From 733530a8509e7511df49ece1cc0a4700138f650d Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Fri, 23 Jun 2017 15:26:44 +0200
Subject: Increase EDI expected MTU to 1400

Configurable would be better though
---
 src/dabOutput/edi/PFT.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/dabOutput/edi/PFT.cpp b/src/dabOutput/edi/PFT.cpp
index 4bce1f1..1c885f9 100644
--- a/src/dabOutput/edi/PFT.cpp
+++ b/src/dabOutput/edi/PFT.cpp
@@ -172,7 +172,9 @@ vector< vector<uint8_t> > PFT::ProtectAndFragment(AFPacket af_packet)
     }
     else { // No RS, only fragmentation
         // TS 102 821 7.2.2: s_max = MTU - h
-        const size_t max_payload_size = 1000; // TODO define properly
+        // Ethernet MTU is 1500, but maybe you are routing over a network which
+        // has some sort of packet encapsulation. Add some margin.
+        const size_t max_payload_size = 1400;
 
         // Calculate fragment count and size
         // TS 102 821 7.2.2: ceil((l + c*p + z) / s_max)
-- 
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