bringing over changes from the dawn 2.x branch to ensure no pending fixes are lost.

plugins/net_plugin/net_plugin.cpp

@@ -793,12 +793,10 @@ namespace eosio {
   }
 
     void connection::send_handshake( ) {
-      handshake_message hello;
-      handshake_initializer::populate(hello);
-      hello.generation = ++sent_handshake_count;
-      last_handshake_sent = hello;
+      handshake_initializer::populate(last_handshake_sent);
+      last_handshake_sent.generation = ++sent_handshake_count;
       fc_dlog(logger, "Sending handshake to ${ep}", ("ep", peer_addr));
-      enqueue(hello);
+      enqueue(last_handshake_sent);
     }
 
   char* connection::convert_tstamp(const tstamp& t)
@@ -857,7 +855,13 @@ namespace eosio {
           conn->write_depth--;
 
           if(ec) {
-            elog("Error sending to connection: ${i}", ("i", ec.message()));
+            string pname = conn ? conn->peer_name() : "no connection name";
+            if( ec.value() != boost::asio::error::eof) {
+              elog("Error sending to peer ${p}: ${i}", ("p",pname)("i", ec.message()));
+            }
+            else {
+              ilog("connection closure detected on write to ${p}",("p",pname));
+            }
             my_impl->close(conn);
             return;
           }
@@ -865,13 +869,19 @@ namespace eosio {
           conn->do_queue_write();
         }
         catch(const std::exception &ex) {
-          elog("Exception in do_queue_write ${s}", ("s",ex.what()));
+          auto conn = c.lock();
+          string pname = conn ? conn->peer_name() : "no connection name";
+          elog("Exception in do_queue_write to ${p} ${s}", ("p",pname)("s",ex.what()));
         }
         catch(const fc::exception &ex) {
-          elog("Exception in do_queue_write ${s}", ("s",ex.to_string()));
+          auto conn = c.lock();
+          string pname = conn ? conn->peer_name() : "no connection name";
+          elog("Exception in do_queue_write to ${p} ${s}", ("p",pname)("s",ex.to_string()));
         }
         catch(...) {
-          elog("Exception in do_queue_write");
+          auto conn = c.lock();
+          string pname = conn ? conn->peer_name() : "no connection name";
+          elog("Exception in do_queue_write to ${p}", ("p",pname) );
         }
       });
   }
@@ -1409,26 +1419,35 @@ namespace eosio {
                 }
                 start_read_message(conn);
               } else {
-                elog( "Error reading message from connection: ${m}",( "m", ec.message() ) );
+                auto pname = conn->peer_name();
+                if (ec.value() != boost::asio::error::eof) {
+                  elog( "Error reading message from ${p}: ${m}",("p",pname)( "m", ec.message() ) );
+                } else {
+                  ilog( "Peer ${p} closed connection",("p",pname) );
+                }
                 close( conn );
               }
             }
             catch(const std::exception &ex) {
-              elog("Exception in handling read data ${s}", ("s",ex.what()));
+              string pname = conn ? conn->peer_name() : "no connection name";
+              elog("Exception in handling read data from ${p} ${s}",("p",pname)("s",ex.what()));
               close( conn );
             }
             catch(const fc::exception &ex) {
-              elog("Exception in handling read data ${s}", ("s",ex.to_string()));
+              string pname = conn ? conn->peer_name() : "no connection name";
+              elog("Exception in handling read data ${s}", ("p",pname)("s",ex.to_string()));
               close( conn );
             }
             catch (...) {
-              elog( "Undefined exception hanlding the read data from connection: ${m}",( "m", ec.message() ) );
+              string pname = conn ? conn->peer_name() : "no connection name";
+              elog( "Undefined exception hanlding the read data from connection ${p}",( "p",pname));
               close( conn );
             }
           }
         );
       } catch (...) {
-        elog( "Undefined exception handling reading" );
+        string pname = conn ? conn->peer_name() : "no connection name";
+        elog( "Undefined exception handling reading ${p}",("p",pname) );
         close( conn );
       }
     }
@@ -1620,6 +1639,7 @@ namespace eosio {
 
   void net_plugin_impl::handle_message( connection_ptr c, const go_away_message &msg ) {
     string rsn = reason_str( msg.reason );
+    ilog( "received a go away message, reason = ${r}",("r",rsn));
     c->no_retry = msg.reason;
     if(msg.reason == go_away_reason::duplicate ) {
       c->node_id = msg.node_id;
@@ -2300,7 +2320,7 @@ namespace eosio {
     // If we couldn't sign, don't send a token.
     if(hello.sig == chain::signature_type())
       hello.token = sha256();
-    hello.p2p_address = my_impl->p2p_address;
+    hello.p2p_address = my_impl->p2p_address + " - " + hello.node_id.str().substr(0,7);
 #if defined( __APPLE__ )
     hello.os = "osx";
 #elif defined( __linux__ )