Cisco Cisco IOS Software Release 12.2(27)SBC

To enable debugging output for the HTTP client, use the debug ip http client command in privileged 
EXEC mode. To disable debugging output for the HTTP client, use the no or undebug form of this 
command.

debug ip http client {all | api | cache | error | main | msg | socket} 

no debug ip http client {all | api | cache | error | main | msg | socket} 

undebug ip http client {all | api | cache | error | main | msg | socket} 

Privileged EXEC

Use this command to display transactional information for the HTTP client for debugging purposes.

The following example shows sample debugging output for a failed copy transfer operation when the 
host name resolution fails:

Router# debug ip http client all

2w4d: Cache ager called

Router# copy http://www.example.com/index.html flash:index.html 

Destination filename [index.html]? 

Erase flash: before copying? [confirm] no 

Translating "www.example.com"

% Bad IP address for host www.example.com

%Error opening http://www.example.com/index.html (I/O error)

Router#

2w4d: http_client_request:

all 

Enables debugging for all HTTP client elements.

api 

Enables debugging output for the HTTP client application interface (API). 

cache 

Enables debugging output for the HTTP client cache. 

error 

Enables debugging output for HTTP communication errors. 

main 

Enables debugging output specific to the Voice XML (VXML) applications 
interacting with the HTTP client.

msg 

Enables debugging output of HTTP client messages. 

socket 

Enables debugging output specific to the HTTP client socket. 

12.3(2)T

This command was introduced.

12.2(31)SB2

This command was integrated into Cisco IOS Release 12.2(31)SB2.