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

@@ -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;

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;