feat: different approach to expiry (#267)

mkysel · web-flow · commit 00fca4ed216c · 2025-05-08T11:54:19.000-07:00
diff --git a/proto/xmtpv4/envelopes/envelopes.proto b/proto/xmtpv4/envelopes/envelopes.proto
@@ -41,7 +41,7 @@ message PayerEnvelope {
   bytes unsigned_client_envelope = 1; // Protobuf serialized
   xmtp.identity.associations.RecoverableEcdsaSignature payer_signature = 2;
   uint32 target_originator = 3;
-  int64 expiry_unixtime = 4;
+  uint32 message_retention_days = 4;
 }
 
 // For blockchain envelopes, these fields are set by the smart contract
@@ -52,6 +52,7 @@ message UnsignedOriginatorEnvelope {
   bytes payer_envelope_bytes = 4;
   uint64 base_fee_picodollars = 5; // The base fee for the message in picodollars
   uint64 congestion_fee_picodollars = 6; // The congestion fee for the message in picodollars
+  uint64 expiry_unixtime = 7;
 }
 
 // An alternative to a signature for blockchain payloads

Original file line number	Diff line number	Diff line change
`@@ -41,7 +41,7 @@ message PayerEnvelope {`
`41`	`41`	`bytes unsigned_client_envelope = 1; // Protobuf serialized`
`42`	`42`	`xmtp.identity.associations.RecoverableEcdsaSignature payer_signature = 2;`
`43`	`43`	`uint32 target_originator = 3;`
`44`		`- int64 expiry_unixtime = 4;`
	`44`	`+ uint32 message_retention_days = 4;`
`45`	`45`	`}`
`46`	`46`
`47`	`47`	`// For blockchain envelopes, these fields are set by the smart contract`
`@@ -52,6 +52,7 @@ message UnsignedOriginatorEnvelope {`
`52`	`52`	`bytes payer_envelope_bytes = 4;`
`53`	`53`	`uint64 base_fee_picodollars = 5; // The base fee for the message in picodollars`
`54`	`54`	`uint64 congestion_fee_picodollars = 6; // The congestion fee for the message in picodollars`
	`55`	`+ uint64 expiry_unixtime = 7;`
`55`	`56`	`}`
`56`	`57`
`57`	`58`	`// An alternative to a signature for blockchain payloads`