[go-nuts] How can stop a Read of net.Conn without closing it

[杜沁园]

When there is no data in tcp connection,   net.Conn.Read   will block.

Then I want to cancel the net.Conn.Read  from another goroutine,   But I do 
not want to close the connection, Because I will reuse it latter. How to 
write the code???

 For example:





func (p *proxy) toClient(ctx context.Context, conn net.Conn) {

for {
               // block here
n, err := conn.Read(buff)
               //.... handle something
}
}

func main() {
        //... build connection
        go toClient(ctx, conn)
       
        //... Then I want to cancel above block read and reuse the conn,  
How to write????
        cancle()
        reuse(conn)
}

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