Remove short write checking:

See the code for bufio.Writer.  Short writes can not be recovered from.
The removed code attempted to recover, but actually went in to a
hard loop.

writer.go

@@ -183,7 +183,10 @@ func (f *Frame) writeFrame(w *bufio.Writer, c *Connection) error {
 	// Write the body
 	if len(f.Body) != 0 { // Foolish to write 0 length data
 		// fmt.Println("WRBDY", f.Body)
-		e := c.writeBody(f)
+		if c.dld.wde && c.dld.dns {
+			_ = c.netconn.SetWriteDeadline(time.Now().Add(c.dld.wdld))
+		}
+		_, e = w.Write(f.Body)
 		if c.checkWriteError(e) != nil {
 			return e
 		}
@@ -214,35 +217,3 @@ func (c *Connection) checkWriteError(e error) error {
 	}
 	return e
 }
-
-func (c *Connection) writeBody(f *Frame) error {
-	// fmt.Printf("WDBG99 body:%v bodystring: %v\n", f.Body, string(f.Body))
-	var n = 0
-	var e error
-	for {
-		if c.dld.wde && c.dld.dns {
-			_ = c.netconn.SetWriteDeadline(time.Now().Add(c.dld.wdld))
-		}
-		n, e = c.wtr.Write(f.Body)
-		if n == len(f.Body) {
-			return e
-		}
-		c.log("SHORT WRITE", n, len(f.Body))
-		if c.dld.wde && c.dld.dns && isErrorTimeout(e) {
-			c.log("invoking write deadline callback 2")
-			c.dld.dlnotify(e, true)
-		}
-		f.Body = f.Body[n:]
-	}
-}
-
-func isErrorTimeout(e error) bool {
-	if e == nil {
-		return false
-	}
-	_, ok := e.(net.Error)
-	if !ok {
-		return false
-	}
-	return true
-}