Executing HTTP Request from ABAP

Question

Hi Experts,
I am trying to fill & submit an http form through abap using CL_HTTP_CLIENT class methods "request". here is my code:-
DATA: client TYPE REF TO if_http_client.
Create Client-Object
CALL METHOD CL_HTTP_CLIENT=>CREATE_BY_URL
  EXPORTING
    url                = url_string
  IMPORTING
    CLIENT             = client
  EXCEPTIONS
    ARGUMENT_NOT_FOUND = 1
    PLUGIN_NOT_ACTIVE  = 2
    INTERNAL_ERROR     = 3
    others             = 4.
IF sy-subrc <> 0.
  WRITE: / 'Client Object could not be created. SUBRC=', sy-subrc.
  EXIT.
ENDIF.
Set Header Field of request
CALL METHOD client->request->if_http_entity~set_header_field
  EXPORTING
    name  = '~request_enctype'
    value = 'multipart/form-data'.
CALL METHOD client->request->if_http_entity~set_header_field
  EXPORTING
    name  = '~request_method'
    value = 'POST'.
try posting form fields
CALL METHOD client->request->if_http_entity~set_form_field
  EXPORTING
    name  = 'datasource'
    value = 'GSAPO'.
CALL METHOD client->request->if_http_entity~set_form_field
  EXPORTING
    name  = 'feedtype'
    value = 'full'.
CALL METHOD client->request->if_http_entity~set_form_field
  EXPORTING
    name  = 'data'
    value = xml_string.
CALL METHOD client->send
EXPORTING
   TIMEOUT                    = CLIENT->CO_TIMEOUT_INFINITE
  EXCEPTIONS
    http_communication_failure = 1
    http_invalid_state         = 2
    http_processing_failed     = 3
    http_invalid_timeout       = 4
    OTHERS                     = 5
IF sy-subrc <> 0.
  WRITE: / 'Request could not be sent - communication error. SUBRC=',
                                                             sy-subrc.
  EXIT.
ENDIF.
Receive Response
CALL METHOD client->receive
  EXCEPTIONS
    http_communication_failure = 1
    http_invalid_state         = 2
    http_processing_failed     = 3
    OTHERS                     = 4.
IF sy-subrc <> 0.
  WRITE: 'Response not obtained - communication error SUBRC = ' ,
sy-subrc.
  EXIT.
ENDIF.
Close HTTP connection
CALL METHOD client->close
  EXCEPTIONS
    http_invalid_state = 1
    OTHERS             = 2.
IF sy-subrc <> 0.
  WRITE 'HTTP connection in undefined state'.
  EXIT.
ENDIF.
*End of code.
The problem here is I am getting exception "http_connection_failed" in recieve method.
Can any body help me out.
Thanks in advance.
Madhu.

Answer 1

is the http destination within intranet or internet? do you connect to internet via proxy server?
Raja