public bool NegotiateConnection(string xmlrpc_uri)
{
int protos = 0;
XmlRpcValue tcpros_array = new XmlRpcValue(), protos_array = new XmlRpcValue(), Params = new XmlRpcValue();
tcpros_array.Set(0, "TCPROS");
protos_array.Set(protos++, tcpros_array);
Params.Set(0, this_node.Name);
Params.Set(1, name);
Params.Set(2, protos_array);
string peer_host = "";
int peer_port = 0;
if (!network.splitURI(xmlrpc_uri, ref peer_host, ref peer_port))
{
EDB.WriteLine("Bad xml-rpc URI: [" + xmlrpc_uri + "]");
return(false);
}
XmlRpcClient c = new XmlRpcClient(peer_host, peer_port);
if (!c.IsConnected || !c.ExecuteNonBlock("requestTopic", Params))
{
EDB.WriteLine("Failed to contact publisher [" + peer_host + ":" + peer_port + "] for topic [" + name +
"]");
c.Dispose();
return(false);
}
#if DEBUG
EDB.WriteLine("Began asynchronous xmlrpc connection to http://" + peer_host + ":" + peer_port + "/ for topic [" + name +
"]");
#endif
PendingConnection conn = new PendingConnection(c, this, xmlrpc_uri, Params);
lock (pending_connections_mutex)
{
pending_connections.Add(conn);
}
XmlRpcManager.Instance.addAsyncConnection(conn);
return(true);
}
public void pendingConnectionDone(PendingConnection conn, IntPtr res)
{
XmlRpcValue result = XmlRpcValue.LookUp(res);
lock (shutdown_mutex)
{
if (shutting_down || _dropped)
{
return;
}
}
XmlRpcValue proto = new XmlRpcValue();
if (!XmlRpcManager.Instance.validateXmlrpcResponse("requestTopic", result, ref proto))
{
conn.failures++;
EDB.WriteLine("Negotiating for " + conn.parent.name + " has failed " + conn.failures + " times");
return;
}
lock (pending_connections_mutex)
{
pending_connections.Remove(conn);
}
string peer_host = conn.client.Host;
int peer_port = conn.client.Port;
string xmlrpc_uri = "http://" + peer_host + ":" + peer_port + "/";
if (proto.Size == 0)
{
#if DEBUG
EDB.WriteLine("Couldn't agree on any common protocols with [" + xmlrpc_uri + "] for topic [" + name +
"]");
#endif
return;
}
if (proto.Type != TypeEnum.TypeArray)
{
EDB.WriteLine("Available protocol info returned from " + xmlrpc_uri + " is not a list.");
return;
}
string proto_name = proto[0].Get <string>();
if (proto_name == "UDPROS")
{
EDB.WriteLine("OWNED! Only tcpros is supported right now.");
}
else if (proto_name == "TCPROS")
{
if (proto.Size != 3 || proto[1].Type != TypeEnum.TypeString || proto[2].Type != TypeEnum.TypeInt)
{
EDB.WriteLine("publisher implements TCPROS... BADLY! parameters aren't string,int");
return;
}
string pub_host = proto[1].Get <string>();
int pub_port = proto[2].Get <int>();
#if DEBUG
EDB.WriteLine("Connecting via tcpros to topic [" + name + "] at host [" + pub_host + ":" + pub_port +
"]");
#endif
TcpTransport transport = new TcpTransport(PollManager.Instance.poll_set)
{
_topic = name
};
if (transport.connect(pub_host, pub_port))
{
Connection connection = new Connection();
TransportPublisherLink pub_link = new TransportPublisherLink(this, xmlrpc_uri);
connection.initialize(transport, false, null);
pub_link.initialize(connection);
ConnectionManager.Instance.addConnection(connection);
lock (publisher_links_mutex)
{
addPublisherLink(pub_link);
}
#if DEBUG
EDB.WriteLine("Connected to publisher of topic [" + name + "] at [" + pub_host + ":" + pub_port +
"]");
#endif
}
else
{
EDB.WriteLine("Failed to connect to publisher of topic [" + name + "] at [" + pub_host + ":" +
pub_port + "]");
}
}
else
{
EDB.WriteLine("Your xmlrpc server be talking jibber jabber, foo");
}
}