Вы можете сделать это, используя Трассировка сети . Чтобы установить его , создайте (или измените, если у вас уже есть) файл App.config, чтобы он выглядел так (если у вас уже есть файл, вам нужно будет добавить настройки в it):
Если вы это сделаете, ваше приложение создаст файл network.log, который может выглядеть примерно так:
System.Net Information: 1 : [8892] FtpWebRequest#2383799::.ctor(ftp://test/)
System.Net Information: 0 : [8892] FtpWebRequest#2383799::GetResponse(Method=LIST.)
System.Net Information: 0 : [8892] Current OS installation type is 'Client'.
System.Net Information: 0 : [8892] RAS supported: True
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Created connection from 192.168.1.1:51833 to 192.168.1.2:21.
System.Net Information: 0 : [8892] Associating FtpWebRequest#2383799 with FtpControlStream#33675143
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [220 This is the test FTP server. Authentication required.]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [USER svick]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [331 Password required for svick]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [PASS ********]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [230 Logged on]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [OPTS utf8 on]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [200 UTF8 mode enabled]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [PWD]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [257 "/" is current directory.]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [TYPE I]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [200 Type set to I]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [PASV]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [227 Entering Passive Mode (174,37,88,92,117,98)]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Sending command [LIST]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [150 Connection accepted]
System.Net Information: 0 : [8892] FtpControlStream#33675143 - Received response [226 Transfer OK]
System.Net Information: 0 : [8892] FtpWebRequest#2383799::(Releasing FTP connection#33675143.)
Это довольно многословный, но он содержит необходимую информацию. Если вы хотите изменить способ записи файла журнала, вы можете реализовать свой собственный TraceListener и использовать его в файле конфигурации вместо TextWriterTraceListener.
