From ee33bd248f19945d83d1b84db65d97030739eb3e Mon Sep 17 00:00:00 2001
From: Revertron <105154+Revertron@users.noreply.github.com>
Date: Tue, 1 Nov 2022 13:10:50 +0100
Subject: [PATCH] Added two new methods to `mobile` package (#974)

* Added two new methods

In order to implement https://github.com/yggdrasil-network/yggdrasil-android/issues/25 we need these new methods.

* Renamed methods, changed comments
---
 contrib/mobile/mobile.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/contrib/mobile/mobile.go b/contrib/mobile/mobile.go
index 78a3f506..9b146492 100644
--- a/contrib/mobile/mobile.go
+++ b/contrib/mobile/mobile.go
@@ -115,6 +115,18 @@ func (m *Yggdrasil) Send(p []byte) error {
 	return nil
 }
 
+// Send sends a packet from given buffer to Yggdrasil. From first byte up to length.
+func (m *Yggdrasil) SendBuffer(p []byte, length int) error {
+	if m.iprwc == nil {
+		return nil
+	}
+	if len(p) < length {
+		return nil
+	}
+	_, _ = m.iprwc.Write(p[:length])
+	return nil
+}
+
 // Recv waits for and reads a packet coming from Yggdrasil. It
 // will be a fully formed IPv6 packet
 func (m *Yggdrasil) Recv() ([]byte, error) {
@@ -126,6 +138,15 @@ func (m *Yggdrasil) Recv() ([]byte, error) {
 	return buf[:n], nil
 }
 
+// Recv waits for and reads a packet coming from Yggdrasil to given buffer, returning size of packet 
+func (m *Yggdrasil) RecvBuffer(buf []byte) (int, error) {
+	if m.iprwc == nil {
+		return 0, nil
+	}
+	n, _ := m.iprwc.Read(buf)
+	return n, nil
+}
+
 // Stop the mobile Yggdrasil instance
 func (m *Yggdrasil) Stop() error {
 	logger := log.New(m.log, "", 0)