Increase maxIdleConnection limit in etcd client.

third_party/forked/coreos/go-etcd/etcd/client.go

@@ -0,0 +1,32 @@
+package etcd
+
+import (
+	"errors"
+	"net"
+	"time"
+)
+
+// dial attempts to open a TCP connection to the provided address, explicitly
+// enabling keep-alives with a one-second interval.
+func Dial(network, addr string) (net.Conn, error) {
+	conn, err := net.DialTimeout(network, addr, time.Second)
+	if err != nil {
+		return nil, err
+	}
+
+	tcpConn, ok := conn.(*net.TCPConn)
+	if !ok {
+		return nil, errors.New("Failed type-assertion of net.Conn as *net.TCPConn")
+	}
+
+	// Keep TCP alive to check whether or not the remote machine is down
+	if err = tcpConn.SetKeepAlive(true); err != nil {
+		return nil, err
+	}
+
+	if err = tcpConn.SetKeepAlivePeriod(time.Second); err != nil {
+		return nil, err
+	}
+
+	return tcpConn, nil
+}