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opt
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golang
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1.19.4
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src
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net
Server IP: 191.96.63.230
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Size
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..
-
12/01/2022 06:13:58 PM
rwxr-xr-x
📄
addrselect.go
9.44 KB
12/01/2022 06:12:59 PM
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📄
addrselect_test.go
6.22 KB
12/01/2022 06:12:59 PM
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cgo_aix.go
582 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
cgo_android.go
272 bytes
12/01/2022 06:12:59 PM
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cgo_bsd.go
353 bytes
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_linux.go
642 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
cgo_netbsd.go
276 bytes
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_openbsd.go
276 bytes
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_resnew.go
590 bytes
12/01/2022 06:12:59 PM
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cgo_resold.go
579 bytes
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_socknew.go
753 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
cgo_sockold.go
852 bytes
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_solaris.go
343 bytes
12/01/2022 06:12:59 PM
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cgo_stub.go
1.03 KB
12/01/2022 06:12:59 PM
rw-r--r--
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cgo_unix.go
9.49 KB
12/01/2022 06:12:59 PM
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📄
cgo_unix_test.go
1.84 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
cgo_windows.go
402 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
conf.go
9.65 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
conf_netcgo.go
370 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
conf_test.go
9.7 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
conn_test.go
1.73 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dial.go
22.73 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dial_test.go
26.1 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dial_unix_test.go
2.77 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsclient.go
5.57 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsclient_test.go
1.51 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsclient_unix.go
22.72 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsclient_unix_test.go
57.08 KB
12/01/2022 06:12:59 PM
rw-r--r--
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dnsconfig.go
1.61 KB
12/01/2022 06:12:59 PM
rw-r--r--
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dnsconfig_unix.go
4.01 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsconfig_unix_test.go
6.69 KB
12/01/2022 06:12:59 PM
rw-r--r--
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dnsconfig_windows.go
1.42 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
dnsname_test.go
1.98 KB
12/01/2022 06:12:59 PM
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📄
error_plan9.go
224 bytes
12/01/2022 06:12:59 PM
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📄
error_plan9_test.go
476 bytes
12/01/2022 06:12:59 PM
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📄
error_posix.go
542 bytes
12/01/2022 06:12:59 PM
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📄
error_posix_test.go
981 bytes
12/01/2022 06:12:59 PM
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📄
error_test.go
19.72 KB
12/01/2022 06:12:59 PM
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error_unix.go
372 bytes
12/01/2022 06:12:59 PM
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📄
error_unix_test.go
762 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
error_windows.go
355 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
error_windows_test.go
796 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
example_test.go
8.45 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
external_test.go
4.07 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
fcntl_libc_test.go
374 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
fcntl_syscall_test.go
496 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
fd_plan9.go
3.56 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
fd_posix.go
4.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
fd_unix.go
5.37 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
fd_windows.go
4.62 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
file.go
1.69 KB
12/01/2022 06:12:59 PM
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📄
file_plan9.go
2.68 KB
12/01/2022 06:12:59 PM
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file_stub.go
489 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
file_test.go
6.38 KB
12/01/2022 06:12:59 PM
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📄
file_unix.go
2.46 KB
12/01/2022 06:12:59 PM
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📄
file_windows.go
521 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
hook.go
628 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
hook_plan9.go
283 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
hook_unix.go
690 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
hook_windows.go
875 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
hosts.go
3.02 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
hosts_test.go
4.58 KB
12/01/2022 06:12:59 PM
rw-r--r--
📁
http
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12/01/2022 06:13:56 PM
rwxr-xr-x
📄
interface.go
7.17 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_aix.go
4.4 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_bsd.go
2.76 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_bsd_test.go
1.44 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_bsdvar.go
718 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_darwin.go
1.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_freebsd.go
1.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_linux.go
6.9 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_linux_test.go
3.65 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_plan9.go
4.68 KB
12/01/2022 06:12:59 PM
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📄
interface_solaris.go
2.07 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_stub.go
812 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_test.go
9.67 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_unix_test.go
4.73 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
interface_windows.go
5.41 KB
12/01/2022 06:12:59 PM
rw-r--r--
📁
internal
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
ip.go
17.72 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
ip_test.go
25.33 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
iprawsock.go
7.08 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
iprawsock_plan9.go
874 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
iprawsock_posix.go
3.41 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
iprawsock_test.go
5.62 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
ipsock.go
8.97 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
ipsock_plan9.go
7.5 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
ipsock_plan9_test.go
645 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
ipsock_posix.go
7.66 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
ipsock_test.go
6.81 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
listen_test.go
20.51 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup.go
27.82 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_fake.go
1.64 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_plan9.go
8.86 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_test.go
35.13 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_unix.go
4.46 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_windows.go
12.53 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
lookup_windows_test.go
8.5 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
mac.go
1.88 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
mac_test.go
3.26 KB
12/01/2022 06:12:59 PM
rw-r--r--
📁
mail
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
main_cloexec_test.go
693 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_conf_test.go
922 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_noconf_test.go
505 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_plan9_test.go
392 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_posix_test.go
1.38 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_test.go
7.08 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_unix_test.go
1.19 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
main_windows_test.go
1.08 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
mockserver_test.go
10.79 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
net.go
23.25 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
net_fake.go
6.59 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
net_test.go
13.88 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
net_windows_test.go
16.28 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
netgo.go
427 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
netgo_unix_test.go
656 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📁
netip
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
nss.go
3.64 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
nss_test.go
3.35 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
packetconn_test.go
3.03 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
parse.go
7.06 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
parse_test.go
1.46 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
pipe.go
5.43 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
pipe_test.go
1.2 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
platform_test.go
4.57 KB
12/01/2022 06:12:59 PM
rw-r--r--
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port.go
1.46 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
port_test.go
1.34 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
port_unix.go
1.24 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
protoconn_test.go
7.19 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
rawconn.go
1.89 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
rawconn_stub_test.go
631 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
rawconn_test.go
4.32 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
rawconn_unix_test.go
2.96 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
rawconn_windows_test.go
3.12 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
resolverdialfunc_test.go
8.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📁
rpc
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
sendfile_linux.go
1.1 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sendfile_stub.go
344 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sendfile_test.go
6.72 KB
12/01/2022 06:12:59 PM
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sendfile_unix_alt.go
2.01 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sendfile_windows.go
1.02 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
server_test.go
11.01 KB
12/01/2022 06:12:59 PM
rw-r--r--
📁
smtp
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
sock_bsd.go
918 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_cloexec.go
741 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_linux.go
1.53 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_linux_test.go
545 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_plan9.go
262 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_posix.go
6.78 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_stub.go
390 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sock_windows.go
1.16 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockaddr_posix.go
914 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_aix.go
1.43 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_bsd.go
2.21 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_linux.go
1.25 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_plan9.go
406 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_posix.go
2.62 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_solaris.go
1.25 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_stub.go
742 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockopt_windows.go
1.51 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockoptip_bsdvar.go
867 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockoptip_linux.go
735 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockoptip_posix.go
1.38 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockoptip_stub.go
767 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
sockoptip_windows.go
819 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
splice_linux.go
1.09 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
splice_stub.go
287 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
splice_test.go
10.05 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
sys_cloexec.go
962 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsock.go
10.61 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsock_plan9.go
2.21 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsock_posix.go
5.31 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsock_test.go
17.32 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsock_unix_test.go
2.35 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_darwin.go
770 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_dragonfly.go
698 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_openbsd.go
365 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_plan9.go
525 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_posix.go
442 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_solaris.go
1.15 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_stub.go
397 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_unix.go
722 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
tcpsockopt_windows.go
741 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📁
testdata
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📁
textproto
-
12/01/2022 06:13:56 PM
rwxr-xr-x
📄
timeout_test.go
28.56 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
udpsock.go
11.83 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
udpsock_plan9.go
4.64 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
udpsock_plan9_test.go
1.31 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
udpsock_posix.go
6.78 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
udpsock_test.go
16.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock.go
10.17 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_linux_test.go
2.29 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_plan9.go
1.24 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_posix.go
5.87 KB
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_readmsg_cloexec.go
654 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_readmsg_cmsg_cloexec.go
332 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_readmsg_other.go
275 bytes
12/01/2022 06:12:59 PM
rw-r--r--
📄
unixsock_readmsg_test.go
2.48 KB
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unixsock_test.go
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unixsock_windows_test.go
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write_unix_test.go
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writev_test.go
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writev_unix.go
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Editing: tcpsock.go
Close
// Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package net import ( "context" "internal/itoa" "io" "net/netip" "os" "syscall" "time" ) // BUG(mikio): On JS and Windows, the File method of TCPConn and // TCPListener is not implemented. // TCPAddr represents the address of a TCP end point. type TCPAddr struct { IP IP Port int Zone string // IPv6 scoped addressing zone } // AddrPort returns the TCPAddr a as a netip.AddrPort. // // If a.Port does not fit in a uint16, it's silently truncated. // // If a is nil, a zero value is returned. func (a *TCPAddr) AddrPort() netip.AddrPort { if a == nil { return netip.AddrPort{} } na, _ := netip.AddrFromSlice(a.IP) na = na.WithZone(a.Zone) return netip.AddrPortFrom(na, uint16(a.Port)) } // Network returns the address's network name, "tcp". func (a *TCPAddr) Network() string { return "tcp" } func (a *TCPAddr) String() string { if a == nil { return "<nil>" } ip := ipEmptyString(a.IP) if a.Zone != "" { return JoinHostPort(ip+"%"+a.Zone, itoa.Itoa(a.Port)) } return JoinHostPort(ip, itoa.Itoa(a.Port)) } func (a *TCPAddr) isWildcard() bool { if a == nil || a.IP == nil { return true } return a.IP.IsUnspecified() } func (a *TCPAddr) opAddr() Addr { if a == nil { return nil } return a } // ResolveTCPAddr returns an address of TCP end point. // // The network must be a TCP network name. // // If the host in the address parameter is not a literal IP address or // the port is not a literal port number, ResolveTCPAddr resolves the // address to an address of TCP end point. // Otherwise, it parses the address as a pair of literal IP address // and port number. // The address parameter can use a host name, but this is not // recommended, because it will return at most one of the host name's // IP addresses. // // See func Dial for a description of the network and address // parameters. func ResolveTCPAddr(network, address string) (*TCPAddr, error) { switch network { case "tcp", "tcp4", "tcp6": case "": // a hint wildcard for Go 1.0 undocumented behavior network = "tcp" default: return nil, UnknownNetworkError(network) } addrs, err := DefaultResolver.internetAddrList(context.Background(), network, address) if err != nil { return nil, err } return addrs.forResolve(network, address).(*TCPAddr), nil } // TCPAddrFromAddrPort returns addr as a TCPAddr. If addr.IsValid() is false, // then the returned TCPAddr will contain a nil IP field, indicating an // address family-agnostic unspecified address. func TCPAddrFromAddrPort(addr netip.AddrPort) *TCPAddr { return &TCPAddr{ IP: addr.Addr().AsSlice(), Zone: addr.Addr().Zone(), Port: int(addr.Port()), } } // TCPConn is an implementation of the Conn interface for TCP network // connections. type TCPConn struct { conn } // SyscallConn returns a raw network connection. // This implements the syscall.Conn interface. func (c *TCPConn) SyscallConn() (syscall.RawConn, error) { if !c.ok() { return nil, syscall.EINVAL } return newRawConn(c.fd) } // ReadFrom implements the io.ReaderFrom ReadFrom method. func (c *TCPConn) ReadFrom(r io.Reader) (int64, error) { if !c.ok() { return 0, syscall.EINVAL } n, err := c.readFrom(r) if err != nil && err != io.EOF { err = &OpError{Op: "readfrom", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return n, err } // CloseRead shuts down the reading side of the TCP connection. // Most callers should just use Close. func (c *TCPConn) CloseRead() error { if !c.ok() { return syscall.EINVAL } if err := c.fd.closeRead(); err != nil { return &OpError{Op: "close", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } // CloseWrite shuts down the writing side of the TCP connection. // Most callers should just use Close. func (c *TCPConn) CloseWrite() error { if !c.ok() { return syscall.EINVAL } if err := c.fd.closeWrite(); err != nil { return &OpError{Op: "close", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } // SetLinger sets the behavior of Close on a connection which still // has data waiting to be sent or to be acknowledged. // // If sec < 0 (the default), the operating system finishes sending the // data in the background. // // If sec == 0, the operating system discards any unsent or // unacknowledged data. // // If sec > 0, the data is sent in the background as with sec < 0. On // some operating systems after sec seconds have elapsed any remaining // unsent data may be discarded. func (c *TCPConn) SetLinger(sec int) error { if !c.ok() { return syscall.EINVAL } if err := setLinger(c.fd, sec); err != nil { return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } // SetKeepAlive sets whether the operating system should send // keep-alive messages on the connection. func (c *TCPConn) SetKeepAlive(keepalive bool) error { if !c.ok() { return syscall.EINVAL } if err := setKeepAlive(c.fd, keepalive); err != nil { return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } // SetKeepAlivePeriod sets period between keep-alives. func (c *TCPConn) SetKeepAlivePeriod(d time.Duration) error { if !c.ok() { return syscall.EINVAL } if err := setKeepAlivePeriod(c.fd, d); err != nil { return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } // SetNoDelay controls whether the operating system should delay // packet transmission in hopes of sending fewer packets (Nagle's // algorithm). The default is true (no delay), meaning that data is // sent as soon as possible after a Write. func (c *TCPConn) SetNoDelay(noDelay bool) error { if !c.ok() { return syscall.EINVAL } if err := setNoDelay(c.fd, noDelay); err != nil { return &OpError{Op: "set", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err} } return nil } func newTCPConn(fd *netFD) *TCPConn { c := &TCPConn{conn{fd}} setNoDelay(c.fd, true) return c } // DialTCP acts like Dial for TCP networks. // // The network must be a TCP network name; see func Dial for details. // // If laddr is nil, a local address is automatically chosen. // If the IP field of raddr is nil or an unspecified IP address, the // local system is assumed. func DialTCP(network string, laddr, raddr *TCPAddr) (*TCPConn, error) { switch network { case "tcp", "tcp4", "tcp6": default: return nil, &OpError{Op: "dial", Net: network, Source: laddr.opAddr(), Addr: raddr.opAddr(), Err: UnknownNetworkError(network)} } if raddr == nil { return nil, &OpError{Op: "dial", Net: network, Source: laddr.opAddr(), Addr: nil, Err: errMissingAddress} } sd := &sysDialer{network: network, address: raddr.String()} c, err := sd.dialTCP(context.Background(), laddr, raddr) if err != nil { return nil, &OpError{Op: "dial", Net: network, Source: laddr.opAddr(), Addr: raddr.opAddr(), Err: err} } return c, nil } // TCPListener is a TCP network listener. Clients should typically // use variables of type Listener instead of assuming TCP. type TCPListener struct { fd *netFD lc ListenConfig } // SyscallConn returns a raw network connection. // This implements the syscall.Conn interface. // // The returned RawConn only supports calling Control. Read and // Write return an error. func (l *TCPListener) SyscallConn() (syscall.RawConn, error) { if !l.ok() { return nil, syscall.EINVAL } return newRawListener(l.fd) } // AcceptTCP accepts the next incoming call and returns the new // connection. func (l *TCPListener) AcceptTCP() (*TCPConn, error) { if !l.ok() { return nil, syscall.EINVAL } c, err := l.accept() if err != nil { return nil, &OpError{Op: "accept", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err} } return c, nil } // Accept implements the Accept method in the Listener interface; it // waits for the next call and returns a generic Conn. func (l *TCPListener) Accept() (Conn, error) { if !l.ok() { return nil, syscall.EINVAL } c, err := l.accept() if err != nil { return nil, &OpError{Op: "accept", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err} } return c, nil } // Close stops listening on the TCP address. // Already Accepted connections are not closed. func (l *TCPListener) Close() error { if !l.ok() { return syscall.EINVAL } if err := l.close(); err != nil { return &OpError{Op: "close", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err} } return nil } // Addr returns the listener's network address, a *TCPAddr. // The Addr returned is shared by all invocations of Addr, so // do not modify it. func (l *TCPListener) Addr() Addr { return l.fd.laddr } // SetDeadline sets the deadline associated with the listener. // A zero time value disables the deadline. func (l *TCPListener) SetDeadline(t time.Time) error { if !l.ok() { return syscall.EINVAL } if err := l.fd.pfd.SetDeadline(t); err != nil { return &OpError{Op: "set", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err} } return nil } // File returns a copy of the underlying os.File. // It is the caller's responsibility to close f when finished. // Closing l does not affect f, and closing f does not affect l. // // The returned os.File's file descriptor is different from the // connection's. Attempting to change properties of the original // using this duplicate may or may not have the desired effect. func (l *TCPListener) File() (f *os.File, err error) { if !l.ok() { return nil, syscall.EINVAL } f, err = l.file() if err != nil { return nil, &OpError{Op: "file", Net: l.fd.net, Source: nil, Addr: l.fd.laddr, Err: err} } return } // ListenTCP acts like Listen for TCP networks. // // The network must be a TCP network name; see func Dial for details. // // If the IP field of laddr is nil or an unspecified IP address, // ListenTCP listens on all available unicast and anycast IP addresses // of the local system. // If the Port field of laddr is 0, a port number is automatically // chosen. func ListenTCP(network string, laddr *TCPAddr) (*TCPListener, error) { switch network { case "tcp", "tcp4", "tcp6": default: return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: UnknownNetworkError(network)} } if laddr == nil { laddr = &TCPAddr{} } sl := &sysListener{network: network, address: laddr.String()} ln, err := sl.listenTCP(context.Background(), laddr) if err != nil { return nil, &OpError{Op: "listen", Net: network, Source: nil, Addr: laddr.opAddr(), Err: err} } return ln, nil } // roundDurationUp rounds d to the next multiple of to. func roundDurationUp(d time.Duration, to time.Duration) time.Duration { return (d + to - 1) / to }