Function transformable

example/plugins/c-api/thread_pool/psi.cc:853–893

------------------------------------------------------------------------- transformable Determine if the current transaction should be transformed or not Input: txnp current transaction Output : Return Value: 1 if transformable 0 if not -------------------------------------------------------------------------*/

    0  if not
  -------------------------------------------------------------------------*/
static int
transformable(TSHttpTxn txnp)
{
  /*  We are only interested in transforming "200 OK" responses
     with a Content-Type: text/ header and with X-Psi header */
  TSMBuffer    bufp;
  TSMLoc       hdr_loc;
  TSHttpStatus resp_status;

  if (TS_SUCCESS == TSHttpTxnServerRespGet(txnp, &bufp, &hdr_loc)) {
    resp_status = TSHttpHdrStatusGet(bufp, hdr_loc);
    if (resp_status != TS_HTTP_STATUS_OK) {
      TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
      return 0;
    }

    TSMLoc field_loc;
    field_loc = TSMimeHdrFieldFind(bufp, hdr_loc, TS_MIME_FIELD_CONTENT_TYPE, -1);
    if (field_loc == TS_NULL_MLOC) {
      TSError("[%s] Unable to search Content-Type field", PLUGIN_NAME);
      TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
      return 0;
    }

    const char *value = TSMimeHdrFieldValueStringGet(bufp, hdr_loc, field_loc, -1, nullptr);
    if ((value == nullptr) || (strncasecmp(value, "text/", sizeof("text/") - 1) != 0)) {
      TSHandleMLocRelease(bufp, hdr_loc, field_loc);
      TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
      return 0;
    }

    TSHandleMLocRelease(bufp, hdr_loc, field_loc);

    field_loc = TSMimeHdrFieldFind(bufp, hdr_loc, MIME_FIELD_XPSI, -1);

    TSHandleMLocRelease(bufp, hdr_loc, field_loc);
    TSHandleMLocRelease(bufp, TS_NULL_MLOC, hdr_loc);
  }

  return 1;
}

/*-------------------------------------------------------------------------
  transform_add