Implemented filter for ws + fixes

* proper 0xhex
* filters fixed
* start of filter manager
* accounts for ws. Closes #246

websocket/client.go

@@ -51,7 +51,13 @@ func (c *Client) Conn() *ws.Conn {
 }
 
 func (c *Client) Write(data interface{}, id int) {
-	msg := &Message{Id: id, Data: data}
+	c.write(&Message{Id: id, Data: data})
+}
+func (c *Client) Event(data interface{}, ev string, id int) {
+	c.write(&Message{Id: id, Data: data, Event: ev})
+}
+
+func (c *Client) write(msg *Message) {
 	select {
 	case c.ch <- msg:
 	default:

websocket/message.go

@@ -3,10 +3,11 @@ package websocket
 import "github.com/ethereum/go-ethereum/ethutil"
 
 type Message struct {
-	Call string        `json:"call"`
-	Args []interface{} `json:"args"`
-	Id   int           `json:"_id"`
-	Data interface{}   `json:"data"`
+	Call  string        `json:"call"`
+	Args  []interface{} `json:"args"`
+	Id    int           `json:"_id"`
+	Data  interface{}   `json:"data"`
+	Event string        `json:"_event"`
 }
 
 func (self *Message) Arguments() *ethutil.Value {