add proxy server/client indicator (S/C) in connection monitor

src/chat/chat_status.c

@@ -16,6 +16,9 @@
 #include "../transport_layer/etcp_connections.h"
 #include "../transport_layer/stcp_link.h"
 #include "../transport_layer/pkt_normalizer.h"
+#include "../proxy/tcp_proxy_server.h"
+#include "../proxy/udp_proxy.h"
+#include "../proxy/icmp_proxy.h"
 #include <string.h>
 
 static const char* nat_type_str(uint8_t t) {
@@ -147,6 +150,18 @@ static void collect_conn_list(void) {
         uint8_t flags = 0;
         if (conn->links_up) flags |= 1;
         if (conn->initialized) flags |= 2;
+        if (g_cc.inst->tcp_proxy_client && ce->peer_node_id == g_cc.inst->config->global.tcp_proxy_client_via_node_id)
+            flags |= 4;
+        if (g_cc.inst->config->global.tcp_proxy_server_enabled) {
+            for (struct tcp_proxy_server_conn* sc = g_cc.inst->tcp_proxy_server.conns; sc; sc = sc->next)
+                if (sc->peer_node_id == ce->peer_node_id) { flags |= 8; break; }
+            if (!(flags & 8) && g_udp_ctx && g_udp_ctx->is_exit)
+                for (struct udp_flow* f = g_udp_ctx->flows; f; f = f->next)
+                    if (f->client_node_id == ce->peer_node_id) { flags |= 8; break; }
+            if (!(flags & 8) && g_icmp_ctx && g_icmp_ctx->is_exit)
+                for (struct icmp_request* r = g_icmp_ctx->pending; r; r = r->next)
+                    if (r->client_node_id == ce->peer_node_id) { flags |= 8; break; }
+        }
         *p++ = flags;
 
         uint8_t lc = 0;
@@ -198,12 +213,29 @@ static void collect_conn_metrics(uint64_t peer_node_id) {
     char peername[64]; get_node_name(peer_node_id, peername, sizeof(peername));
     if (!peername[0]) snprintf(peername, sizeof(peername), "%016llX", (unsigned long long)peer_node_id);
 
+    int is_client = 0, is_server = 0;
+    if (g_cc.inst->tcp_proxy_client && peer_node_id == g_cc.inst->config->global.tcp_proxy_client_via_node_id)
+        is_client = 1;
+    if (g_cc.inst->config->global.tcp_proxy_server_enabled) {
+        for (struct tcp_proxy_server_conn* sc = g_cc.inst->tcp_proxy_server.conns; sc; sc = sc->next)
+            if (sc->peer_node_id == peer_node_id) { is_server = 1; break; }
+        if (!is_server && g_udp_ctx && g_udp_ctx->is_exit)
+            for (struct udp_flow* f = g_udp_ctx->flows; f; f = f->next)
+                if (f->client_node_id == peer_node_id) { is_server = 1; break; }
+        if (!is_server && g_icmp_ctx && g_icmp_ctx->is_exit)
+            for (struct icmp_request* r = g_icmp_ctx->pending; r; r = r->next)
+                if (r->client_node_id == peer_node_id) { is_server = 1; break; }
+    }
+    const char* role_str = is_client && is_server ? "proxy client+server" :
+                           is_client ? "proxy client" : is_server ? "proxy server" : "none";
+
     /* Count links */
     int link_count = 0, links_up_count = 0;
     struct ETCP_LINK* tl = conn->links; while (tl) { if (tl->link_status) links_up_count++; link_count++; tl = tl->next; }
 
     off += snprintf(buf + off, sizeof(buf) - off,
         "=== PEER: %04llX\u2192%04llX [%s] ===\n"
+        "Role: %s\n"
         "Status: %s  Links: %d/%d  Initialized: %s  Session: 0x%X  MTU: %d\n"
         "Reinit: %u  Reset: %u  Tx_state: %d  Routing_exchange: %d\n"
         "\n--- ETCP ---\n"
@@ -214,6 +246,7 @@ static void collect_conn_metrics(uint64_t peer_node_id) {
         "IDs: next_tx=%u last_rx=%u last_del=%u rx_ack_till=%u\n"
         "\n--- Queues ---\n",
         (unsigned long long)(my_id & 0xFFFF), (unsigned long long)(peer_node_id & 0xFFFF), peername,
+        role_str,
         conn->links_up ? "UP" : "DOWN", links_up_count, link_count,
         conn->initialized ? "yes" : "no", conn->session_id, conn->mtu,
         conn->reinit_count, conn->reset_count, conn->tx_state, conn->routing_exchange_active,

src/proxy/icmp_proxy.c

@@ -48,7 +48,7 @@ struct ip {
 #define ICMP_DEF_TTL        64
 #define ICMP_TIMEOUT_TB     50000  // 5s for echo reply
 
-static struct icmp_proxy_ctx* g_icmp_ctx = NULL;
+struct icmp_proxy_ctx* g_icmp_ctx = NULL;
 
 static void req_expire_timer_cb(void* arg);
 static void req_expire(struct icmp_proxy_ctx* ctx);

src/proxy/icmp_proxy.h

@@ -50,6 +50,8 @@ struct icmp_proxy_ctx {
     void*        expire_timer;     // периодический таймер очистки истёкших запросов
 };
 
+extern struct icmp_proxy_ctx* g_icmp_ctx;
+
 int icmp_proxy_init(struct UTUN_INSTANCE* inst, struct UASYNC* ua);
 void icmp_proxy_destroy(struct UTUN_INSTANCE* inst);
 

src/proxy/udp_proxy.c

@@ -23,7 +23,7 @@
 
 #define UDP_FLOW_TIMEOUT_TB 600000  // 60с
 
-static struct udp_proxy_ctx* g_udp_ctx = NULL;
+struct udp_proxy_ctx* g_udp_ctx = NULL;
 
 static void flow_expire_timer_cb(void* arg);
 static void flow_expire(struct udp_proxy_ctx* ctx);

src/proxy/udp_proxy.h

@@ -48,6 +48,8 @@ struct udp_proxy_ctx {
     void*        expire_timer;     // периодический таймер очистки истёкших потоков
 };
 
+extern struct udp_proxy_ctx* g_udp_ctx;
+
 int udp_proxy_init(struct UTUN_INSTANCE* inst, struct UASYNC* ua);
 void udp_proxy_destroy(struct UTUN_INSTANCE* inst);
 

tools/chatgui/src/connmonitorwindow.cpp

@@ -146,15 +146,24 @@ void ConnMonitorWindow::onConnList(const uint8_t* data, int len) {
 
         bool linksUp = (flags & 1) != 0;
         bool initialized = (flags & 2) != 0;
+        bool proxyClient = (flags & 4) != 0;
+        bool proxyServer = (flags & 8) != 0;
         QString color = linksUp ? "#2E7D32" : "#C62828";
         QString status = linksUp ? "UP" : (initialized ? "init" : "DOWN");
 
+        QString proxyRole;
+        if (proxyClient && proxyServer) proxyRole = "CS";
+        else if (proxyClient) proxyRole = " C";
+        else if (proxyServer) proxyRole = " S";
+
         QString nodeHex = QString("%1").arg(nodeId, 16, 16, QChar('0')).right(16).left(4);
         QString rttStr = rtt > 0 ? QString::number(rtt / 10.0f, 'f', 1) : "-";
-        QString text = QString("[%1] %2  %3  rtt=%4ms")
+        QString text = QString("[%1] %2  %3%4 %5L  rtt=%6ms")
             .arg(nodeHex)
             .arg(QString::fromUtf8(name).left(16), -16)
-            .arg(status + QString(" %1L").arg(linkCount), -10)
+            .arg(status, -4)
+            .arg(proxyRole, -2)
+            .arg(linkCount)
             .arg(rttStr);
 
         auto it = existing.find(nodeId);