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d14809694f
* [NOD-1223] Delete unused files/packages. * [NOD-1223] Move signal and limits to the os package. * [NOD-1223] Put database and dbaccess into the db package. * [NOD-1223] Fold the logs package into the logger package. * [NOD-1223] Rename domainmessage to appmessage. * [NOD-1223] Rename to/from DomainMessage to AppMessage. * [NOD-1223] Move appmessage to the app packge. * [NOD-1223] Move protocol to the app packge. * [NOD-1223] Move the network package to the infrastructure packge. * [NOD-1223] Rename cmd to executables. * [NOD-1223] Fix go.doc in the logger package.
77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
package handshake
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import (
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"github.com/kaspanet/kaspad/app/appmessage"
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"github.com/kaspanet/kaspad/app/protocol/common"
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"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
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"github.com/kaspanet/kaspad/version"
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)
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var (
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// userAgentName is the user agent name and is used to help identify
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// ourselves to other kaspa peers.
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userAgentName = "kaspad"
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// userAgentVersion is the user agent version and is used to help
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// identify ourselves to other kaspa peers.
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userAgentVersion = version.Version()
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// defaultServices describes the default services that are supported by
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// the server.
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defaultServices = appmessage.SFNodeNetwork | appmessage.SFNodeBloom | appmessage.SFNodeCF
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// defaultRequiredServices describes the default services that are
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// required to be supported by outbound peers.
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defaultRequiredServices = appmessage.SFNodeNetwork
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)
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type sendVersionFlow struct {
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HandleHandshakeContext
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incomingRoute, outgoingRoute *router.Route
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}
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// SendVersion sends a version to a peer and waits for verack.
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func SendVersion(context HandleHandshakeContext, incomingRoute *router.Route, outgoingRoute *router.Route) error {
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flow := &sendVersionFlow{
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HandleHandshakeContext: context,
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incomingRoute: incomingRoute,
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outgoingRoute: outgoingRoute,
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}
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return flow.start()
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}
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func (flow *sendVersionFlow) start() error {
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selectedTipHash := flow.DAG().SelectedTipHash()
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subnetworkID := flow.Config().SubnetworkID
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// Version message.
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localAddress, err := flow.NetAdapter().GetBestLocalAddress()
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if err != nil {
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return err
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}
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msg := appmessage.NewMsgVersion(localAddress, flow.NetAdapter().ID(),
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flow.Config().ActiveNetParams.Name, selectedTipHash, subnetworkID)
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msg.AddUserAgent(userAgentName, userAgentVersion, flow.Config().UserAgentComments...)
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// Advertise the services flag
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msg.Services = defaultServices
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// Advertise our max supported protocol version.
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msg.ProtocolVersion = appmessage.ProtocolVersion
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// Advertise if inv messages for transactions are desired.
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msg.DisableRelayTx = flow.Config().BlocksOnly
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err = flow.outgoingRoute.Enqueue(msg)
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if err != nil {
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return err
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}
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// Wait for verack
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_, err = flow.incomingRoute.DequeueWithTimeout(common.DefaultTimeout)
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if err != nil {
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return err
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}
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return nil
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}
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