ABAP intergate with WeChat

former_member701231 — Wed, 09 Sep 2020 10:16:40 GMT

Hi Experts,

Thank you very much for taking your time to review this issue.

In my case, I want to use ABAP development to achieve access to enterprise wechat. But always received the MSG 417 and failed: NIEHOST_UNKNOWN(-2) . I don't know if there is no configuration or what needs to be done.

Please help me.Thank you very much for your reply.

Here is my code:

  DATA: lo_http_client TYPE REF TO if_http_client,
        gv_json_out    TYPE string,
        lv_url         TYPE string,
        lv_auth        TYPE string,
        lv_head        TYPE string,
        lv_len         TYPE i,
        iv_json_input  TYPE string,
        ev_json_output TYPE string,
        l_content      TYPE char1024,
        l_value        TYPE savwctxt-fieldcont.

  DATA: l_sysubrc    TYPE sysubrc,
        l_error_text TYPE string.

  lv_url = 'https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=xxxxx&corpsecret=xxxxx'.

  CALL METHOD cl_http_client=>create_by_url
    EXPORTING
      url                = lv_url
*     proxy_host         = 
*     proxy_service      = 
*     ssl_id             = 
*     sap_username       =
*     sap_client         = 
    IMPORTING
      client             = lo_http_client
    EXCEPTIONS
      argument_not_found = 1
      plugin_not_active  = 2
      internal_error     = 3
      OTHERS             = 4.
  IF sy-subrc <> 0.
*               Implement suitable error handling here
  ENDIF.

  lo_http_client->propertytype_logon_popup = lo_http_client->co_disabled.

  CALL METHOD lo_http_client->send
    EXCEPTIONS
      http_communication_failure = 1
      http_invalid_state         = 2.

  IF sy-subrc <> 0.

  ENDIF.

  CALL METHOD lo_http_client->receive
    EXCEPTIONS
      http_communication_failure = 1
      http_invalid_state         = 2
      http_processing_failed     = 3.


  IF sy-subrc <> 0.
    CALL METHOD lo_http_client->get_last_error
      IMPORTING
        code    = l_sysubrc
        message = l_error_text.

    WRITE:/ l_sysubrc,
      / l_error_text.
  ENDIF.

  CLEAR ev_json_output.
  ev_json_output = lo_http_client->response->get_cdata( ).

  REPLACE ALL OCCURRENCES OF REGEX '\n' IN ev_json_output WITH space.

  IF ev_json_output IS INITIAL.
    WRITE: / 'faild'.
  ELSE.
    WRITE: / ev_json_output.
  ENDIF.
  CALL METHOD lo_http_client->close.

Here is the output：

Re: ABAP intergate with WeChat

MateuszAdamus — Wed, 09 Sep 2020 10:22:48 GMT

Hello hulianzhou

https://answers.sap.com/questions/222748/conection-error-niehostunknown-2-using-clhttpclien.html

Kind regards,
Mateusz

Re: ABAP intergate with WeChat

kartikrajag — Wed, 09 Sep 2020 17:53:14 GMT

You may also want to refer SAP Note 2735653 - Connections under "HTTP Connections to External Server" folder throws error- Connect to http://xxxxxx failed:NIEHOST_UNKNOWN(-2)

Re: ABAP intergate with WeChat

former_member701231 — Thu, 10 Sep 2020 03:09:08 GMT

Hi Mateusz,

Thank you very much. I'm trying the solution you've provided, and I'm still testing it.

Re: ABAP intergate with WeChat

former_member701231 — Thu, 10 Sep 2020 03:09:47 GMT

Hi Kartik，

Thank you very much. I'm trying the solution you've provided, and I'm still testing it.

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ABAP intergate with WeChat

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