diff --git a/src/core/windows/http.c b/src/core/windows/http.c
index c80821e..a206359 100644
--- a/src/core/windows/http.c
+++ b/src/core/windows/http.c
@@ -57,7 +57,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	wchar_t wHostname[4096];
 	wchar_t wPath[4096];
 
-	lib3270_trace_event(hSession,"Getting data from %s",url);
+	lib3270_write_nettrace(hSession,"Getting data from %s\n",url);
 
 	{
 		// Strip URL
@@ -87,11 +87,16 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	static const char * userAgent = PACKAGE_NAME "/" PACKAGE_VERSION;
 	wchar_t wUserAgent[256];
 	mbstowcs(wUserAgent, userAgent, strlen(userAgent)+1);
-	lib3270_autoptr(HINTERNET) httpSession = WinHttpOpen(wUserAgent, WINHTTP_ACCESS_TYPE_NO_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0 );
+
+	// https://docs.microsoft.com/en-us/windows/win32/api/winhttp/nf-winhttp-winhttpopen
+
+	/// @TODO Use WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY when available!
+	lib3270_autoptr(HINTERNET) httpSession = WinHttpOpen(wUserAgent, WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0 );
+
 	if(!httpSession)
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s",url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't open session for %s: %s\n",url, windows_error);
 
 		*error_message = _( "Can't open HTTP session" );
 		errno = EINVAL;
@@ -103,7 +108,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(!hConnect)
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't connect to %s: %s\n", url, windows_error);
 
 		*error_message = _( "Can't connect to HTTP server." );
 
@@ -115,7 +120,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(!hConnect)
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't open request for %s: %s\n", url, windows_error);
 
 		*error_message = _( "Can't create HTTP request." );
 
@@ -129,7 +134,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(!WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0))
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't send request for %s: %s\n", url, windows_error);
 
 		*error_message = _( "Can't send HTTP request." );
 
@@ -141,7 +146,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(!WinHttpReceiveResponse(hRequest, NULL))
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't receive response for %s: %s\n", url, windows_error);
 
 		*error_message = _( "Error receiving HTTP response." );
 
@@ -154,7 +159,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(!WinHttpQueryDataAvailable(hRequest, &szResponse))
 	{
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Error checking for available data after response to %s: %s\n", url, windows_error);
 
 		*error_message = _( "Empty response from HTTP server." );
 
@@ -170,7 +175,7 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 
 	if(!WinHttpReadData(hRequest,httpText,szResponse,&szResponse)){
 		lib3270_autoptr(char) windows_error = lib3270_win32_translate_error_code(GetLastError());
-		lib3270_write_log(hSession,"http","%s: %s", url, windows_error);
+		lib3270_write_nettrace(hSession,"Can't read response size for %s: %s\n", url, windows_error);
 
 		*error_message = _( "Can't read HTTP response size." );
 
@@ -183,6 +188,8 @@ char * lib3270_get_from_url(H3270 *hSession, const char *url, size_t *length, co
 	if(length)
 		*length = (size_t) szResponse;
 
+	lib3270_write_nettrace(hSession,"Got %u bytes from %s\n",(unsigned int) szResponse, url);
+
 	return httpText;
 
 }
diff --git a/src/ssl/crl.c b/src/ssl/crl.c
index 63bcdef..45054f2 100644
--- a/src/ssl/crl.c
+++ b/src/ssl/crl.c
@@ -144,6 +144,8 @@ int lib3270_crl_new_from_url(H3270 *hSession, void *ssl_error, const char *url)
 		return 0;
 	}
 
+	trace_ssl(hSession,"Can't get CRL using %s\n",url);
+
 	return -1;
 
 }
diff --git a/src/ssl/linux/getcrl.c b/src/ssl/linux/getcrl.c
index b9dd85a..99ec938 100644
--- a/src/ssl/linux/getcrl.c
+++ b/src/ssl/linux/getcrl.c
@@ -107,10 +107,18 @@ X509_CRL * lib3270_download_crl(H3270 *hSession, SSL_ERROR_MESSAGE * message, co
 		// Can't get CRL.
 
 		message->error = hSession->ssl.error = 0;
-		message->title = _( "Security error" );
-		message->text = _( "Unexpected or invalid CRL URL" );
-		message->description = _("The URL scheme is unknown");
-		lib3270_write_log(hSession,"ssl","%s: %s",consturl, message->description);
+
+		if(!(message->text && message->description))
+			message->title = _( "Security error" );
+
+		if(!message->text)
+			message->text = _( "Unexpected or invalid CRL URL" );
+
+		if(!message->description)
+			message->description = _("The URL scheme is unknown");
+
+		trace_ssl(hSession,"%s: The URL scheme is unknown",consturl);
+
 		errno = EINVAL;
 		return NULL;
 #endif // HAVE_LIBCURL
diff --git a/src/ssl/windows/getcrl.c b/src/ssl/windows/getcrl.c
index 2c9cb4c..f0558f0 100644
--- a/src/ssl/windows/getcrl.c
+++ b/src/ssl/windows/getcrl.c
@@ -113,10 +113,18 @@ X509_CRL * lib3270_download_crl(H3270 *hSession, SSL_ERROR_MESSAGE * message, co
 		// Can't get CRL.
 
 		message->error = hSession->ssl.error = 0;
-		message->title = _( "Security error" );
-		message->text = _( "Unexpected or invalid CRL URL" );
-		message->description = _("The URL scheme is unknown");
-		lib3270_write_log(hSession,"ssl","%s: %s",consturl, message->description);
+
+		if(!(message->text && message->description))
+			message->title = _( "Security error" );
+
+		if(!message->text)
+			message->text = _( "Unexpected or invalid CRL URL" );
+
+		if(!message->description)
+			message->description = _("The URL scheme is unknown");
+
+		trace_ssl(hSession,"%s: The URL scheme is unknown",consturl);
+
 		errno = EINVAL;
 		return NULL;
 
diff --git a/src/ssl/windows/http.c b/src/ssl/windows/http.c
index 76a8cbb..cb339ed 100644
--- a/src/ssl/windows/http.c
+++ b/src/ssl/windows/http.c
@@ -55,6 +55,11 @@ X509_CRL * get_crl_using_http(H3270 *hSession, SSL_ERROR_MESSAGE * message, cons
 	{
 		message->error = hSession->ssl.error = 0;
 		message->title = _( "Security error" );
+		trace_ssl(
+			hSession,"Can't get %s: %s\n",
+				consturl,
+				message->description ? message->description : "Undefined message"
+		);
 		return NULL;
 	}
 
@@ -68,9 +73,18 @@ X509_CRL * get_crl_using_http(H3270 *hSession, SSL_ERROR_MESSAGE * message, cons
 		message->title = _( "Security error" );
 		message->text = _( "Can't decode certificate revocation list" );
 		lib3270_write_log(hSession,"ssl","%s: %s",consturl, message->text);
+
+		trace_ssl(
+			hSession,"%s: %s\n",
+				consturl,
+				message->text
+		);
+
 		return NULL;
 	}
 
+	trace_ssl(hSession,"Got CRL from %s\n",consturl);
+
 	return x509_crl;
 
 }
diff --git a/src/ssl/windows/init.c b/src/ssl/windows/init.c
index 9609042..d9c8e0f 100644
--- a/src/ssl/windows/init.c
+++ b/src/ssl/windows/init.c
@@ -112,7 +112,7 @@ int ssl_ctx_init(H3270 *hSession, SSL_ERROR_MESSAGE * message)
 		message->title = N_( "Security error" );
 		message->text = N_( "Cant open custom certificate directory." );
 
-		trace_ssl(hSession, _( "Can't open \"%s\" (The Windows error code was %ld)" ), certpath, (long) GetLastError());
+		trace_ssl(hSession, _( "Can't open \"%s\" (The Windows error code was %ld)\n" ), certpath, (long) GetLastError());
 	}
 	else
 	{
--
libgit2 0.21.2