Add debug logging to web proxy for troubleshooting connection issues

wssshd2/web_proxy.c

@@ -450,10 +450,13 @@ static int handle_proxy_request(int client_fd, wssshd_state_t *state, const wsss
     bool use_ssl = false;
     if (strcmp(service_type, "https") == 0) {
         use_ssl = true;
+        printf("[WEB-PROXY] Service type 'https', using SSL\n");
     } else if (strcmp(service_type, "web") == 0) {
         use_ssl = true; // Try HTTPS first for 'web'
+        printf("[WEB-PROXY] Service type 'web', trying SSL first\n");
+    } else {
+        printf("[WEB-PROXY] Service type '%s', using plain TCP\n", service_type);
     }
-    // 'http' leaves use_ssl = false
 
     // Find or create wsssht process
     wsssht_process_t *proc = find_or_create_wsssht_process(hostname, service_type, client->client_id, config->domain);
@@ -476,20 +479,26 @@ static int handle_proxy_request(int client_fd, wssshd_state_t *state, const wsss
     addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
     addr.sin_port = htons(proc->port);
 
+    printf("[WEB-PROXY] Connecting to wsssht on localhost:%d\n", proc->port);
     if (connect(tunnel_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+        perror("[WEB-PROXY] Failed to connect to wsssht");
         close(tunnel_fd);
         send_http_error(client_fd, 502, "Bad Gateway");
         return -1;
     }
+    printf("[WEB-PROXY] Connected to wsssht\n");
 
     // SSL setup if needed
     SSL_CTX *ssl_ctx = NULL;
     SSL *tunnel_ssl = NULL;
     if (use_ssl) {
+        printf("[WEB-PROXY] Setting up SSL connection\n");
         ssl_ctx = create_ssl_context();
         if (!ssl_ctx) {
+            printf("[WEB-PROXY] Failed to create SSL context\n");
             if (strcmp(service_type, "web") == 0) {
                 use_ssl = false; // Fallback to HTTP
+                printf("[WEB-PROXY] Falling back to plain TCP\n");
             } else {
                 close(tunnel_fd);
                 send_http_error(client_fd, 502, "Bad Gateway");
@@ -498,14 +507,18 @@ static int handle_proxy_request(int client_fd, wssshd_state_t *state, const wsss
         } else {
             tunnel_ssl = create_ssl_connection(ssl_ctx, tunnel_fd, 0);
             if (!tunnel_ssl) {
+                printf("[WEB-PROXY] SSL connection failed\n");
                 SSL_CTX_free(ssl_ctx);
                 if (strcmp(service_type, "web") == 0) {
                     use_ssl = false; // Fallback to HTTP
+                    printf("[WEB-PROXY] Falling back to plain TCP\n");
                 } else {
                     close(tunnel_fd);
                     send_http_error(client_fd, 502, "Bad Gateway");
                     return -1;
                 }
+            } else {
+                printf("[WEB-PROXY] SSL connection established\n");
             }
         }
     }