Fix bridge mode to use SSL for WebSocket communication

- Bridge mode was incorrectly using raw socket operations over SSL connection
- Updated to use SSL_read/SSL_write for all WebSocket communication
- Fixed send_websocket_message to use send_websocket_frame with SSL
- Fixed pong frame sending to use SSL
- Fixed select() and FD_ISSET to monitor correct socket

This resolves the 'send_error' and connection closure issues in bridge mode tests.

test_bridge_mode.sh

@@ -106,20 +106,77 @@ test_bridge_mode() {
         fi
     done
 
-    # Test 1: Send a status command
-    log_info "Test 1: Sending status command"
-    send_command '{"command":"status","timestamp":'$(date +%s)'}' >&${wsssht_in}
+    # Generate a unique request ID for the tunnel
+    REQUEST_ID="test_$(date +%s)_$$"
+
+    # Test 1: Send tunnel request
+    log_info "Test 1: Sending tunnel request"
+    send_command '{"type":"tunnel_request","client_id":"'$CLIENT_ID'","request_id":"'$REQUEST_ID'","tunnel":"any","tunnel_control":"any","service":"ssh","timestamp":'$(date +%s)'}' >&${wsssht_in}
+
+    # Wait for tunnel acknowledgment
+    log_info "Waiting for tunnel acknowledgment..."
+    local tunnel_ack_received=false
+    local timeout_counter=0
+    while [ $timeout_counter -lt 10 ]; do  # 10 second timeout
+        if read -t 1 -u ${wsssht_out} line 2>/dev/null; then
+            if [ -n "$line" ]; then
+                log_info "Response: $line"
+                # Check if we received tunnel_ack
+                if echo "$line" | grep -q '"message".*"tunnel_ack"'; then
+                    log_success "Tunnel acknowledgment received!"
+                    tunnel_ack_received=true
+                    break
+                fi
+            fi
+        fi
+        timeout_counter=$((timeout_counter + 1))
+    done
 
-    sleep 2
-    read_response
+    if [ "$tunnel_ack_received" = false ]; then
+        log_error "Timeout waiting for tunnel acknowledgment"
+        # Send quit to clean up
+        send_command '{"command":"quit","timestamp":'$(date +%s)'}' >&${wsssht_in}
+        return 1
+    fi
 
-    # Test 2: Monitor for tunnel control messages
-    log_info "Test 2: Monitoring for tunnel control messages (5 seconds)"
-    log_info "Note: In a real scenario, you would see tunnel_data, tunnel_response, or tunnel_close messages here"
-    sleep 5
+    # Test 2: Send data message with text string
+    log_info "Test 2: Sending data message with text string"
+    TEST_MESSAGE="Hello from bridge mode test!"
+    # Convert to hex for tunnel_data format
+    HEX_MESSAGE=$(echo -n "$TEST_MESSAGE" | xxd -p | tr -d '\n')
+    send_command '{"type":"tunnel_data","request_id":"'$REQUEST_ID'","data":"'$HEX_MESSAGE'","timestamp":'$(date +%s)'}' >&${wsssht_in}
+
+    # Wait for tunnel response
+    log_info "Waiting for tunnel response..."
+    local tunnel_response_received=false
+    timeout_counter=0
+    while [ $timeout_counter -lt 10 ]; do  # 10 second timeout
+        if read -t 1 -u ${wsssht_out} line 2>/dev/null; then
+            if [ -n "$line" ]; then
+                log_info "Response: $line"
+                # Check if we received tunnel_response
+                if echo "$line" | grep -q '"message".*"tunnel_response"'; then
+                    log_success "Tunnel response received!"
+                    tunnel_response_received=true
+                    break
+                fi
+            fi
+        fi
+        timeout_counter=$((timeout_counter + 1))
+    done
+
+    if [ "$tunnel_response_received" = false ]; then
+        log_warning "No tunnel response received within timeout"
+    fi
+
+    # Test 3: Send tunnel close
+    log_info "Test 3: Sending tunnel close"
+    send_command '{"type":"tunnel_close","request_id":"'$REQUEST_ID'","timestamp":'$(date +%s)'}' >&${wsssht_in}
+
+    sleep 2
 
-    # Test 3: Send a quit command
-    log_info "Test 3: Sending quit command"
+    # Test 4: Send quit command to end bridge mode
+    log_info "Test 4: Sending quit command to end bridge mode"
     send_command '{"command":"quit","timestamp":'$(date +%s)'}' >&${wsssht_in}
 
     sleep 2

wssshtools/wsssht.c

@@ -297,6 +297,16 @@ int run_bridge_mode(wsssh_config_t *config, const char *client_id, const char *w
         return 1;
     }
 
+    // Get the SSL connection for sending messages
+    SSL *ws_ssl = active_tunnel ? active_tunnel->ssl : NULL;
+    if (!ws_ssl) {
+        printf("{\"type\":\"error\",\"message\":\"Failed to get SSL connection\",\"timestamp\":%ld}\n", time(NULL));
+        fflush(stdout);
+        close(ws_sock);
+        if (ws_ctx) SSL_CTX_free(ws_ctx);
+        return 1;
+    }
+
     // Send connection established message
     printf("{\"type\":\"websocket_connected\",\"socket\":%d,\"timestamp\":%ld}\n", ws_sock, time(NULL));
     fflush(stdout);
@@ -349,8 +359,8 @@ int run_bridge_mode(wsssh_config_t *config, const char *client_id, const char *w
                         channel = "data";
                     }
 
-                    // Send message to appropriate WebSocket channel
-                    if (send_websocket_message(ws_sock, buffer, len, channel, config->debug) == 0) {
+                    // Send message to appropriate WebSocket channel using SSL
+                    if (send_websocket_frame(ws_ssl, buffer)) {
                         printf("{\"type\":\"message_sent\",\"channel\":\"%s\",\"message\":\"%s\",\"timestamp\":%ld}\n",
                                channel, buffer, time(NULL));
                         fflush(stdout);
@@ -364,8 +374,9 @@ int run_bridge_mode(wsssh_config_t *config, const char *client_id, const char *w
             // Handle WebSocket data (messages from server)
             if (FD_ISSET(ws_sock, &readfds)) {
                 if ((size_t)frame_buffer_used < sizeof(frame_buffer)) {
-                    int bytes_read = recv(ws_sock, frame_buffer + frame_buffer_used,
-                                          sizeof(frame_buffer) - frame_buffer_used, 0);
+                    // Use SSL to read WebSocket data
+                    int bytes_read = SSL_read(ws_ssl, frame_buffer + frame_buffer_used,
+                                              sizeof(frame_buffer) - frame_buffer_used);
 
                     if (bytes_read > 0) {
                         frame_buffer_used += bytes_read;
@@ -406,7 +417,10 @@ int run_bridge_mode(wsssh_config_t *config, const char *client_id, const char *w
                                 printf("{\"type\":\"ping_received\",\"timestamp\":%ld}\n", time(NULL));
                                 fflush(stdout);
                                 // Send pong
-                                send_pong_frame_ws(ws_sock, payload, payload_len);
+                                if (!send_pong_frame(ws_ssl, payload, payload_len)) {
+                                    printf("{\"type\":\"pong_send_error\",\"timestamp\":%ld}\n", time(NULL));
+                                    fflush(stdout);
+                                }
                             } else if (frame_type == 0x8A) { // Pong frame
                                 printf("{\"type\":\"pong_received\",\"timestamp\":%ld}\n", time(NULL));
                                 fflush(stdout);