fix: MemberLinkSnap/MemberSockSnap port int→uint16_t avoids stack garbage

src/transport_layer/etcp_connections.c

@@ -1166,9 +1166,11 @@ static void tcp_link_reconnect_cb(void *arg) {
     if (link->tcp_reconnect_delay_ms == 0) link->tcp_reconnect_delay_ms = 1000;
     DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[%s] TCP link %d reconnect attempt (delay=%ums)", link->etcp->log_name, link->local_link_id, link->tcp_reconnect_delay_ms);
     uint16_t port = ntohs(((struct sockaddr_in *)&link->remote_addr)->sin_port);
-    struct stcp_link_config tcp_cfg = {.ua = link->etcp->instance->ua, .my_keys = &link->etcp->instance->my_keys, .inst = link->etcp->instance, .peer_pubkey = link->etcp->crypto_ctx.peer_public_key, .peer_pubkey_mode = 0, .remote_addr = &link->remote_addr, .remote_port = port, .got_initial_pkt = link->etcp->got_initial_pkt, .session_id = link->etcp->session_id};
+    struct stcp_link_config tcp_cfg = {.ua = link->etcp->instance->ua, .my_keys = &link->etcp->instance->my_keys, .inst = link->etcp->instance, .peer_pubkey = link->etcp->crypto_ctx.peer_public_key,
+                                       .peer_pubkey_mode = 0, .remote_addr = &link->remote_addr, .remote_port = port, .got_initial_pkt = link->etcp->got_initial_pkt, .session_id = link->etcp->session_id};
     struct stcp_link *sl = stcp_link_connect(&tcp_cfg);
-    if (!sl) { link->tcp_reconnect_delay_ms *= 2; if (link->tcp_reconnect_delay_ms > 30000) link->tcp_reconnect_delay_ms = 30000; link->tcp_reconnect_timer = uasync_set_timeout(link->etcp->instance->ua, (int)(link->tcp_reconnect_delay_ms * 10), link, tcp_link_reconnect_cb, "tcp_rct"); return; }
+    if (!sl) { link->tcp_reconnect_delay_ms *= 2; if (link->tcp_reconnect_delay_ms > 30000) link->tcp_reconnect_delay_ms = 30000;
+        link->tcp_reconnect_timer = uasync_set_timeout(link->etcp->instance->ua, (int)(link->tcp_reconnect_delay_ms * 10), link, tcp_link_reconnect_cb, "tcp_rct"); return; }
     link->tcp_link = sl; stcp_link_set_etcp_conn(sl, link->etcp); stcp_link_set_etcp_link(sl, link);
     stcp_link_set_on_close(sl, tcp_link_close_cb, link);
 }
@@ -1176,7 +1178,14 @@ static void tcp_link_reconnect_cb(void *arg) {
 void etcp_tcp_link_start_connect(struct ETCP_LINK *link, struct sockaddr_storage *addr, uint16_t port) {
     if (!link || !link->etcp || !addr) return;
     memcpy(&link->remote_addr, addr, sizeof(*addr));
-    struct stcp_link_config tcp_cfg = {.ua = link->etcp->instance->ua, .my_keys = &link->etcp->instance->my_keys, .inst = link->etcp->instance, .peer_pubkey = link->etcp->crypto_ctx.peer_public_key, .peer_pubkey_mode = 0, .remote_addr = addr, .remote_port = port, .got_initial_pkt = link->etcp->got_initial_pkt, .session_id = link->etcp->session_id};
+    struct stcp_link_config tcp_cfg = {
+        .ua = link->etcp->instance->ua,
+        .my_keys = &link->etcp->instance->my_keys,
+        .inst = link->etcp->instance,
+        .peer_pubkey = link->etcp->crypto_ctx.peer_public_key,
+        .peer_pubkey_mode = 0, .remote_addr = &link->remote_addr, .remote_port = port,
+        .got_initial_pkt = link->etcp->got_initial_pkt,
+        .session_id = link->etcp->session_id};
     struct stcp_link *sl = stcp_link_connect(&tcp_cfg);
     if (!sl) { DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_tcp_link_start_connect: stcp_link_connect failed"); return; }
     link->tcp_link = sl; stcp_link_set_etcp_conn(sl, link->etcp); stcp_link_set_etcp_link(sl, link);
@@ -1199,10 +1208,18 @@ static void tcp_link_close_cb(struct stcp_link *sl, int err, void *arg) {
     struct ETCP_LINK *link = (struct ETCP_LINK *)arg;
     if (!link || !link->etcp) return;
     if (link->etcp->state == 2) return;
-    DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[%s] TCP link %d down err=%d, scheduling reconnect", link->etcp->log_name, link->local_link_id, err);
     stcp_link_close(sl);
     link->tcp_link = NULL;
-    etcp_tcp_link_start_reconnect(link);
+
+    if (link->is_server) {
+        DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[%s] TCP server link %d down err=%d, closing", link->etcp->log_name, link->local_link_id, err);
+        etcp_on_link_down(link->etcp, link);
+        etcp_link_close(link);
+    } else {
+        DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[%s] TCP link %d down err=%d, scheduling reconnect", link->etcp->log_name, link->local_link_id, err);
+        etcp_on_link_down(link->etcp, link);
+        etcp_tcp_link_start_reconnect(link);
+    }
 }
 
 static int etcp_tcp_send(struct ETCP_DGRAM* dgram) {

tools/chatgui/src/accountlist.h

@@ -28,12 +28,12 @@ struct MemberLinkSnap {
     bool   tcpReady;
     int    family;
     QByteArray addr;
-    int    port;
+    uint16_t port;
 };
 
 struct MemberSockSnap {
-    int    sockId;
+    int      sockId;
-    int    port;
+    uint16_t port;
     int    linkCount;
     QString ifname;
 };