfcat) - { - super(this, ui); - - log("Starting TCP proxy pair"); - setup_client_socket(); - } - - override public function set client(client_addr:Object):void - { - this.client_addr = client_addr; - log("Client: connecting to " + client_addr.host + ":" + client_addr.port + "."); - client_socket.connect(client_addr.host, client_addr.port); - } - - override public function close():void - { - super.close(); - if (client_socket != null && client_socket.connected) { - client_socket.close(); - } - dispatchEvent(new Event(Event.CLOSE)); - } - - override public function get connected():Boolean - { - return (super.connected && client_socket != null && client_socket.connected); - } - - override protected function transfer_bytes(src:Object, dst:Object, num_bytes:uint):void - { - var bytes:ByteArray = new ByteArray(); - - if (src == null) { - src = client_socket; - } - - if (dst == null) { - dst = client_socket; - } - - Socket(src).readBytes(bytes, 0, num_bytes); - log("TCPProxyPair: transferring " + num_bytes + " bytes."); - Socket(dst).writeBytes(bytes); - } - - private function setup_client_socket():void - { - client_socket = new Socket(); - - client_socket.addEventListener(Event.CONNECT, function (e:Event):void { - log("Client: connected to " + client_addr.host + ":" + client_addr.port + "."); - if (connected) { - dispatchEvent(new Event(Event.CONNECT)); - } - }); - client_socket.addEventListener(Event.CLOSE, socket_error("Client: closed")); - client_socket.addEventListener(IOErrorEvent.IO_ERROR, socket_error("Client: I/O error")); - client_socket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, socket_error("Client: security error")) - client_socket.addEventListener(ProgressEvent.SOCKET_DATA, client_to_relay); - } - } -} diff --git a/events/FacilitatorSocketEvent.as b/events/FacilitatorSocketEvent.as deleted file mode 100644 index 5787309..0000000 --- a/events/FacilitatorSocketEvent.as +++ /dev/null @@ -1,24 +0,0 @@ -package events -{ - import flash.events.Event; - - public class FacilitatorSocketEvent extends Event - { - public static const CONNECT_CLOSED:String = "connectClosed"; - public static const CONNECT_FAILED:String = "connectFailed"; - public static const CONNECT_SUCCESS:String = "connectSuccess"; - public static const REGISTRATION_RECEIVED:String = "registrationReceived"; - public static const REGISTRATION_FAILED:String = "registrationFailed"; - public static const REGISTRATIONS_EMPTY:String = "registrationsEmpty"; - - public var client:String; - public var relay:String; - - public function FacilitatorSocketEvent(type:String, client:String = null, relay:String = null, bubbles:Boolean = false, cancelable:Boolean = false) - { - super(type, bubbles, cancelable); - this.client = client; - this.relay = relay; - } - } -} diff --git a/rtmfp/CirrusSocket.as b/rtmfp/CirrusSocket.as deleted file mode 100644 index 071ac0d..0000000 --- a/rtmfp/CirrusSocket.as +++ /dev/null @@ -1,142 +0,0 @@ -/* CirrusSocket abstraction - * ------------------------ - * Manages the NetConnection portion of RTMFP and also handles - * the handshake between two Flash players to decide what their - * data stream names will be. - * - * TODO: consider using farNonce/nearNonce instead of sending bytes? - */ - -package rtmfp -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.IOErrorEvent; - import flash.events.NetStatusEvent; - import flash.events.ProgressEvent; - import flash.events.SecurityErrorEvent; - import flash.net.NetConnection; - import flash.utils.clearInterval; - import flash.utils.setInterval; - - import rtmfp.RTMFPSocket; - import rtmfp.events.CirrusSocketEvent; - import rtmfp.events.RTMFPSocketEvent; - - [Event(name=CirrusSocketEvent.CONNECT_CLOSED, type="com.flashproxy.rtmfp.events.CirrusSocketEvent")] - [Event(name=CirrusSocketEvent.CONNECT_FAILED, type="com.flashproxy.rtmfp.events.CirrusSocketEvent")] - [Event(name=CirrusSocketEvent.CONNECT_SUCCESS, type="com.flashproxy.rtmfp.events.CirrusSocketEvent")] - [Event(name=CirrusSocketEvent.HELLO_RECEIVED, type="com.flashproxy.rtmfp.events.CirrusSocketEvent")] - public class CirrusSocket extends EventDispatcher - { - private static const CONNECT_TIMEOUT:uint = 4000; // in milliseconds - - /* We'll append a unique number to the DATA_STREAM_PREFIX for each - new stream we create so that we have unique streams per player. */ - private static const DATA_STREAM_PREFIX:String = "DATA"; - private var data_stream_suffix:uint = 0; - - /* Connection to the Cirrus rendezvous service */ - public var connection:NetConnection; - - /* Timeouts */ - private var connect_timeout:int; - private var hello_timeout:int; - - public function CirrusSocket() - { - connection = new NetConnection(); - connection.addEventListener(NetStatusEvent.NET_STATUS, on_net_status_event); - connection.addEventListener(IOErrorEvent.IO_ERROR, on_io_error_event); - connection.addEventListener(SecurityErrorEvent.SECURITY_ERROR, on_security_error_event); - - /* Set up a client object to handle the hello callback */ - var client:Object = new Object(); - client.onRelay = on_hello; - connection.client = client; - } - - public function connect(addr:String, key:String):void - { - if (!this.connected) { - connect_timeout = setInterval(fail, CONNECT_TIMEOUT); - connection.connect(addr, key); - } else { - throw new Error("Cannot connect Cirrus socket: already connected."); - } - } - - public function close():void - { - if (this.connected) { - connection.close(); - } else { - throw new Error("Cannot close Cirrus socket: not connected."); - } - } - - public function get connected():Boolean - { - return (connection != null && connection.connected); - } - - public function get id():String - { - if (this.connected) { - return connection.nearID; - } - - return null; - } - - public function get local_stream_name():String - { - return DATA_STREAM_PREFIX + data_stream_suffix; - } - - /* Sends a hello message to the Flash player with Cirrus ID "id" - We use this new call protocol outlined here: - http://forums.adobe.com/thread/780788?tstart=0 */ - public function send_hello(id:String):void - { - if (this.connected) { - connection.call("relay", null, id, local_stream_name); - } else { - throw new Error("Cannot send hello: Cirrus socket not connected."); - } - } - -/*************************** PRIVATE HELPER FUNCTIONS *************************/ - - private function fail():void - { - clearInterval(connect_timeout); - dispatchEvent(new CirrusSocketEvent(CirrusSocketEvent.CONNECT_FAILED)); - } - - private function on_hello(peer:String, ...args):void - { - var stream:String = args[0]; - dispatchEvent(new CirrusSocketEvent(CirrusSocketEvent.HELLO_RECEIVED, peer, stream)); - data_stream_suffix++; - } - - private function on_io_error_event(event:IOErrorEvent):void - { - fail(); - } - - private function on_net_status_event(event:NetStatusEvent):void - { - if (event.info.code == "NetConnection.Connect.Success") { - clearInterval(connect_timeout); - dispatchEvent(new CirrusSocketEvent(CirrusSocketEvent.CONNECT_SUCCESS)); - } - } - - private function on_security_error_event(event:SecurityErrorEvent):void - { - fail(); - } - } -} diff --git a/rtmfp/RTMFPSocket.as b/rtmfp/RTMFPSocket.as deleted file mode 100644 index 4efe702..0000000 --- a/rtmfp/RTMFPSocket.as +++ /dev/null @@ -1,202 +0,0 @@ -package rtmfp -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.IOErrorEvent; - import flash.events.NetStatusEvent; - import flash.events.ProgressEvent; - import flash.events.SecurityErrorEvent; - import flash.net.NetConnection; - import flash.net.NetStream; - import flash.utils.ByteArray; - import flash.utils.clearTimeout; - import flash.utils.setTimeout; - - import rtmfp.CirrusSocket; - import rtmfp.RTMFPSocketClient; - import rtmfp.events.CirrusSocketEvent; - import rtmfp.events.RTMFPSocketEvent; - - [Event(name=RTMFPSocketEvent.CONNECT_FAILED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.CONNECT_CLOSED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.CONNECT_SUCCESS, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.PEER_CONNECTED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.PEER_DISCONNECTED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.PLAY_STARTED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.PUBLISH_STARTED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - [Event(name=RTMFPSocketEvent.PUBLISH_FAILED, type="com.flashproxy.rtmfp.events.RTMFPSocketEvent")] - public class RTMFPSocket extends EventDispatcher - { - private const CONNECT_TIMEOUT:uint = 10000; - - private var s_c:CirrusSocket; - - private var recv_stream:NetStream; - private var send_stream:NetStream; - - private var peer_stream:NetStream; - - private var connect_timeout:int; - - public function RTMFPSocket(s_c:CirrusSocket) - { - this.s_c = s_c; - recv_stream = null; - send_stream = null; - connect_timeout = 0; - } - - /* Tears down this RTMFPSocket, closing both its streams. - To be used when destroying this object. */ - public function close():void - { - if (send_stream != null) { - s_c.connection.removeEventListener(NetStatusEvent.NET_STATUS, on_stream_disconnection_event); - send_stream.close(); - } - - if (recv_stream != null) { - recv_stream.close(); - } - } - - /* In RTMFP, you connect to a remote socket by requesting to - "play" the data being published on a named stream by the - host identified by id. The connection request goes through - the Cirrus server which handles the mapping from id/stream - to IP/port and any necessary NAT traversal. */ - public function connect(id:String, stream:String):void - { - recv_stream = new NetStream(s_c.connection, id); - var client:RTMFPSocketClient = new RTMFPSocketClient(); - client.addEventListener(ProgressEvent.SOCKET_DATA, on_data_available, false, 0, true); - client.addEventListener(RTMFPSocketClient.CONNECT_ACKNOWLEDGED, on_connect_acknowledged, false, 0, true); - recv_stream.client = client; - recv_stream.addEventListener(NetStatusEvent.NET_STATUS, on_recv_stream_event); - recv_stream.play(stream); - connect_timeout = setTimeout(on_connect_timeout, CONNECT_TIMEOUT, recv_stream); - } - - public function get connected():Boolean - { - return (recv_stream != null && recv_stream.client != null && - RTMFPSocketClient(recv_stream.client).connect_acknowledged); - } - - /* In RTMFP, you open a listening socket by publishing a named - stream that others can connect to instead of listening on a port. - You register this stream with the Cirrus server via the Cirrus - socket so that it can redirect connection requests for an id/stream - tuple to this socket. */ - public function listen(stream:String):void - { - // apparently streams don't get disconnection events, only the NetConnection - // object does...bleh. - s_c.connection.addEventListener(NetStatusEvent.NET_STATUS, on_stream_disconnection_event); - - send_stream = new NetStream(s_c.connection, NetStream.DIRECT_CONNECTIONS); - send_stream.addEventListener(NetStatusEvent.NET_STATUS, on_send_stream_event); - var client:Object = new Object(); - client.onPeerConnect = on_peer_connect; - send_stream.client = client; - send_stream.publish(stream); - } - - public function get peer():String - { - if (!connected) return null; - return recv_stream.farID; - } - - public function get peer_connected():Boolean - { - return send_stream.peerStreams.length > 0; - } - - public function readBytes(bytes:ByteArray, offset:uint = 0, length:uint = 0):void - { - if (recv_stream != null && recv_stream.client != null) { - recv_stream.client.bytes.readBytes(bytes, offset, length); - } - } - - public function writeBytes(bytes:ByteArray):void - { - if (send_stream != null && peer_connected) { - send_stream.send(RTMFPSocketClient.DATA_AVAILABLE, bytes); - } - } - - /* Listens for acknowledgement of a connection attempt to a - remote peer. */ - private function on_connect_acknowledged(event:Event):void - { - clearTimeout(connect_timeout); - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.CONNECT_SUCCESS, recv_stream)); - } - - /* If we don't get a connection acknowledgement by the time this - timeout function is called, we punt. */ - private function on_connect_timeout(peer:NetStream):void - { - if (!this.connected) { - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.CONNECT_FAILED, recv_stream)); - } - } - - private function on_data_available(event:ProgressEvent):void - { - dispatchEvent(event); - } - - private function on_recv_stream_event(event:NetStatusEvent):void - { - /* empty, here for symmetry */ - } - - /* This function gets called whenever someone tries to connect - to this socket's send_stream tuple. We don't want multiple - peers connecting at once, so we disallow that. The socket - acknowledges the connection back to the peer with the - SET_CONNECTION_ACKNOWLEDGED message. */ - private function on_peer_connect(peer:NetStream):Boolean - { - if (peer_connected) { - return false; - } - - peer_stream = peer; - peer.send(RTMFPSocketClient.SET_CONNECT_ACKNOWLEDGED); - - // need to do this in a timeout so that this function can - // return true to finalize the connection before firing the event - setTimeout(function (stream:NetStream):void { - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.PEER_CONNECTED, stream)); - }, 0, peer); - - return true; - } - - private function on_send_stream_event(event:NetStatusEvent):void - { - switch (event.info.code) { - case "NetStream.Publish.Start": - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.PUBLISH_STARTED)); - break; - case "NetStream.Publish.BadName": - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.PUBLISH_FAILED)); - break; - default: - break; - } - } - - private function on_stream_disconnection_event(event:NetStatusEvent):void - { - if (event.info.code == "NetStream.Connect.Closed" && event.info.stream === peer_stream) { - dispatchEvent(new RTMFPSocketEvent(RTMFPSocketEvent.PEER_DISCONNECTED)); - } - } - } -} - diff --git a/rtmfp/RTMFPSocketClient.as b/rtmfp/RTMFPSocketClient.as deleted file mode 100644 index b917bcb..0000000 --- a/rtmfp/RTMFPSocketClient.as +++ /dev/null @@ -1,46 +0,0 @@ -package rtmfp -{ - import flash.events.Event; - import flash.events.EventDispatcher; - import flash.events.ProgressEvent; - import flash.utils.ByteArray; - - [Event(name=RTMFPSocketClient.CONNECT_ACKNOWLEDGED, type="flash.events.Event")] - public dynamic class RTMFPSocketClient extends EventDispatcher { - public static const DATA_AVAILABLE:String = "data_available"; - public static const CONNECT_ACKNOWLEDGED:String = "connectAcknowledged"; - public static const SET_CONNECT_ACKNOWLEDGED:String = "set_connect_acknowledged"; - - private var _bytes:ByteArray; - private var _connect_acknowledged:Boolean; - - public function RTMFPSocketClient() - { - super(); - _bytes = new ByteArray(); - _connect_acknowledged = false; - } - - public function get bytes():ByteArray - { - return _bytes; - } - - public function data_available(bytes:ByteArray):void - { - bytes.readBytes(_bytes, _bytes.length, 0); - dispatchEvent(new ProgressEvent(ProgressEvent.SOCKET_DATA, false, false, _bytes.bytesAvailable, _bytes.bytesAvailable)); - } - - public function get connect_acknowledged():Boolean - { - return _connect_acknowledged; - } - - public function set_connect_acknowledged():void - { - _connect_acknowledged = true; - dispatchEvent(new Event(CONNECT_ACKNOWLEDGED)); - } - } -} diff --git a/rtmfp/events/CirrusSocketEvent.as b/rtmfp/events/CirrusSocketEvent.as deleted file mode 100644 index 831ad73..0000000 --- a/rtmfp/events/CirrusSocketEvent.as +++ /dev/null @@ -1,22 +0,0 @@ -package rtmfp.events -{ - import flash.events.Event; - - public class CirrusSocketEvent extends Event - { - public static const CONNECT_CLOSED:String = "connectClosed"; - public static const CONNECT_FAILED:String = "connectFailed"; - public static const CONNECT_SUCCESS:String = "connectSuccess"; - public static const HELLO_RECEIVED:String = "helloReceived"; - - public var peer:String; - public var stream:String; - - public function CirrusSocketEvent(type:String, peer:String = null, stream:String = null, bubbles:Boolean = false, cancelable:Boolean = false) - { - super(type, bubbles, cancelable); - this.peer = peer; - this.stream = stream; - } - } -} diff --git a/rtmfp/events/RTMFPSocketEvent.as b/rtmfp/events/RTMFPSocketEvent.as deleted file mode 100644 index 87a7e09..0000000 --- a/rtmfp/events/RTMFPSocketEvent.as +++ /dev/null @@ -1,25 +0,0 @@ -package rtmfp.events -{ - import flash.events.Event; - import flash.net.NetStream; - - public class RTMFPSocketEvent extends Event - { - public static const CONNECT_FAILED:String = "connectFailed"; - public static const CONNECT_SUCCESS:String = "connectSuccess"; - public static const CONNECT_CLOSED:String = "connectClosed" - public static const PEER_CONNECTED:String = "peerConnected"; - public static const PEER_DISCONNECTED:String = "peerDisconnected"; - public static const PLAY_STARTED:String = "playStarted"; - public static const PUBLISH_STARTED:String = "publishStarted"; - public static const PUBLISH_FAILED:String = "publishFailed"; - - public var stream:NetStream; - - public function RTMFPSocketEvent(type:String, stream:NetStream = null, bubbles:Boolean = false, cancelable:Boolean = false) - { - super(type, bubbles, cancelable); - this.stream = stream; - } - } -}

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[flashproxy/master] Minor cleanup.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 5e8eca1361083409847d4e6c94e5d84adf8d2673 Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:08:49 2011 -0700 Minor cleanup. --- swfcat.as | 12 ++++-------- 1 files changed, 4 insertions(+), 8 deletions(-) diff --git a/swfcat.as b/swfcat.as index d9e9bc6..1d99ad4 100644 --- a/swfcat.as +++ b/swfcat.as @@ -29,8 +29,8 @@ package port: 9002 }; - /* Default Tor client to use in case of RTMFP connection */ - private const DEFAULT_TOR_CLIENT_ADDR:Object = { + /* Local Tor client to use in case of RTMFP connection. */ + private const LOCAL_TOR_CLIENT_ADDR:Object = { host: "127.0.0.1", port: 9002 }; @@ -45,8 +45,6 @@ package // Seconds. private const RATE_LIMIT_HISTORY:Number = 5.0; - private var proxy_mode:Boolean; - /* TextField for debug output. */ private var output_text:TextField; @@ -103,15 +101,13 @@ package else addChild(badge); - proxy_mode = (this.loaderInfo.parameters["proxy"] != null); - fac_addr = get_param_addr("facilitator", DEFAULT_FACILITATOR_ADDR); if (!fac_addr) { puts("Error: Facilitator spec must be in the form \"host:port\"."); return; } - if (proxy_mode) + if (this.loaderInfo.parameter["proxy"]) proxy_main(); else client_main(); @@ -228,7 +224,7 @@ package proxy_pair = new ProxyPair(this, rs, function ():void { /* Do nothing; already connected. */ }, s_t, function ():void { - s_t.connect(DEFAULT_TOR_CLIENT_ADDR.host, DEFAULT_TOR_CLIENT_ADDR.port); + s_t.connect(LOCAL_TOR_CLIENT_ADDR.host, LOCAL_TOR_CLIENT_ADDR.port); }); proxy_pair.connect(); }

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[flashproxy/master] Merge branch 'rtmfp'
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit d7f92def28704245e08033964cc8f98c55d3b568 Merge: c9df471 f6e2fb7 Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:44:33 2011 -0700 Merge branch 'rtmfp' Conflicts: ProxyPair.as swfcat.as Makefile | 2 +- ProxyPair.as | 72 ++++++++++--------- README | 77 +++++++++++++-------- RTMFPSocket.as | 209 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ design.txt | 19 ++++-- swfcat.as | 154 +++++++++++++++++++++++++++++++++++------ 6 files changed, 441 insertions(+), 92 deletions(-)

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[flashproxy/master] Update documentation for combined TCP/RTMFP proxy.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit f6e2fb73a707c34760326fa760406a38f7144c35 Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:40:11 2011 -0700 Update documentation for combined TCP/RTMFP proxy. --- README | 73 +++++++++++++++++++++++++++++++++++++----------------------- design.txt | 19 +++++++++++---- 2 files changed, 59 insertions(+), 33 deletions(-) diff --git a/README b/README index ff12174..4b6a2dc 100644 --- a/README +++ b/README @@ -16,6 +16,10 @@ There are five main parts. Our terminology for each part is in quotes. 5. A Tor "relay," which is just a normal Tor relay except that its host must also serve a Flash crossdomain policy. +A proxy is capable of connecting to a client in two ways: Using a normal +TCP connection, or over Adobe RTMFP, which involves a third party but is +capable of traversing NAT. + == Demonstration page https://crypto.stanford.edu/flashproxy/ @@ -28,42 +32,56 @@ Download the (free software) Flex SDK. http://opensource.adobe.com/wiki/display/flexsdk/Flex+SDK Put its bin directory in your PATH. The important executable is mxmlc. -You need a Cirrus developer key from Adobe. Put it in the environment -variable CIRRUS_KEY so it can be found by Makefile. +For RTMFP support, you need a Cirrus developer key from Adobe. Put it in +the environment variable CIRRUS_KEY so it can be found by Makefile. $ export CIRRUS_KEY=XXXXXXXXXXXXXXXXXXXXXXXX-YYYYYYYYYYYY To build, run $ make Copy the resulting swfcat.swf file to a web server. -On the computer that will be the facilitator, run +=== Connecting + +On the Tor relay, run sudo ./crossdomaind.py - ./facilitator.py -crossdomaind.py needs to be run on any server that will accept -connections from a Flash proxy. It serves a chunk of data on port 843. +In general, any computer that a proxy connects to needs to serve a +crossdomain policy, but the connector and facilitator have it built in. + +On the facilitator, run + ./facilitator.py -r <relay-ip> The facilitator runs on port 9002 by default. +In a browser somewhere, open swfcat.swf and pass it a parameters telling it +which facilitator to use, for example + http://www.example.com/swfcat.swf?facilitator=<facilitator-ip>:9002&debug=1 + +There are two ways in which the client can receive connections: over TCP +or RTMFP. TCP doesn't send traffic to anyone other than the facilitator +and the proxy, but it only works if you have a public IP address. RTMFP +coordinates connections using a server controlled by Adobe, but works +when the client is behind a NAT. + +To connect with TCP, run + ./connector.py -f <facilitator-ip> +(If you are running the facilitator locally, be sure to use an external +IP address, not 127.0.0.1.) The connector informs the facilitator that +it wants a connection, then listens on 0.0.0.0:9000 and 127.0.0.1:9001. +The proxy will connect on port 9000 and the local Tor will connect on +9001. + +To connect with RTMFP, run + ./connector.py 127.0.0.1:9001 127.0.0.1:9002 +and open in a browser + http://www.example.com/swfcat.swf?client=1&facilitator=<facilitator-ip>:9002 +In this case, it is swfcat running in client mode that registers with +the facilitator. The connector acts to join the local swfcat and the +local Tor client. + The client needs to be running a version of Tor that supports the Socks4Proxy configuration. This means version 0.2.2.1-alpha or later--not the current stable release. -On the client, run - ./connector.py 127.0.0.1:9001 127.0.0.1:9002 -Also on the client, open up the browser to swfcat.swf. Passing no -arguments should give you good defaults (expects the facilitator running -on Nate's server). swfcat will connect to the Cirrus server to -obtain a client ID which it then registers with the facilitator. - -In a browser somewhere, open swfcat.swf and pass parameters telling it -which facilitator to use and to operate in proxy mode. - http://www.example.com/swfcat.swf?proxy=true&facilitator=<FACILITATOR_IP>:9002&debug=1 -This swfcat will also connect to the Cirrus server to obtain a client ID, -and then it will ping the facilitator to check if there are any registered -client IDs. If there is one, it will open a RTMFP connection (coordinated -by the Cirrus server) to the client and an additional connection to a -Tor relay. - -Back on the client, start Tor with the following configuration: +Start Tor with the following configuration: UseBridges 1 Bridge 127.0.0.1:9001 Socks4Proxy 127.0.0.1:9001 @@ -73,8 +91,8 @@ If you see messages like [notice] no known bridge descriptors running yet; stalling try deleting the files in ~/.tor or /var/lib/tor. -You will be able to see byte counts flowing in both browsers displaying -swfcat.swf (client and proxy), and eventually be able to build a circuit. +You will be able to see byte counts flowing in the browser window, and +eventually be able to build a circuit. == Rationale @@ -92,16 +110,15 @@ policy. Clients register with the facilitator by sending an HTTP message: POST / HTTP/1.0\r\n \r\n - client=<CIRRUS-CLIENT-ID> + client=<ip-addr/rtmfp-id> The Flash proxy also gets a client address over HTTP: GET / HTTP/1.0\r\n \r\n The server sends back address specifications of a client and a relay in an HTTP respose. HTTP/1.0 200 OK\r\n - Server: BaseHTTP/0.3 Python/2.5.2\r\n \r\n - client=<CIRRUS-CLIENT-ID>&relay=9.9.9.9:9001 + client=<ip-addr/rtmfp-id>&relay=<relay-ip> == ActionScript programming diff --git a/design.txt b/design.txt index 27be8ab..2d5ad2b 100644 --- a/design.txt +++ b/design.txt @@ -101,13 +101,19 @@ Design of Flash proxies On startup, the connector sends a registration message to the facilitator, informing the facilitator that it is waiting for a connection. The facilitator will later hand this registration to a - Flash proxy. The registration message is an HTTP POST request of this + Flash proxy. The registration message is an HTTP POST request of the form: POST / HTTP/1.0 client=[<address>]:<port> + or the form: + + POST / HTTP/1.0 + + client=[<rtmfp-id>]:<port> + The facilitator sends a 200 reply if the registration was successful and an error status otherwise. If the connector omits the [<address>] part, the facilitator will automatically fill it in based on the HTTP @@ -141,11 +147,14 @@ Design of Flash proxies client=[<address>:<port>]&relay=<address>:<port> - If <address>:<port> is missing, it means that there are no client - registrations for this proxy. + or this: + + client=[<rtmfp-id>]&relay=<address>:<port> + + If the value for the client parameter is empty, it means that there are no + client registrations for this proxy. - The Flash proxy may serve more than one relay–client pair at once. It - limits its own bandwidth to 10 KB/s (combined upload/download). + The Flash proxy may serve more than one relay–client pair at once. 8. Behavior of the facilitator

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[flashproxy/master] Make proxy mode the default in swfcat.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit f0e063240a4c3d673256d82f42fbecd4e35ba1e5 Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:21:59 2011 -0700 Make proxy mode the default in swfcat. In other words, use client=true instead of nothing for client mode, and nothing instead of proxy=true for proxy mode. This makes it a drop-in replacement for master swfcat. --- swfcat.as | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/swfcat.as b/swfcat.as index 1d99ad4..27752e9 100644 --- a/swfcat.as +++ b/swfcat.as @@ -107,10 +107,10 @@ package return; } - if (this.loaderInfo.parameter["proxy"]) - proxy_main(); - else + if (this.loaderInfo.parameters["client"]) client_main(); + else + proxy_main(); } /* Get an address structure from the given movie parameter, or the given

1 0

[flashproxy/master] Show the debug window output always in client mode.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 67ac951f4b75983d1329edab7ab781f0caafd28c Author: David Fifield <david(a)bamsoftware.com> Date: Sun Jun 12 01:24:53 2011 -0700 Show the debug window output always in client mode. --- swfcat.as | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/swfcat.as b/swfcat.as index 27752e9..9739419 100644 --- a/swfcat.as +++ b/swfcat.as @@ -96,7 +96,7 @@ package puts("Parameters loaded."); - if (this.loaderInfo.parameters["debug"]) + if (this.loaderInfo.parameters["debug"] || this.loaderInfo.parameters["client"]) addChild(output_text); else addChild(badge);

1 0

[flashproxy/master] Put ++ where I meant --
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 99dd0d5b7ac7530d5fb524b75635bcb56f6c2a00 Author: Nate Hardison <nate(a)rescomp-09-154551.stanford.edu> Date: Thu Jun 2 20:21:50 2011 -0700 Put ++ where I meant -- --- rtmfpcat.as | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/rtmfpcat.as b/rtmfpcat.as index 37701e8..1876ef9 100644 --- a/rtmfpcat.as +++ b/rtmfpcat.as @@ -223,7 +223,7 @@ package puts("ProxyPair: connection closed."); p_p = null; if (proxy_mode && !debug_mode && badge != null) { - badge.num_proxy_pairs++; + badge.num_proxy_pairs--; } establish_facilitator_connection(); });

1 0

[flashproxy/master] Re-remove badge_con_counter.png.
by dcf＠torproject.org 12 Jun '11

12 Jun '11

commit 84024e7f6efd44e202cc7b7d7dd60a0baf1deb92 Author: David Fifield <david(a)bamsoftware.com> Date: Fri Jun 3 08:22:33 2011 -0700 Re-remove badge_con_counter.png. --- badge_con_counter.png | Bin 270 -> 0 bytes return_of_the_rtmfpcat.as | 2 +- 2 files changed, 1 insertions(+), 1 deletions(-) diff --git a/badge_con_counter.png b/badge_con_counter.png deleted file mode 100644 index d832e24..0000000 Binary files a/badge_con_counter.png and /dev/null differ diff --git a/return_of_the_rtmfpcat.as b/return_of_the_rtmfpcat.as index e512408..7095c09 100644 --- a/return_of_the_rtmfpcat.as +++ b/return_of_the_rtmfpcat.as @@ -100,7 +100,7 @@ package private var fac_poll_timeo_id:uint; /* Badge with a client counter */ - [Embed(source="badge_con_counter.png")] + [Embed(source="badge.png")] private var BadgeImage:Class; private var tot_client_count_tf:TextField; private var tot_client_count_fmt:TextFormat;

1 0