The new type [KeepAliveConfig] permits fine-tuning the keep-alive
options for TCP connections, via a new [TCPConn.SetKeepAliveConfig]

pkg mime/quotedprintable, type Reader struct
pkg mime/quotedprintable, type Writer struct
pkg mime/quotedprintable, type Writer struct, Binary bool
pkg net, type Dialer struct, FallbackDelay time.Duration
pkg net, type OpError struct, Source Addr
pkg net/http, type Request struct, Cancel <-chan struct
pkg net/http/fcgi, var ErrConnClosed error
pkg net/http/fcgi, var ErrRequestAborted error

pkg crypto/tls, const CurveP384 = 24
pkg crypto/tls, const CurveP384 CurveID
pkg crypto/tls, const CurveP521 = 25
pkg crypto/tls, const CurveP521 CurveID
pkg crypto/tls, func DialWithDialer(*net.Dialer, string, string, *Config) (*Conn, error)
pkg crypto/tls, func NewLRUClientSessionCache(int) ClientSessionCache
pkg crypto/tls, type ClientSessionCache interface { Get, Put }

pkg math/big, method (*Int) Text(int) string
pkg math/rand, func Read([]uint8) (int, error)
pkg math/rand, method (*Rand) Read([]uint8) (int, error)
pkg net, type DNSError struct, IsTemporary bool
pkg net, type Dialer struct, Cancel <-chan struct
pkg net/http, const MethodConnect = "CONNECT"
pkg net/http, const MethodConnect ideal-string
pkg net/http, const MethodDelete = "DELETE"
pkg net/http, const MethodDelete ideal-string

pkg go/types, method (*Interface) Embedded //deprecated
pkg image, var ZP //deprecated
pkg image, var ZR //deprecated
pkg image/jpeg, type Reader //deprecated
pkg net, type Dialer struct, Cancel //deprecated
pkg net, type Dialer struct, DualStack //deprecated
pkg net/http, method (*Transport) CancelRequest //deprecated
pkg net/http, type CloseNotifier //deprecated
pkg net/http, type ProtocolError //deprecated

pkg syscall (freebsd-arm64), type RtMetrics struct
pkg syscall (freebsd-arm64), type RtMetrics struct, Expire uint64
pkg syscall (freebsd-arm64), type RtMetrics struct, Filler [3]uint64
pkg syscall (freebsd-arm64), type RtMetrics struct, Hopcount uint64
pkg syscall (freebsd-arm64), type RtMetrics struct, Locks uint64
pkg syscall (freebsd-arm64), type RtMetrics struct, Mtu uint64

pkg syscall (darwin-386), type RtMetrics struct
pkg syscall (darwin-386), type RtMetrics struct, Expire int32
pkg syscall (darwin-386), type RtMetrics struct, Filler [4]uint32
pkg syscall (darwin-386), type RtMetrics struct, Hopcount uint32
pkg syscall (darwin-386), type RtMetrics struct, Locks uint32
pkg syscall (darwin-386), type RtMetrics struct, Mtu uint32

pkg net, method (*TCPConn) SetKeepAliveConfig(KeepAliveConfig) error #62254
pkg net, type Dialer struct, KeepAliveConfig KeepAliveConfig #62254
pkg net, type KeepAliveConfig struct #62254
pkg net, type KeepAliveConfig struct, Count int #62254
pkg net, type KeepAliveConfig struct, Enable bool #62254
pkg net, type KeepAliveConfig struct, Idle time.Duration #62254
pkg net, type KeepAliveConfig struct, Interval time.Duration #62254

pkg net, method (*Resolver) LookupTXT(context.Context, string) ([]string, error)
pkg net, method (*UnixListener) SetUnlinkOnClose(bool)
pkg net, type Buffers [][]uint8
pkg net, type Dialer struct, Resolver *Resolver
pkg net, type Resolver struct
pkg net, type Resolver struct, PreferGo bool
pkg net/url, func PathEscape(string) string
pkg net/url, func PathUnescape(string) (string, error)

Go 1.21 adds the support of Multipath TCP but it is only used if the application
explicitly asked for it. This behavior can be controlled by the
[`multipathtcp` setting](/pkg/net#Dialer.SetMultipathTCP).

There is no plan to remove any of these settings.

### Go 1.20

Go 1.20 introduced support for rejecting insecure paths in tar and zip archives,