busybox-w32/networking, branch zstd

Merge branch 'busybox' into merge

2026-03-11T10:14:49+00:00

*: don't use getservbyname, it links in a static buffer

2026-02-25T01:35:32+00:00

function old new delta bb_get_servport_by_name - 348 +348 bb_lookup_port 83 111 +28 reread_config_file 886 907 +21 static.se 16 - -16 getservbyname 53 - -53 getservbyname_r 284 - -284 ------------------------------------------------------------------------------ (add/remove: 2/5 grow/shrink: 2/0 up/down: 397/-353) Total: 44 bytes text data bss dec hex filename 1080084 555 5024 1085663 1090df busybox_old 1080144 555 4992 1085691 1090fb busybox_unstripped Signed-off-by: Denys Vlasenko

telnet: fix false positive "Error writing to foreign host"

2026-02-24T22:47:52+00:00

function old new delta write_to_net 620 625 +5 Signed-off-by: Denys Vlasenko

netstat: fix breakage due to last commit

2026-02-24T22:11:21+00:00

function old new delta bb_get_servname_by_port 182 195 +13 ip_port_str 121 120 -1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/1 up/down: 13/-1) Total: 12 bytes Signed-off-by: Denys Vlasenko

netstat,pscan: don't use getservbyport(), it links in a static buffer

2026-02-24T21:42:30+00:00

function old new delta bb_get_servname_by_port - 182 +182 ip_port_str 112 121 +9 pscan_main 594 591 -3 getservbyport 53 - -53 getservbyport_r 430 - -430 ------------------------------------------------------------------------------ (add/remove: 2/4 grow/shrink: 1/1 up/down: 191/-486) Total: -295 bytes text data bss dec hex filename 1080362 555 5056 1085973 109215 busybox_old 1080067 555 5024 1085646 1090ce busybox_unstripped Signed-off-by: Denys Vlasenko

telnet: fixes after testing against some MUD servers

2026-02-24T06:16:16+00:00

A few size tests were not tight enough. More importantly, the logic "is this a telnet server?" made more robust. TTYPE seems to be understood by the MUD server I tried, for some reason NAWS is not? function old new delta packed_usage 36040 36078 +38 write_to_net 598 620 +22 telnet_main 455 462 +7 handle_SIGWINCH 15 21 +6 read_from_net 534 539 +5 show_menu 212 203 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 5/1 up/down: 78/-9) Total: 69 bytes Signed-off-by: Denys Vlasenko

telnetd: if vfork in make_new_session() fails, do close socket.

2026-02-23T23:03:20+00:00

function old new delta telnetd_main 372 385 +13 make_new_session 550 552 +2 xgetpty 81 78 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 15/-3) Total: 12 bytes Signed-off-by: Denys Vlasenko

telnet: code shrink

2026-02-23T14:42:43+00:00

function old new delta write_to_stdout 105 113 +8 put_iac 28 35 +7 write_to_net 596 598 +2 read_from_stdin 227 229 +2 read_from_net 543 534 -9 telnet_main 476 455 -21 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/2 up/down: 19/-30) Total: -11 bytes Signed-off-by: Denys Vlasenko

telnet: rewrite to use ioloop()

2026-02-23T13:47:17+00:00

Now should never block on network I/O. Also, window resizing is dynamic now. function old new delta write_to_net - 596 +596 read_from_net - 543 +543 read_from_stdin - 227 +227 show_menu - 212 +212 write_to_stdout - 105 +105 have_data_to_write_to_net - 72 +72 have_data_to_write_to_stdout - 38 +38 put_iac_byte_escaped - 32 +32 ioloop_run 411 438 +27 have_buffer_to_read_from_stdin - 25 +25 have_buffer_to_read_from_net - 25 +25 .rodata 107125 107141 +16 handle_SIGWINCH - 15 +15 put_iac 36 28 -8 put_iac4_msb_lsb 19 - -19 iac_flush 36 - -36 setConMode 87 - -87 handle_net_output 110 - -110 con_escape 271 - -271 telnet_main 1232 476 -756 ------------------------------------------------------------------------------ (add/remove: 11/5 grow/shrink: 2/2 up/down: 1933/-1287) Total: 646 bytes Signed-off-by: Denys Vlasenko

telnetd: do not wait for more input after 10-byte NAWS is received

2026-02-22T20:20:59+00:00

If the the screen is resized to 255 columns without any subsequent data received, the server won't parse and react to the NAWS (until eventually at least one more byte arrives). function old new delta read_byte_unescaping_IAC 28 31 +3 net_to_pty__have_data_to_write 551 552 +1 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 4/0) Total: 4 bytes Signed-off-by: Denys Vlasenko