Add a "confidence" field about the reliability of the classification. (#1395)

As a general rule, the higher the confidence value, the higher the
"reliability/precision" of the classification.

In other words, this new field provides an hint about "how" the flow
classification has been obtained.
For example, the application may want to ignore classification "by-port"
(they are not real DPI classifications, after all) or give a second
glance at flows classified via LRU caches (because of false positives).

Setting only one value for the confidence field is a bit tricky: more
work is probably needed in the next future to tweak/fix/improve the logic.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/include/ndpi_api.h.in b/src/include/ndpi_api.h.in
index 28f305193..40e16c993 100644
--- a/src/include/ndpi_api.h.in
+++ b/src/include/ndpi_api.h.in
@@ -582,6 +582,15 @@ extern "C" {
 				     ndpi_protocol_category_t category);
 
   /**
+   * Get classification confidence as string
+   *
+   * @par     confidence      = the confidence value
+   * @return  the string name of the confidence result
+   *
+   */
+  const char* ndpi_confidence_get_name(ndpi_confidence_t confidence);
+
+  /**
    * Set protocol category string
    *
    * @par     mod           = the detection module