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conn.go
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/
conn.go
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package h2conn
import (
"context"
"io"
"sync"
)
// Conn is client/server symmetric connection.
// It implements the io.Reader/io.Writer/io.Closer to read/write or close the connection to the other side.
// It also has a Send/Recv function to use channels to communicate with the other side.
type Conn struct {
r io.Reader
wc io.WriteCloser
cancel context.CancelFunc
wLock sync.Mutex
rLock sync.Mutex
}
func newConn(ctx context.Context, r io.Reader, wc io.WriteCloser) (*Conn, context.Context) {
ctx, cancel := context.WithCancel(ctx)
return &Conn{
r: r,
wc: wc,
cancel: cancel,
}, ctx
}
// Write writes data to the connection
func (c *Conn) Write(data []byte) (int, error) {
c.wLock.Lock()
defer c.wLock.Unlock()
return c.wc.Write(data)
}
// Read reads data from the connection
func (c *Conn) Read(data []byte) (int, error) {
c.rLock.Lock()
defer c.rLock.Unlock()
return c.r.Read(data)
}
// Close closes the connection
func (c *Conn) Close() error {
c.cancel()
return c.wc.Close()
}