From a532bc12d3b64140c51e34324ee5e2cf71c21a93 Mon Sep 17 00:00:00 2001
From: cassy73 <cassy@zalaszam.hu>
Date: Tue, 3 Jan 2017 11:35:01 +0100
Subject: [PATCH] Correct _write function return

---
 UIPClient.cpp | 9 +++++----
 UIPClient.h   | 2 +-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/UIPClient.cpp b/UIPClient.cpp
index fc24d05..761e7b4 100644
--- a/UIPClient.cpp
+++ b/UIPClient.cpp
@@ -139,10 +139,10 @@ UIPClient::stop()
       _dumpAllData();
     #endif
     }
-#if ACTLOGLEVEL>=LOG_DEBUG
+#if ACTLOGLEVEL>=LOG_DEBUG_V3
   else
     {
-      LogObject.uart_send_strln(F("UIPClient::stop() DEBUG:stop(), data: NULL"));
+      LogObject.uart_send_strln(F("UIPClient::stop() DEBUG_V3:stop(), data: NULL"));
     }
 #endif
   data = NULL;
@@ -194,7 +194,7 @@ UIPClient::write(const uint8_t *buf, size_t size)
   return _write(data, buf, size);
 }
 
-int16_t
+uint16_t
 UIPClient::_write(uip_userdata_t* u, const uint8_t *buf, size_t size)
 {
   #if ACTLOGLEVEL>=LOG_DEBUG_V3
@@ -271,7 +271,8 @@ UIPClient::_write(uip_userdata_t* u, const uint8_t *buf, size_t size)
 #endif
       return size-remain;
     }
-  return -1;
+  //return -1; -1 is wrong because return type is unsigned
+  return 0;
 }
 
 int
diff --git a/UIPClient.h b/UIPClient.h
index cc54e46..7d15d17 100644
--- a/UIPClient.h
+++ b/UIPClient.h
@@ -102,7 +102,7 @@ typedef struct {
   static uip_userdata_t all_data[UIP_CONNS];
   static uip_userdata_t* _allocateData();
 
-  static int16_t _write(uip_userdata_t *,const uint8_t *buf, size_t size);
+  static uint16_t _write(uip_userdata_t *,const uint8_t *buf, size_t size);
   static int _available(uip_userdata_t *);
 
   static uint8_t _currentBlock(memhandle* blocks);