Merge branch 'issue/0004-network-reload-histogram' (reload page + histogram + WS stats)

network_state.cpp

@@ -448,6 +448,12 @@ NetworkStats NetworkSession::stats() const {
     return stats_;
 }
 
+bool NetworkSession::reload_page(bool ignore_cache) {
+    if (!ws_ || !ws_->is_connected()) return false;
+    std::string params = ignore_cache ? "{\"ignoreCache\":true}" : "{\"ignoreCache\":false}";
+    return ws_->send_command("Page.reload", params) > 0;
+}
+
 std::string NetworkSession::export_har_json() const {
     // HAR 1.2 minimo. log.entries[].request/response/timings.
     std::lock_guard<std::mutex> lk(mu_);

network_state.h

@@ -154,6 +154,15 @@ public:
     // Drag-and-drop import/export HAR.
     std::string export_har_json() const;
 
+    // Envia Page.reload via CDP. ignore_cache=true equivalente a Ctrl+Shift+R.
+    bool reload_page(bool ignore_cache = false);
+
+    // Stats del WebSocket subyacente — utiles para diagnosticar si el canal
+    // CDP esta vivo aunque la tabla siga vacia.
+    uint64_t ws_frames_in()  const { return ws_ ? ws_->frames_in()  : 0; }
+    uint64_t ws_bytes_in()   const { return ws_ ? ws_->bytes_in()   : 0; }
+    uint64_t ws_bytes_out()  const { return ws_ ? ws_->bytes_out()  : 0; }
+
 private:
     std::unique_ptr<CdpWs>                                  ws_;
     std::string                                             ws_url_;

panels.cpp

@@ -7,6 +7,7 @@
 // Estado cross-panel via g_session() (session_state.h).
 
 #include "imgui.h"
+#include "implot.h"
 #include "core/icons_tabler.h"
 #include "core/tokens.h"
 
@@ -503,6 +504,11 @@ struct NetUiState {
     std::string selected_id;            // requestId estable
 
     int      detail_tab = 0;            // 0 headers, 1 payload, 2 response, 3 cookies, 4 timing, 5 ws
+
+    // Histograma overview (request starts/s).
+    bool     show_histogram = true;
+    int      histogram_bins = 30;
+    bool     reload_ignore_cache = false;
 };
 NetUiState g_net_ui;
 
@@ -745,6 +751,17 @@ void draw_request_detail(const NetworkRequest& r, NetworkSession* net) {
 }
 
 void render_network_toolbar(NetworkSession* net) {
+    // Reload page (Page.reload via CDP). Si no hay sesion, deshabilita.
+    if (!net) ImGui::BeginDisabled();
+    if (ImGui::Button(TI_REFRESH " Reload")) {
+        if (net) net->reload_page(g_net_ui.reload_ignore_cache);
+    }
+    if (!net) ImGui::EndDisabled();
+    ImGui::SameLine();
+    ImGui::Checkbox("Bypass cache", &g_net_ui.reload_ignore_cache);
+    ImGui::SameLine();
+    ImGui::TextDisabled("|");
+    ImGui::SameLine();
     if (ImGui::Button(TI_TRASH " Clear")) {
         if (net) net->clear_log();
         g_net_ui.selected_id.clear();
@@ -755,6 +772,8 @@ void render_network_toolbar(NetworkSession* net) {
         g_net_ui.paused = !g_net_ui.paused;
     }
     ImGui::SameLine();
+    ImGui::Checkbox(TI_CHART_HISTOGRAM " Histogram", &g_net_ui.show_histogram);
+    ImGui::SameLine();
     ImGui::TextDisabled("|");
     ImGui::SameLine();
     bool preserve = net ? net->preserve_log() : true;
@@ -833,6 +852,51 @@ void render_network_panel(bool* p_open) {
 
     // Snapshot + filtrado.
     auto reqs = net->snapshot();
+
+    // ---------- Histograma overview ----------
+    if (g_net_ui.show_histogram) {
+        std::vector<double> starts;
+        starts.reserve(reqs.size());
+        double t_max = 1.0;
+        for (const auto& r : reqs) {
+            if (r->t_started >= 0.0) {
+                starts.push_back(r->t_started);
+                if (r->t_started > t_max) t_max = r->t_started;
+            }
+        }
+        // Tamaño bin dinamico — bins fijo 30, rango 0..t_max.
+        if (ImPlot::BeginPlot("##req_histogram", ImVec2(-1, 100),
+                              ImPlotFlags_NoTitle | ImPlotFlags_NoMouseText |
+                              ImPlotFlags_NoBoxSelect | ImPlotFlags_NoMenus |
+                              ImPlotFlags_NoFrame)) {
+            ImPlot::SetupAxes("t (s)", "reqs/bin",
+                              ImPlotAxisFlags_NoMenus,
+                              ImPlotAxisFlags_AutoFit | ImPlotAxisFlags_NoMenus);
+            ImPlot::SetupAxisLimits(ImAxis_X1, 0.0, t_max + 0.001, ImPlotCond_Always);
+
+            if (!starts.empty()) {
+                ImPlot::PlotHistogram("Requests/bin",
+                                      starts.data(), (int)starts.size(),
+                                      g_net_ui.histogram_bins, 1.0,
+                                      ImPlotRange(0.0, t_max + 0.001));
+            }
+
+            // Marcadores DOMContentLoaded / Load.
+            auto stats = net->stats();
+            if (stats.dom_content_loaded > 0) {
+                double x = stats.dom_content_loaded;
+                ImPlot::TagX(x, fn_tokens::colors::info, "DCL");
+            }
+            if (stats.load_event > 0) {
+                double x = stats.load_event;
+                ImPlot::TagX(x, fn_tokens::colors::success, "L");
+            }
+            ImPlot::EndPlot();
+        }
+        ImGui::Separator();
+    }
+    // ---------- /histograma ----------
+
     std::string filt = g_net_ui.filter_text;
     std::string filt_lower = filt;
     std::transform(filt_lower.begin(), filt_lower.end(), filt_lower.begin(), ::tolower);
@@ -1002,8 +1066,21 @@ void render_network_panel(bool* p_open) {
         ImGui::Text("L: %.2f", stats.load_event);
     }
     ImGui::SameLine(); ImGui::TextDisabled("|"); ImGui::SameLine();
-    ImGui::Text("WS bytes in: %llu out: %llu",
-                (unsigned long long)0, (unsigned long long)0);
+    {
+        uint64_t fin = net->ws_frames_in();
+        uint64_t bin = net->ws_bytes_in();
+        uint64_t bout = net->ws_bytes_out();
+        bool alive = (fin > 0);
+        ImGui::PushStyleColor(ImGuiCol_Text,
+            alive ? fn_tokens::colors::success : fn_tokens::colors::warning);
+        ImGui::Text("CDP: %s", alive ? "alive" : "no events");
+        ImGui::PopStyleColor();
+        ImGui::SameLine();
+        ImGui::TextDisabled("(%llu frames, in %s / out %s)",
+            (unsigned long long)fin,
+            fmt_size((int64_t)bin).c_str(),
+            fmt_size((int64_t)bout).c_str());
+    }
 
     ImGui::End();
 }