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[z.facultad/75.74/practicos.git] / practicas / pipi / src / ipout.cpp

diff --git a/practicas/pipi/src/ipout.cpp b/practicas/pipi/src/ipout.cpp
index 3e8dadc899ae045a388d5f2d1f48c5ec522df62c..9c6d705dab25a7272ae9e702e18e9a9be3bdb439 100644 (file)
--- a/practicas/pipi/src/ipout.cpp
+++ b/practicas/pipi/src/ipout.cpp
@@ -7,6 +7,9 @@
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/msg.h>
+#ifdef DEBUG
+#include <iostream>
+#endif
 
 /// Constructor
 IPOut::IPOut(const IPAddr& ip, RouteTable& rtable, Dev& forward_que, std::ostream& log):
@@ -16,12 +19,14 @@ IPOut::IPOut(const IPAddr& ip, RouteTable& rtable, Dev& forward_que, std::ostrea
 
 void IPOut::drop(const std::string& msg, const std::string& buf)
 {
-    log << "IPOut::drop: " << msg << "\n\tBuffer: " << buf << "\n";
+    log << "IPOut::drop (" << ip << "): " << msg << "\n\tBuffer: " << buf
+            << "\n";
 }
 
 void IPOut::drop(const std::string& msg, const IPHeader& iph)
 {
-    log << "IPOut::drop: " << msg << "\n\tIPHeader: " << iph << "\n";
+    log << "IPOut::drop (" << ip << "): " << msg << "\n\tIPHeader: " << iph
+            << "\n";
 }
 
 /// Envía un paquete IP
@@ -35,7 +40,7 @@ bool IPOut::send(const std::string& data, uint8_t proto, IPAddr dst, IPAddr src,
         std::string buf = forward_que.receive();
         IPHeader iph(buf);
 #ifdef DEBUG
-        log << "IPOut::send: A forwardear\n";
+        std::cout << "IPOut::send (" << ip << "): A forwardear\n";
 #endif
         send(iph, buf.substr(iph.header_len()));
     }
@@ -57,12 +62,14 @@ bool IPOut::send(IPHeader iph, std::string data) throw (std::runtime_error)
     RouteTable::Route* r = rtable.get(iph.dst);
     if (!r)
     {
-        drop("No existe una ruta para el destino", iph);
+        // ICMP
+        drop("No existe una ruta para el destino -> ICMP", iph);
         return false;
     }
     // No quieren fragmentar
     if (iph.df && (IPHeader::header_len() + data.size() > r->iface->mtu))
     {
+        // Silencioso
         drop("Tamaño de paquete más grande que MTU y DF=1", iph);
         return false;
     }
@@ -82,9 +89,10 @@ bool IPOut::send(IPHeader iph, std::string data) throw (std::runtime_error)
         std::string buf((char*) &iph2, sizeof(IPHeader));
         buf += data.substr(i * max_payload, max_payload);
 #ifdef DEBUG
-        log << "IPOut::send: Fragmento 0 => IPHeader: " << iph2 << "\n";
+        std::cout << "IPOut::send (" << ip << "): Fragmento " << i
+                << " => IPHeader: " << iph2 << "\n";
         std::string tmp = data.substr(i * max_payload, max_payload);
-        log << "\tdata (" << tmp.size() << ") = " << tmp << "\n";
+        std::cout << "\tdata (" << tmp.size() << ") = " << tmp << "\n";
 #endif
         r->iface->transmit(buf, r->gateway ? r->gateway : IPAddr(iph.dst));
     }