Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

conn

package module

Go to main page

Versions in this module

v1

v1.1.1

Feb 14, 2026

v1.1.0

Jan 17, 2026

v1.0.16

Oct 5, 2025

v1.0.15

Sep 26, 2025

v1.0.14

Sep 26, 2025

v1.0.13

Sep 26, 2025

v1.0.12

Sep 10, 2025

Changes in this version

+ var ErrNotTCPConn = errors.New("not a TCP connection")

+ var ErrNotUDPConn = errors.New("not a UDP connection")

type StatConn

+ func (sc *StatConn) CloseRead() error

+ func (sc *StatConn) CloseWrite() error

+ func (sc *StatConn) IsTCP() bool

+ func (sc *StatConn) IsUDP() bool

+ func (sc *StatConn) NetworkType() string

+ func (sc *StatConn) ReadFromUDP(b []byte) (int, *net.UDPAddr, error)

+ func (sc *StatConn) ReadMsgUDP(b, oob []byte) (n, oobn, flags int, addr *net.UDPAddr, err error)

+ func (sc *StatConn) SetKeepAlive(keepalive bool) error

+ func (sc *StatConn) SetKeepAlivePeriod(d time.Duration) error

+ func (sc *StatConn) SetLinger(sec int) error

+ func (sc *StatConn) SetNoDelay(noDelay bool) error

+ func (sc *StatConn) SetReadBuffer(bytes int) error

+ func (sc *StatConn) SetWriteBuffer(bytes int) error

+ func (sc *StatConn) WriteMsgUDP(b, oob []byte, addr *net.UDPAddr) (n, oobn int, err error)

+ func (sc *StatConn) WriteToUDP(b []byte, addr *net.UDPAddr) (int, error)

v1.0.11

Sep 7, 2025

Changes in this version

type StatConn

+ func (sc *StatConn) AsTCPConn() (*net.TCPConn, bool)

+ func (sc *StatConn) AsUDPConn() (*net.UDPConn, bool)

+ func (sc *StatConn) Unwrap() net.Conn

v1.0.10

Aug 22, 2025

v1.0.9

Aug 13, 2025

v1.0.8

Aug 9, 2025

Changes in this version

type RateLimiter

+ func (rl *RateLimiter) Reset()

+ func (rl *RateLimiter) SetRate(readBytesPerSecond, writeBytesPerSecond int64)

type StatConn

+ func NewStatConn(conn net.Conn, rx, tx *uint64, rate *RateLimiter) *StatConn

+ func (sc *StatConn) GetConn() net.Conn

+ func (sc *StatConn) GetRX() uint64

+ func (sc *StatConn) GetRate() *RateLimiter

+ func (sc *StatConn) GetTX() uint64

+ func (sc *StatConn) GetTotal() uint64

+ func (sc *StatConn) Reset()

v1.0.7

Aug 9, 2025

v1.0.6

Aug 9, 2025

v1.0.5

Aug 9, 2025

Changes in this version

+ type RateLimiter struct

+ func NewRateLimiter(readBytesPerSecond, writeBytesPerSecond int64) *RateLimiter

+ func (rl *RateLimiter) WaitRead(bytes int64)

+ func (rl *RateLimiter) WaitWrite(bytes int64)

type StatConn

+ Rate *RateLimiter

v1.0.4

Aug 1, 2025

Changes in this version

+ type StatConn struct

+ Conn net.Conn

+ RX *uint64

+ TX *uint64

+ func (sc *StatConn) Close() error

+ func (sc *StatConn) LocalAddr() net.Addr

+ func (sc *StatConn) Read(b []byte) (int, error)

+ func (sc *StatConn) RemoteAddr() net.Addr

+ func (sc *StatConn) SetDeadline(t time.Time) error

+ func (sc *StatConn) SetReadDeadline(t time.Time) error

+ func (sc *StatConn) SetWriteDeadline(t time.Time) error

+ func (sc *StatConn) Write(b []byte) (int, error)

v1.0.3

Jul 16, 2025

Changes in this version

type TimeoutReader

+ Conn net.Conn

+ Timeout time.Duration

v1.0.2

Jul 16, 2025

Changes in this version

+ type TimeoutReader struct

+ func (tr *TimeoutReader) Read(b []byte) (int, error)

v1.0.1

Jul 8, 2025

v1.0.0

May 8, 2025

Changes in this version

+ func DataExchange(conn1, conn2 net.Conn) (int64, int64, error)

+ func DataTransfer(udpConn *net.UDPConn, tcpConn net.Conn, udpAddr *net.UDPAddr, ...) (udpToTcp uint64, tcpToUdp uint64, err error)