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proxy: provide keepalive helpers (#231)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package keepalive | ||
|
|
||
| import ( | ||
| "net" | ||
|
|
||
| "github.com/pingcap/TiProxy/lib/config" | ||
| "github.com/pingcap/TiProxy/lib/util/errors" | ||
| ) | ||
|
|
||
| var ( | ||
| ErrKeepAlive = errors.New("failed to set keepalive") | ||
| ) | ||
|
|
||
| func SetKeepalive(conn net.Conn, cfg config.KeepAlive) error { | ||
| tcpcn, ok := conn.(*net.TCPConn) | ||
| if !ok { | ||
| return errors.Wrapf(ErrKeepAlive, "not net.TCPConn") | ||
| } | ||
|
|
||
| if err := tcpcn.SetKeepAlive(cfg.Enabled); err != nil { | ||
| return errors.Wrap(ErrKeepAlive, err) | ||
| } | ||
| if !cfg.Enabled { | ||
| return nil | ||
| } | ||
|
|
||
| syscn, err := tcpcn.SyscallConn() | ||
| if err != nil { | ||
| return errors.Wrap(ErrKeepAlive, err) | ||
| } | ||
|
|
||
| return setKeepalive(syscn, cfg) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| //go:build darwin | ||
|
|
||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package keepalive | ||
|
|
||
| import ( | ||
| "syscall" | ||
|
|
||
| "github.com/pingcap/TiProxy/lib/config" | ||
| "github.com/pingcap/TiProxy/lib/util/errors" | ||
| ) | ||
|
|
||
| const ( | ||
| // missing in older darwin | ||
| _TCP_KEEPINTVL = 0x101 | ||
| _TCP_KEEPCNT = 0x102 | ||
| ) | ||
|
|
||
| func setKeepalive(syscn syscall.RawConn, cfg config.KeepAlive) error { | ||
| var serr error | ||
| return errors.Collect(ErrKeepAlive, serr, syscn.Control(func(fd uintptr) { | ||
| if val := cfg.Idle.Seconds(); val > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPALIVE, int(val)) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| if cfg.Cnt > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, _TCP_KEEPCNT, cfg.Cnt) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| if val := cfg.Intvl.Seconds(); val > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, _TCP_KEEPINTVL, int(val)) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| })) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| //go:build !(linux || netbsd || freebsd || dragonfly || aix || darwin) | ||
|
|
||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package keepalive | ||
|
|
||
| import ( | ||
| "syscall" | ||
|
|
||
| "github.com/pingcap/TiProxy/lib/config" | ||
| ) | ||
|
|
||
| func setKeepalive(syscn syscall.RawConn, cfg config.KeepAlive) error { | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| //go:build linux || netbsd || freebsd || dragonfly || aix | ||
|
|
||
| // Copyright 2023 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package keepalive | ||
|
|
||
| import ( | ||
| "syscall" | ||
|
|
||
| "github.com/pingcap/TiProxy/lib/config" | ||
| "github.com/pingcap/TiProxy/lib/util/errors" | ||
| ) | ||
|
|
||
| func setKeepalive(syscn syscall.RawConn, cfg config.KeepAlive) error { | ||
| var serr error | ||
| return errors.Collect(ErrKeepAlive, serr, syscn.Control(func(fd uintptr) { | ||
| if val := cfg.Idle.Seconds(); val > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, int(val)) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| if cfg.Cnt > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPCNT, cfg.Cnt) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| if val := cfg.Intvl.Seconds(); val > 0 { | ||
| serr = syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, int(val)) | ||
| if serr != nil { | ||
| return | ||
| } | ||
| } | ||
| })) | ||
| } |
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