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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
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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: splice_test.go
Close
// Copyright 2018 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. //go:build linux package net import ( "io" "log" "os" "os/exec" "strconv" "sync" "testing" "time" ) func TestSplice(t *testing.T) { t.Run("tcp-to-tcp", func(t *testing.T) { testSplice(t, "tcp", "tcp") }) if !testableNetwork("unixgram") { t.Skip("skipping unix-to-tcp tests") } t.Run("unix-to-tcp", func(t *testing.T) { testSplice(t, "unix", "tcp") }) t.Run("no-unixpacket", testSpliceNoUnixpacket) t.Run("no-unixgram", testSpliceNoUnixgram) } func testSplice(t *testing.T, upNet, downNet string) { t.Run("simple", spliceTestCase{upNet, downNet, 128, 128, 0}.test) t.Run("multipleWrite", spliceTestCase{upNet, downNet, 4096, 1 << 20, 0}.test) t.Run("big", spliceTestCase{upNet, downNet, 5 << 20, 1 << 30, 0}.test) t.Run("honorsLimitedReader", spliceTestCase{upNet, downNet, 4096, 1 << 20, 1 << 10}.test) t.Run("updatesLimitedReaderN", spliceTestCase{upNet, downNet, 1024, 4096, 4096 + 100}.test) t.Run("limitedReaderAtLimit", spliceTestCase{upNet, downNet, 32, 128, 128}.test) t.Run("readerAtEOF", func(t *testing.T) { testSpliceReaderAtEOF(t, upNet, downNet) }) t.Run("issue25985", func(t *testing.T) { testSpliceIssue25985(t, upNet, downNet) }) } type spliceTestCase struct { upNet, downNet string chunkSize, totalSize int limitReadSize int } func (tc spliceTestCase) test(t *testing.T) { clientUp, serverUp := spliceTestSocketPair(t, tc.upNet) defer serverUp.Close() cleanup, err := startSpliceClient(clientUp, "w", tc.chunkSize, tc.totalSize) if err != nil { t.Fatal(err) } defer cleanup() clientDown, serverDown := spliceTestSocketPair(t, tc.downNet) defer serverDown.Close() cleanup, err = startSpliceClient(clientDown, "r", tc.chunkSize, tc.totalSize) if err != nil { t.Fatal(err) } defer cleanup() var ( r io.Reader = serverUp size = tc.totalSize ) if tc.limitReadSize > 0 { if tc.limitReadSize < size { size = tc.limitReadSize } r = &io.LimitedReader{ N: int64(tc.limitReadSize), R: serverUp, } defer serverUp.Close() } n, err := io.Copy(serverDown, r) serverDown.Close() if err != nil { t.Fatal(err) } if want := int64(size); want != n { t.Errorf("want %d bytes spliced, got %d", want, n) } if tc.limitReadSize > 0 { wantN := 0 if tc.limitReadSize > size { wantN = tc.limitReadSize - size } if n := r.(*io.LimitedReader).N; n != int64(wantN) { t.Errorf("r.N = %d, want %d", n, wantN) } } } func testSpliceReaderAtEOF(t *testing.T, upNet, downNet string) { clientUp, serverUp := spliceTestSocketPair(t, upNet) defer clientUp.Close() clientDown, serverDown := spliceTestSocketPair(t, downNet) defer clientDown.Close() serverUp.Close() // We'd like to call net.splice here and check the handled return // value, but we disable splice on old Linux kernels. // // In that case, poll.Splice and net.splice return a non-nil error // and handled == false. We'd ideally like to see handled == true // because the source reader is at EOF, but if we're running on an old // kernel, and splice is disabled, we won't see EOF from net.splice, // because we won't touch the reader at all. // // Trying to untangle the errors from net.splice and match them // against the errors created by the poll package would be brittle, // so this is a higher level test. // // The following ReadFrom should return immediately, regardless of // whether splice is disabled or not. The other side should then // get a goodbye signal. Test for the goodbye signal. msg := "bye" go func() { serverDown.(io.ReaderFrom).ReadFrom(serverUp) io.WriteString(serverDown, msg) serverDown.Close() }() buf := make([]byte, 3) _, err := io.ReadFull(clientDown, buf) if err != nil { t.Errorf("clientDown: %v", err) } if string(buf) != msg { t.Errorf("clientDown got %q, want %q", buf, msg) } } func testSpliceIssue25985(t *testing.T, upNet, downNet string) { front := newLocalListener(t, upNet) defer front.Close() back := newLocalListener(t, downNet) defer back.Close() var wg sync.WaitGroup wg.Add(2) proxy := func() { src, err := front.Accept() if err != nil { return } dst, err := Dial(downNet, back.Addr().String()) if err != nil { return } defer dst.Close() defer src.Close() go func() { io.Copy(src, dst) wg.Done() }() go func() { io.Copy(dst, src) wg.Done() }() } go proxy() toFront, err := Dial(upNet, front.Addr().String()) if err != nil { t.Fatal(err) } io.WriteString(toFront, "foo") toFront.Close() fromProxy, err := back.Accept() if err != nil { t.Fatal(err) } defer fromProxy.Close() _, err = io.ReadAll(fromProxy) if err != nil { t.Fatal(err) } wg.Wait() } func testSpliceNoUnixpacket(t *testing.T) { clientUp, serverUp := spliceTestSocketPair(t, "unixpacket") defer clientUp.Close() defer serverUp.Close() clientDown, serverDown := spliceTestSocketPair(t, "tcp") defer clientDown.Close() defer serverDown.Close() // If splice called poll.Splice here, we'd get err == syscall.EINVAL // and handled == false. If poll.Splice gets an EINVAL on the first // try, it assumes the kernel it's running on doesn't support splice // for unix sockets and returns handled == false. This works for our // purposes by somewhat of an accident, but is not entirely correct. // // What we want is err == nil and handled == false, i.e. we never // called poll.Splice, because we know the unix socket's network. _, err, handled := splice(serverDown.(*TCPConn).fd, serverUp) if err != nil || handled != false { t.Fatalf("got err = %v, handled = %t, want nil error, handled == false", err, handled) } } func testSpliceNoUnixgram(t *testing.T) { addr, err := ResolveUnixAddr("unixgram", testUnixAddr(t)) if err != nil { t.Fatal(err) } defer os.Remove(addr.Name) up, err := ListenUnixgram("unixgram", addr) if err != nil { t.Fatal(err) } defer up.Close() clientDown, serverDown := spliceTestSocketPair(t, "tcp") defer clientDown.Close() defer serverDown.Close() // Analogous to testSpliceNoUnixpacket. _, err, handled := splice(serverDown.(*TCPConn).fd, up) if err != nil || handled != false { t.Fatalf("got err = %v, handled = %t, want nil error, handled == false", err, handled) } } func BenchmarkSplice(b *testing.B) { testHookUninstaller.Do(uninstallTestHooks) b.Run("tcp-to-tcp", func(b *testing.B) { benchSplice(b, "tcp", "tcp") }) b.Run("unix-to-tcp", func(b *testing.B) { benchSplice(b, "unix", "tcp") }) } func benchSplice(b *testing.B, upNet, downNet string) { for i := 0; i <= 10; i++ { chunkSize := 1 << uint(i+10) tc := spliceTestCase{ upNet: upNet, downNet: downNet, chunkSize: chunkSize, } b.Run(strconv.Itoa(chunkSize), tc.bench) } } func (tc spliceTestCase) bench(b *testing.B) { // To benchmark the genericReadFrom code path, set this to false. useSplice := true clientUp, serverUp := spliceTestSocketPair(b, tc.upNet) defer serverUp.Close() cleanup, err := startSpliceClient(clientUp, "w", tc.chunkSize, tc.chunkSize*b.N) if err != nil { b.Fatal(err) } defer cleanup() clientDown, serverDown := spliceTestSocketPair(b, tc.downNet) defer serverDown.Close() cleanup, err = startSpliceClient(clientDown, "r", tc.chunkSize, tc.chunkSize*b.N) if err != nil { b.Fatal(err) } defer cleanup() b.SetBytes(int64(tc.chunkSize)) b.ResetTimer() if useSplice { _, err := io.Copy(serverDown, serverUp) if err != nil { b.Fatal(err) } } else { type onlyReader struct { io.Reader } _, err := io.Copy(serverDown, onlyReader{serverUp}) if err != nil { b.Fatal(err) } } } func spliceTestSocketPair(t testing.TB, net string) (client, server Conn) { t.Helper() ln := newLocalListener(t, net) defer ln.Close() var cerr, serr error acceptDone := make(chan struct{}) go func() { server, serr = ln.Accept() acceptDone <- struct{}{} }() client, cerr = Dial(ln.Addr().Network(), ln.Addr().String()) <-acceptDone if cerr != nil { if server != nil { server.Close() } t.Fatal(cerr) } if serr != nil { if client != nil { client.Close() } t.Fatal(serr) } return client, server } func startSpliceClient(conn Conn, op string, chunkSize, totalSize int) (func(), error) { f, err := conn.(interface{ File() (*os.File, error) }).File() if err != nil { return nil, err } cmd := exec.Command(os.Args[0], os.Args[1:]...) cmd.Env = []string{ "GO_NET_TEST_SPLICE=1", "GO_NET_TEST_SPLICE_OP=" + op, "GO_NET_TEST_SPLICE_CHUNK_SIZE=" + strconv.Itoa(chunkSize), "GO_NET_TEST_SPLICE_TOTAL_SIZE=" + strconv.Itoa(totalSize), "TMPDIR=" + os.Getenv("TMPDIR"), } cmd.ExtraFiles = append(cmd.ExtraFiles, f) cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr if err := cmd.Start(); err != nil { return nil, err } donec := make(chan struct{}) go func() { cmd.Wait() conn.Close() f.Close() close(donec) }() return func() { select { case <-donec: case <-time.After(5 * time.Second): log.Printf("killing splice client after 5 second shutdown timeout") cmd.Process.Kill() select { case <-donec: case <-time.After(5 * time.Second): log.Printf("splice client didn't die after 10 seconds") } } }, nil } func init() { if os.Getenv("GO_NET_TEST_SPLICE") == "" { return } defer os.Exit(0) f := os.NewFile(uintptr(3), "splice-test-conn") defer f.Close() conn, err := FileConn(f) if err != nil { log.Fatal(err) } var chunkSize int if chunkSize, err = strconv.Atoi(os.Getenv("GO_NET_TEST_SPLICE_CHUNK_SIZE")); err != nil { log.Fatal(err) } buf := make([]byte, chunkSize) var totalSize int if totalSize, err = strconv.Atoi(os.Getenv("GO_NET_TEST_SPLICE_TOTAL_SIZE")); err != nil { log.Fatal(err) } var fn func([]byte) (int, error) switch op := os.Getenv("GO_NET_TEST_SPLICE_OP"); op { case "r": fn = conn.Read case "w": defer conn.Close() fn = conn.Write default: log.Fatalf("unknown op %q", op) } var n int for count := 0; count < totalSize; count += n { if count+chunkSize > totalSize { buf = buf[:totalSize-count] } var err error if n, err = fn(buf); err != nil { return } } }