mirror of
https://github.com/hanzo-ds/go.git
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zeekay
22b3f5ce2b
Feature-complete v2.44.0 (lib/churl, lib/col, BFloat16, QBit, scanTypeDuration, Options.Logger *slog.Logger) — fixes the [email protected].0 downgrade RED caught. Package datastore, module github.com/hanzo-ds/go, depends only on hanzo-ds/native. Wire strings preserved VERBATIM (X-ClickHouse-* headers, sql.Register("clickhouse"), clickhouse:// DSN, ClientName="clickhouse-go") — consistent with native.
50 lines
928 B
Go
50 lines
928 B
Go
//go:build linux || darwin || dragonfly || freebsd || netbsd || openbsd || solaris || illumos
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// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos
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package datastore
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import (
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"crypto/tls"
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"errors"
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"io"
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"syscall"
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)
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func (c *connect) connCheck() error {
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conn := c.conn
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if tlsConn, ok := c.conn.(*tls.Conn); ok {
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conn = tlsConn.NetConn()
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}
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var sysErr error
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sysConn, ok := conn.(syscall.Conn)
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if !ok {
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return nil
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}
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rawConn, err := sysConn.SyscallConn()
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if err != nil {
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return err
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}
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err = rawConn.Read(func(fd uintptr) bool {
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var buf [1]byte
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n, err := syscall.Read(int(fd), buf[:])
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switch {
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case n == 0 && err == nil:
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sysErr = io.EOF
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case n > 0:
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sysErr = errors.New("unexpected read from socket")
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case err == syscall.EAGAIN || err == syscall.EWOULDBLOCK:
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sysErr = nil
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default:
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sysErr = err
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}
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return true
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})
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if err != nil {
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return err
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}
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return sysErr
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}
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