--- lbbs/src/screen.c	2025/05/10 13:17:36	1.42
+++ lbbs/src/screen.c	2025/05/15 05:14:57	1.49
@@ -98,7 +98,7 @@ void set_input_echo(int echo)
 		prints("\xff\xfb\x01\xff\xfb\x03");
 		iflush();
 		igetch(0);
-		igetch(1);
+		igetch_reset();
 	}
 }
 
@@ -112,22 +112,26 @@ static int _str_input(char *buffer, int
 	for (offset = 0; offset < buf_size - 1 && buffer[offset] != '\0'; offset++)
 		;
 
-	while ((c = igetch_t(MIN(MAX_DELAY_TIME, 60))))
+	igetch_reset();
+
+	while (!SYS_server_exit)
 	{
+		c = igetch_t(MIN(MAX_DELAY_TIME, 60));
+
 		if (c == CR)
 		{
-			igetch(1); // Cleanup remaining '\n' in the buffer
+			igetch_reset();
 			break;
 		}
-		if (c == KEY_TIMEOUT)
+		else if (c == KEY_TIMEOUT || c == KEY_NULL) // timeout or broken pipe
 		{
 			return -1;
 		}
-		if (c == KEY_NULL || c == LF)
+		else if (c == LF || c == '\0')
 		{
 			continue;
 		}
-		if (c == BACKSPACE)
+		else if (c == BACKSPACE)
 		{
 			if (offset > 0)
 			{
@@ -148,29 +152,32 @@ static int _str_input(char *buffer, int
 			}
 			continue;
 		}
-		if (c > 255 || iscntrl(c))
+		else if (c > 255 || iscntrl(c))
 		{
 			continue;
 		}
-		if (c > 127 && c <= 255)
+		else if (c > 127 && c <= 255)
 		{
 			if (!hz && offset + 2 > buf_size - 1) // No enough space for Chinese character
 			{
-				igetch(1); // Cleanup remaining input
+				igetch(0); // Ignore 1 character
 				outc('\a');
 				iflush();
 				continue;
 			}
 			hz = (!hz);
 		}
+
 		if (offset + 1 > buf_size - 1)
 		{
 			outc('\a');
 			iflush();
 			continue;
 		}
+
 		buffer[offset++] = (char)c;
 		buffer[offset] = '\0';
+
 		switch (echo_mode)
 		{
 		case DOECHO:
@@ -207,8 +214,6 @@ int get_data(int row, int col, char *pro
 {
 	int len;
 
-	igetch(1); // Cleanup input buffer
-
 	moveto(row, col);
 	prints(prompt);
 	prints(buffer);
@@ -275,7 +280,7 @@ int display_file_ex(const char *filename
 	line = begin_line;
 	max_lines = screen_rows - 1;
 
-	while (loop)
+	while (!SYS_server_exit && loop)
 	{
 		if (c_line_current >= c_line_total && c_line_total <= screen_rows - 2)
 		{
@@ -310,7 +315,7 @@ int display_file_ex(const char *filename
 			iflush();
 
 			input_ok = 0;
-			while (!input_ok)
+			while (!SYS_server_exit && !input_ok)
 			{
 				ch = igetch_t(MAX_DELAY_TIME);
 				input_ok = 1;
@@ -330,8 +335,9 @@ int display_file_ex(const char *filename
 					// prints("\033[T"); // Scroll down 1 line
 					max_lines = screen_rows - 1; // Legacy Fterm only works with this line
 					break;
-				case KEY_DOWN:
 				case CR:
+					igetch_reset();
+				case KEY_DOWN:
 					if (c_line_current + ((screen_rows - 2) - (line - 1)) >= c_line_total) // Reach bottom
 					{
 						break;