I run it under gdb, something like this: $ nc -vv -k -p 1234
(yes, the -l option isn't needed, var cnt_l is set to 2). Then I start a client: $ echo foo | nc -w1 localhost 1234 I see the server shows the 'foo'. I try to send another one: $ echo bar | nc -w1 localhost 1234 But that fails, and I notice the server got stuck. ^C it, and: (gdb) bt full #0 0x00007ffff7b11f03 in __select_nocancel () at ../sysdeps/unix/syscall-template.S:81 No locals. #1 0x0000000000402b25 in readwrite () at networking/nc_bloaty.c:626 wretry = 8200 rr = <optimized out> zp = 0x0 np = 0x608124 "" rzleft = 0 rnleft = 0 netretry = 2 fds_open = 1 ding1 = {fds_bits = {1, 0 <repeats 15 times>}} ding2 = {fds_bits = {1, 0 <repeats 15 times>}} #2 0x000000000040316a in nc_main (argc=<optimized out>, argv=0x7fffffffe568) at networking/nc_bloaty.c:914 str_p = 0x7fffffffe914 "1234" str_s = 0x0 str_i = 0x7fffffffe8f4 "busybox_unstripped" str_o = 0x7ffff7de9f0c <_dl_fixup+508> "\017\037@" themdotted = <optimized out> proggie = 0x0 x = <optimized out> cnt_l = 2 o_lport = <optimized out> #3 0x00000000004019f4 in run_applet_no_and_exit (applet_no=0, argv=argv@entry=0x7fffffffe540) at libbb/appletlib.c:772 argc = 5 #4 0x0000000000401a1b in run_applet_and_exit (name=0x7fffffffe907 "nc", argv=argv@entry=0x7fffffffe540) at libbb/appletlib.c:779 applet = <optimized out> #5 0x0000000000401b86 in busybox_main (argv=0x7fffffffe540) at libbb/appletlib.c:731 No locals. #6 run_applet_and_exit (name=<optimized out>, argv=argv@entry=0x7fffffffe538) at libbb/appletlib.c:781 applet = <optimized out> #7 0x0000000000401c11 in main (argc=<optimized out>, argv=0x7fffffffe538) at libbb/appletlib.c:836 No locals. .config is: CONFIG_HAVE_DOT_CONFIG=y CONFIG_PLATFORM_LINUX=y CONFIG_FEATURE_BUFFERS_USE_MALLOC=y CONFIG_SHOW_USAGE=y CONFIG_FEATURE_VERBOSE_USAGE=y CONFIG_FEATURE_COMPRESS_USAGE=y CONFIG_SUBST_WCHAR=0 CONFIG_LAST_SUPPORTED_WCHAR=0 CONFIG_LONG_OPTS=y CONFIG_PID_FILE_PATH="" CONFIG_BUSYBOX_EXEC_PATH="/proc/self/exe" CONFIG_CROSS_COMPILER_PREFIX="" CONFIG_SYSROOT="" CONFIG_EXTRA_CFLAGS="-g3" CONFIG_EXTRA_LDFLAGS="" CONFIG_EXTRA_LDLIBS="" CONFIG_NO_DEBUG_LIB=y CONFIG_INSTALL_APPLET_SYMLINKS=y CONFIG_PREFIX="./_install" CONFIG_PASSWORD_MINLEN=6 CONFIG_MD5_SMALL=1 CONFIG_SHA3_SMALL=1 CONFIG_FEATURE_EDITING_MAX_LEN=0 CONFIG_FEATURE_EDITING_HISTORY=0 CONFIG_FEATURE_COPYBUF_KB=4 CONFIG_GZIP_FAST=0 CONFIG_DEFAULT_SETFONT_DIR="" CONFIG_FEATURE_VI_MAX_LEN=0 CONFIG_FEATURE_VI_UNDO_QUEUE_MAX=0 CONFIG_TELINIT_PATH="" CONFIG_FEATURE_KILL_DELAY=0 CONFIG_INIT_TERMINAL_TYPE="" CONFIG_LAST_ID=0 CONFIG_FIRST_SYSTEM_ID=0 CONFIG_LAST_SYSTEM_ID=0 CONFIG_FEATURE_DEFAULT_PASSWD_ALGO="" CONFIG_DEFAULT_MODULES_DIR="" CONFIG_DEFAULT_DEPMOD_FILE="" CONFIG_FEATURE_CROND_DIR="" CONFIG_FEATURE_LESS_MAXLINES=0 CONFIG_FEATURE_BEEP_FREQ=0 CONFIG_FEATURE_BEEP_LENGTH_MS=0 CONFIG_NC=y CONFIG_NC_SERVER=y CONFIG_NC_EXTRA=y CONFIG_NC_110_COMPAT=y CONFIG_IFUPDOWN_IFSTATE_PATH="" CONFIG_PSCAN=y CONFIG_DHCPD_LEASES_FILE="" CONFIG_UDHCP_DEBUG=0 CONFIG_UDHCPC_DEFAULT_SCRIPT="" CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS=0 CONFIG_IFUPDOWN_UDHCPC_CMD_OPTIONS="" CONFIG_FEATURE_MIME_CHARSET="" CONFIG_SV_DEFAULT_SERVICE_DIR="" CONFIG_FEATURE_SH_IS_NONE=y CONFIG_FEATURE_BASH_IS_NONE=y CONFIG_FEATURE_SYSLOGD_READ_BUFFER_SIZE=0 CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE=0 Cheers, -- Cristian _______________________________________________ busybox mailing list busybox@busybox.net http://lists.busybox.net/mailman/listinfo/busybox