status-go/_assets/patches/geth/0032-send-mailserver-request-completed-code.patch

diff --git a/whisper/whisperv6/doc.go b/whisper/whisperv6/doc.go
index 4bbf554..2fcc9e6 100644
--- a/whisper/whisperv6/doc.go
+++ b/whisper/whisperv6/doc.go
@@ -44,13 +44,14 @@ const (
 	ProtocolName       = "shh"     // Nickname of the protocol in geth
 
 	// whisper protocol message codes, according to EIP-627
-	statusCode           = 0   // used by whisper protocol
-	messagesCode         = 1   // normal whisper message
-	powRequirementCode   = 2   // PoW requirement
-	bloomFilterExCode    = 3   // bloom filter exchange
-	p2pRequestCode       = 126 // peer-to-peer message, used by Dapp protocol
-	p2pMessageCode       = 127 // peer-to-peer message (to be consumed by the peer, but not forwarded any further)
-	NumberOfMessageCodes = 128
+	statusCode             = 0   // used by whisper protocol
+	messagesCode           = 1   // normal whisper message
+	powRequirementCode     = 2   // PoW requirement
+	bloomFilterExCode      = 3   // bloom filter exchange
+	p2pRequestCompleteCode = 125 // peer-to-peer message, used by Dapp protocol
+	p2pRequestCode         = 126 // peer-to-peer message, used by Dapp protocol
+	p2pMessageCode         = 127 // peer-to-peer message (to be consumed by the peer, but not forwarded any further)
+	NumberOfMessageCodes   = 128
 
 	SizeMask      = byte(3) // mask used to extract the size of payload size field from the flags
 	signatureFlag = byte(4)
diff --git a/whisper/whisperv6/events.go b/whisper/whisperv6/events.go
index e03ec9d..1665539 100644
--- a/whisper/whisperv6/events.go
+++ b/whisper/whisperv6/events.go
@@ -1,23 +1,27 @@
 package whisperv6
 
 import (
-       "github.com/ethereum/go-ethereum/common"
-       "github.com/ethereum/go-ethereum/p2p/discover"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/p2p/discover"
 )
 
 // EventType used to define known envelope events.
 type EventType string
 
 const (
-       // EventEnvelopeSent fires when envelope was sent to a peer.
-       EventEnvelopeSent EventType = "envelope.sent"
-       // EventEnvelopeExpired fires when envelop expired
-       EventEnvelopeExpired EventType = "envelope.expired"
+	// EventEnvelopeSent fires when envelope was sent to a peer.
+	EventEnvelopeSent EventType = "envelope.sent"
+	// EventEnvelopeExpired fires when envelop expired
+	EventEnvelopeExpired EventType = "envelope.expired"
+	// EventMailServerRequestCompleted fires after mailserver sends all the requested messages
+	EventMailServerRequestCompleted EventType = "mailserver.request.completed"
+	// EventMailServerRequestExpired fires after mailserver the request TTL ends
+	EventMailServerRequestExpired EventType = "mailserver.request.expired"
 )
 
 // EnvelopeEvent used for envelopes events.
 type EnvelopeEvent struct {
-       Event EventType
-       Hash  common.Hash
-       Peer  discover.NodeID
+	Event EventType
+	Hash  common.Hash
+	Peer  discover.NodeID
 }
diff --git a/whisper/whisperv6/whisper.go b/whisper/whisperv6/whisper.go
index 697f0ec..4a7b006 100644
--- a/whisper/whisperv6/whisper.go
+++ b/whisper/whisperv6/whisper.go
@@ -378,6 +378,15 @@ func (whisper *Whisper) RequestHistoricMessages(peerID []byte, envelope *Envelop
 	return p2p.Send(p.ws, p2pRequestCode, envelope)
 }
 
+func (whisper *Whisper) SendHistoricMessageResponse(peer *Peer, requestID common.Hash) error {
+	size, r, err := rlp.EncodeToReader(requestID)
+	if err != nil {
+		return err
+	}
+
+	return peer.ws.WriteMsg(p2p.Msg{Code: p2pRequestCompleteCode, Size: uint32(size), Payload: r})
+}
+
 // SendP2PMessage sends a peer-to-peer message to a specific peer.
 func (whisper *Whisper) SendP2PMessage(peerID []byte, envelope *Envelope) error {
 	p, err := whisper.getPeer(peerID)
@@ -821,8 +830,22 @@ func (whisper *Whisper) runMessageLoop(p *Peer, rw p2p.MsgReadWriter) error {
 					log.Warn("failed to decode p2p request message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
 					return errors.New("invalid p2p request")
 				}
+
 				whisper.mailServer.DeliverMail(p, &request)
 			}
+		case p2pRequestCompleteCode:
+			if p.trusted {
+				var requestID common.Hash
+				if err := packet.Decode(&requestID); err != nil {
+					log.Warn("failed to decode response message, peer will be disconnected", "peer", p.peer.ID(), "err", err)
+					return errors.New("invalid request response message")
+				}
+
+				whisper.envelopeFeed.Send(EnvelopeEvent{
+					Hash:  requestID,
+					Event: EventMailServerRequestCompleted,
+				})
+			}
 		default:
 			// New message types might be implemented in the future versions of Whisper.
 			// For forward compatibility, just ignore.