fixing the ssl part. closed connection was not detected.

Changelog

@@ -1,3 +1,8 @@
+2026-03-17:
+- ssl: somehow ssl is not showing a closed TCP stream.
+  if the tcp stream closes, we get do not get any error and no data.
+  ret = SSL_read(ssl, buffer, len); will just return 0
+
 2026-03-13:
 - json could not handle double types.
 

ssl.cc

@@ -280,10 +280,11 @@ long int SSLSocket::Read (char *buffer, long int len) {
 		if (ret == -1) sslerror = SSL_get_error(ssl, -1);
 	} while (ret == -1 && TimeoutTime() < timeout &&
 			(sslerror == SSL_ERROR_WANT_READ || sslerror == SSL_ERROR_WANT_WRITE));
+
+	if (ret == 0 && sslerror == 0) return -1;
 	if (ret == -1 && 
 		(sslerror == SSL_ERROR_WANT_READ || sslerror == SSL_ERROR_WANT_WRITE))
 			ret = 0;
-
 	return ret;
 };
 

webserver.cc

@@ -30,6 +30,7 @@ WebServerClient::~WebServerClient () {
 /// @param _ssl_cert 
 /// @return 
 int WebServerClient::Accept (TCP *socket, std::string _ssl_key, std::string _ssl_cert) {
+    debug ("");
     if (ssl) delete ssl;
     ssl = NULL;
     if (tcp) delete tcp;
@@ -51,6 +52,7 @@ int WebServerClient::Accept (TCP *socket, std::string _ssl_key, std::string _ssl
 /// @param socket 
 /// @return 
 int WebServerClient::Accept (TCP *socket) {
+    debug ("");
     if (ssl) delete ssl;
     ssl = NULL;
     if (tcp) delete tcp;
@@ -74,6 +76,7 @@ WebRequestBuffer *WebServerClient::Loop () {
     else {
         len = tcp->ReadTimeout(buffer, WEB_READ_BUFFER_SIZE, 20);
     }
+    if (len != 0) debug ("len: %d", len);
     if (len < 0) return NULL;
     if (len == 0) return &ReqBuffer;
     ReqBuffer.AddBuffer (buffer, len);
@@ -450,7 +453,7 @@ int WebServer::Loop() {
     }
 
     if (tcpclient) {
-
+        debug ("new connection  ssl_enabled:%d", ssl_enabled);
         if (webclients.size() > conf_maxclients) {
             printf ("max connections reached. closing connection.\n");
             tcpclient->Close();
@@ -481,8 +484,11 @@ int WebServer::Loop() {
 
         reqbuffer = webclient->Loop();
         if (reqbuffer == NULL) {
+            debug ("remove client");
             // error on loop, remove and delete webclient.
+            debug ("count webclients:%d", webclients.size());
             webclients.remove(webclient);
+            debug ("count webclients:%d", webclients.size());
             delete webclient;
             wci = webclients.begin();
             if (wci == webclients.end()) break;