Added HTTP POST sender with detected objects, use: ./darknet detector demo ... -http_post_host webhook.site/898bbd9b-0ddd-49cf-b81d-1f56be98d870

src/coco.c

@@ -396,5 +396,5 @@ void run_coco(int argc, char **argv)
     else if(0==strcmp(argv[2], "valid")) validate_coco(cfg, weights);
     else if(0==strcmp(argv[2], "recall")) validate_coco_recall(cfg, weights);
     else if(0==strcmp(argv[2], "demo")) demo(cfg, weights, thresh, hier_thresh, cam_index, filename, coco_classes, 80, frame_skip,
-		prefix, out_filename, mjpeg_port, json_port, dont_show, ext_output, 0, 0);
+		prefix, out_filename, mjpeg_port, json_port, dont_show, ext_output, 0, 0, 0);
 }

src/demo.c

@@ -105,7 +105,7 @@ double get_wall_time()
 }
 
 void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int cam_index, const char *filename, char **names, int classes,
-    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec)
+    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec, char *http_post_host)
 {
     letter_box = letter_box_in;
     in_img = det_img = show_img = NULL;
@@ -201,6 +201,7 @@ void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int
         //'W', 'M', 'V', '2'
     }
 
+    int send_http_post_once = 0;
     const double start_time_lim = get_time_point();
     double before = get_wall_time();
 
@@ -231,6 +232,17 @@ void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int
                 send_json(local_dets, local_nboxes, l.classes, demo_names, frame_id, demo_json_port, timeout);
             }
 
+            //char *http_post_server = "webhook.site/898bbd9b-0ddd-49cf-b81d-1f56be98d870";
+            if (http_post_host && !send_http_post_once) {
+                int timeout = 3;            // 3 seconds
+                int http_post_port = 80;    // 443 https, 80 http
+                if (send_http_post_request(http_post_host, http_post_port, filename,
+                    dets, nboxes, classes, names, frame_id, ext_output, timeout))
+                {
+                    if (time_limit_sec > 0) send_http_post_once = 1;
+                }
+            }
+
             draw_detections_cv_v3(show_img, local_dets, local_nboxes, demo_thresh, demo_names, demo_alphabet, demo_classes, demo_ext_output);
             free_detections(local_dets, local_nboxes);
 
@@ -332,7 +344,7 @@ void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int
 }
 #else
 void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int cam_index, const char *filename, char **names, int classes,
-    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec)
+    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec, char *http_post_host)
 {
     fprintf(stderr, "Demo needs OpenCV for webcam images.\n");
 }

src/demo.h

@@ -6,7 +6,7 @@
 extern "C" {
 #endif
 void demo(char *cfgfile, char *weightfile, float thresh, float hier_thresh, int cam_index, const char *filename, char **names, int classes,
-    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec);
+    int frame_skip, char *prefix, char *out_filename, int mjpeg_port, int json_port, int dont_show, int ext_output, int letter_box_in, int time_limit_sec, char *http_post_host);
 #ifdef __cplusplus
 }
 #endif

src/detector.c

@@ -1456,6 +1456,7 @@ void run_detector(int argc, char **argv)
     int show_imgs = find_arg(argc, argv, "-show_imgs");
     int mjpeg_port = find_int_arg(argc, argv, "-mjpeg_port", -1);
     int json_port = find_int_arg(argc, argv, "-json_port", -1);
+    char *http_post_host = find_char_arg(argc, argv, "-http_post_host", 0);
     int time_limit_sec = find_int_arg(argc, argv, "-time_limit_sec", 0);
     char *out_filename = find_char_arg(argc, argv, "-out_filename", 0);
     char *outfile = find_char_arg(argc, argv, "-out", 0);
@@ -1524,7 +1525,7 @@ void run_detector(int argc, char **argv)
             if (strlen(filename) > 0)
                 if (filename[strlen(filename) - 1] == 0x0d) filename[strlen(filename) - 1] = 0;
         demo(cfg, weights, thresh, hier_thresh, cam_index, filename, names, classes, frame_skip, prefix, out_filename,
-            mjpeg_port, json_port, dont_show, ext_output, letter_box, time_limit_sec);
+            mjpeg_port, json_port, dont_show, ext_output, letter_box, time_limit_sec, http_post_host);
 
         free_list_contents_kvp(options);
         free_list(options);

src/http_stream.cpp

@@ -2,7 +2,6 @@
 #include "image.h"
 #include "http_stream.h"
 
-
 //
 // a single-threaded, multi client(using select), debug webserver - streaming out mjpg.
 //  on win, _WIN32 has to be defined, must link against ws2_32.lib (socks on linux are for free)
@@ -24,8 +23,13 @@ using std::endl;
 #ifndef USE_CMAKE_LIBS
 #pragma comment(lib, "ws2_32.lib")
 #endif
-#include "gettimeofday.h"
+#define WIN32_LEAN_AND_MEAN
+#define _WINSOCK_DEPRECATED_NO_WARNINGS
+#include <windows.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
 #include <time.h>
+#include "gettimeofday.h"
 #define PORT        unsigned long
 #define ADDRPOINTER   int*
 struct _INIT_W32DATA
@@ -537,6 +541,77 @@ void send_mjpeg(mat_cv* mat, int port, int timeout, int quality)
 }
 // ----------------------------------------
 
+std::string get_system_frame_time_string()
+{
+    std::time_t t = std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
+    struct tm tmp_buf;
+    localtime_s(&tmp_buf, &t);
+    char buff[256];
+    std::strftime(buff, 256, "%A %F %T", &tmp_buf);
+    std::string system_frame_time = buff;
+    return system_frame_time;
+}
+// ----------------------------------------
+
+//#define CPPHTTPLIB_OPENSSL_SUPPORT
+#include "httplib.h"
+
+// https://webhook.site/
+// https://github.com/yhirose/cpp-httplib
+// sent POST http request
+int send_http_post_request(char *http_post_host, int server_port, char *videosource,
+    detection *dets, int nboxes, int classes, char **names, long long int frame_id, int ext_output, int timeout)
+{
+    const float thresh = 0.005; // function get_network_boxes() has already filtred dets by actual threshold
+
+    std::string message;
+
+    for (int i = 0; i < nboxes; ++i) {
+        char labelstr[4096] = { 0 };
+        int class_id = -1;
+        for (int j = 0; j < classes; ++j) {
+            int show = strncmp(names[j], "dont_show", 9);
+            if (dets[i].prob[j] > thresh && show) {
+                if (class_id < 0) {
+                    strcat(labelstr, names[j]);
+                    class_id = j;
+                    char buff[10];
+                    sprintf(buff, " (%2.0f%%)", dets[i].prob[j] * 100);
+                    strcat(labelstr, buff);
+                }
+                else {
+                    strcat(labelstr, ", ");
+                    strcat(labelstr, names[j]);
+                }
+                printf("%s: %.0f%% ", names[j], dets[i].prob[j] * 100);
+            }
+        }
+        if (class_id >= 0) {
+            message += std::string(names[class_id]) + std::string(", id: ") + std::to_string(class_id) + "\n";
+        }
+    }
+
+    if (!message.empty())
+    {
+        std::string time = get_system_frame_time_string();
+        message += "\ntime:\n" + time + "\n";
+        message += "videosource:\n" + std::string(videosource);
+
+        std::string http_post_host_str = http_post_host;
+        int slash_index = http_post_host_str.find("/");
+
+        std::string http_path = http_post_host_str.substr(slash_index, http_post_host_str.length() - slash_index);
+        http_post_host_str = http_post_host_str.substr(0, slash_index);
+
+        // send HTTP-Post request
+        httplib::Client cli(http_post_host_str.c_str(), server_port, timeout);
+        auto res = cli.Post(http_path.c_str(), message, "text/plain");
+
+        return 1;
+    }
+
+    return 0;
+}
 
 #endif      // OPENCV
 

src/http_stream.h

@@ -13,6 +13,9 @@ void send_json(detection *dets, int nboxes, int classes, char **names, long long
 #ifdef OPENCV
 void send_mjpeg(mat_cv* mat, int port, int timeout, int quality);
 
+int send_http_post_request(char *http_post_host, int server_port, char *videosource,
+    detection *dets, int nboxes, int classes, char **names, long long int frame_id, int ext_output, int timeout);
+
 #endif  // OPENCV
 
 #ifdef __cplusplus

src/yolo.c

@@ -359,5 +359,5 @@ void run_yolo(int argc, char **argv)
     else if(0==strcmp(argv[2], "valid")) validate_yolo(cfg, weights);
     else if(0==strcmp(argv[2], "recall")) validate_yolo_recall(cfg, weights);
     else if(0==strcmp(argv[2], "demo")) demo(cfg, weights, thresh, hier_thresh, cam_index, filename, voc_names, 20, frame_skip,
-		prefix, out_filename, mjpeg_port, json_port, dont_show, ext_output, 0, 0);
+		prefix, out_filename, mjpeg_port, json_port, dont_show, ext_output, 0, 0, 0);
 }