From c0550aac8c93e81828a8cc10ac2e4ee5e0f83e16 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Wed, 7 Jan 2009 21:16:45 +0000
Subject: Originating each outgoing network connection from a different source
 port (in the Client class of the Ethernet library). Updating readme and todo.

---
 libraries/Ethernet/Client.cpp | 6 +++++-
 libraries/Ethernet/Client.h   | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/libraries/Ethernet/Client.cpp b/libraries/Ethernet/Client.cpp
index 9d3e0df..6c19b8f 100644
--- a/libraries/Ethernet/Client.cpp
+++ b/libraries/Ethernet/Client.cpp
@@ -8,6 +8,8 @@ extern "C" {
 #include "Client.h"
 #include "Server.h"
 
+uint16_t Client::_srcport = 0;
+
 Client::Client(uint8_t sock) {
   _sock = sock;
 }
@@ -29,8 +31,10 @@ uint8_t Client::connect() {
   if (_sock == 255)
     return 0;
     
+  _srcport++;
+    
   // XXX: what port should we connect from?
-  socket(_sock, Sn_MR_TCP, _port, 0);
+  socket(_sock, Sn_MR_TCP, _port, 1024 + _srcport);
   
   if (!::connect(_sock, _ip, _port))
     return 0;
diff --git a/libraries/Ethernet/Client.h b/libraries/Ethernet/Client.h
index 5911b95..f269e9b 100644
--- a/libraries/Ethernet/Client.h
+++ b/libraries/Ethernet/Client.h
@@ -5,6 +5,7 @@
 
 class Client : public Print {
 private:
+  static uint16_t _srcport;
   uint8_t _sock;
   uint8_t *_ip;
   uint16_t _port;
-- 
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