Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill...

Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill the app after 8 hours of inactivity) #2163, #428 [kajism@yahoo.com]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2182 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill the app after 8 hours of inactivity) #2163, #428 [kajism@yahoo.com]
+
 * Fixed comparison of Active Record objects so two new objects are not equal #2099 [deberg]
 
 * Fixed that the SQL Server adapter would sometimes return DBI::Timestamp objects instead of Time #2127 [Tom Ward]

activerecord/lib/active_record/vendor/mysql.rb

@@ -1022,6 +1022,9 @@ def read()
       end
       @sock.sync = true
       buf.join
+    rescue
+      errno = Error::CR_SERVER_LOST
+      raise Error::new(errno, Error::err(errno))
     end
     
     def write(data)
@@ -1039,6 +1042,9 @@ def write(data)
       @pkt_nr = @pkt_nr + 1 & 0xff
       @sock.sync = true
       @sock.flush
+    rescue
+      errno = Error::CR_SERVER_LOST
+      raise Error::new(errno, Error::err(errno))
     end
 
     def close()