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simplify listener implementation setup customizations in right place (#19589)

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Harshavardhana
2024-04-23 21:08:47 -07:00
committed by GitHub
parent 7640cd24c9
commit f3a52cc195
9 changed files with 84 additions and 107 deletions
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internal/http/dial_linux.go
+23 -22
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@@ -39,9 +39,16 @@ func setTCPParametersFn(opts TCPOptions) func(network, address string, c syscall
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
{
// Enable big buffers
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_SNDBUF, opts.SendBufSize)
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_RCVBUF, opts.RecvBufSize)
}
// Enable TCP open
// https://lwn.net/Articles/508865/ - 16k queue size.
_ = syscall.SetsockoptInt(fd, syscall.SOL_TCP, unix.TCP_FASTOPEN, 16*1024)
// https://lwn.net/Articles/508865/ - 32k queue size.
_ = syscall.SetsockoptInt(fd, syscall.SOL_TCP, unix.TCP_FASTOPEN, 32*1024)
// Enable TCP fast connect
// TCPFastOpenConnect sets the underlying socket to use
@@ -53,17 +60,22 @@ func setTCPParametersFn(opts TCPOptions) func(network, address string, c syscall
// "Set TCP_QUICKACK. If you find a case where that makes things worse, let me know."
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, unix.TCP_QUICKACK, 1)
// The time (in seconds) the connection needs to remain idle before
// TCP starts sending keepalive probes
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, 15)
/// Enable keep-alive
{
_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_KEEPALIVE, 1)
// Number of probes.
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_probes (defaults to 9, we reduce it to 5)
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPCNT, 5)
// The time (in seconds) the connection needs to remain idle before
// TCP starts sending keepalive probes
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPIDLE, 15)
// Wait time after successful probe in seconds.
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_intvl (defaults to 75 secs, we reduce it to 15 secs)
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, 15)
// Number of probes.
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_probes (defaults to 9, we reduce it to 5)
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPCNT, 5)
// Wait time after successful probe in seconds.
// ~ cat /proc/sys/net/ipv4/tcp_keepalive_intvl (defaults to 75 secs, we reduce it to 15 secs)
_ = syscall.SetsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_KEEPINTVL, 15)
}
// Set tcp user timeout in addition to the keep-alive - tcp-keepalive is not enough to close a socket
// with dead end because tcp-keepalive is not fired when there is data in the socket buffer.
@@ -100,14 +112,3 @@ func NewInternodeDialContext(dialTimeout time.Duration, opts TCPOptions) DialCon
return dialer.DialContext(ctx, network, addr)
}
}
// NewCustomDialContext setups a custom dialer for any external communication and proxies.
func NewCustomDialContext(dialTimeout time.Duration, opts TCPOptions) DialContext {
return func(ctx context.Context, network, addr string) (net.Conn, error) {
dialer := &net.Dialer{
Timeout: dialTimeout,
Control: setTCPParametersFn(opts),
}
return dialer.DialContext(ctx, network, addr)
}
}