71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
// Contains some common utility functions for testing.
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package whisper
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"math/rand"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/p2p/discover"
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)
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// randomNodeID generates and returns a random P2P discovery node id for the
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// whisper tests.
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func randomNodeID() (id discover.NodeID) {
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for i := range id {
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id[i] = byte(rand.Intn(255))
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}
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return id
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}
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// randomNodeName generates and returns a random P2P node name for the whisper
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// tests.
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func randomNodeName() string {
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return common.MakeName(fmt.Sprintf("whisper-go-test-%3d", rand.Intn(999)), "1.0")
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}
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// whisperCaps returns the node capabilities for running the whisper sub-protocol.
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func whisperCaps() []p2p.Cap {
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return []p2p.Cap{
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p2p.Cap{
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Name: protocolName,
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Version: uint(protocolVersion),
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},
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}
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}
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// bufMsgPipe creates a buffered message pipe between two endpoints.
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func bufMsgPipe() (*p2p.MsgPipeRW, *p2p.MsgPipeRW) {
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A, midA := p2p.MsgPipe()
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midB, B := p2p.MsgPipe()
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go copyMsgPipe(midA, midB)
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go copyMsgPipe(midB, midA)
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return A, B
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}
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// copyMsgPipe copies messages from the src pipe to the dest.
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func copyMsgPipe(dst, src *p2p.MsgPipeRW) {
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defer dst.Close()
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for {
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msg, err := src.ReadMsg()
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if err != nil {
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return
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}
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data, err := ioutil.ReadAll(msg.Payload)
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if err != nil {
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return
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}
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msg.Payload = bytes.NewReader(data)
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if err := dst.WriteMsg(msg); err != nil {
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return
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}
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}
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}
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