Change the size limit type to an int64

connection.go

@@ -4,7 +4,7 @@ import "io"
 import "net"
 // import "time"
 
-const defaultSizeLimit = 1024 * 1024 // 1 megabyte
+const defaultSizeLimit int64 = 1024 * 1024 // 1 megabyte
 
 // Conn is a HOPP connection.
 type Conn interface {
@@ -25,7 +25,7 @@ type Conn interface {
 
 	// SetSizeLimit sets a limit (in bytes) for how large messages can be.
 	// By default, this limit is 1 megabyte.
-	SetSizeLimit(limit int)
+	SetSizeLimit(limit int64)
 }
 
 // Trans is a HOPP transaction.

metadaptb.go

@@ -5,12 +5,10 @@ import "net"
 import "context"
 import "git.tebibyte.media/sashakoshka/hopp/tape"
 
-// TODO: change size limit to be int64
-
 // B implements METADAPT-B over a multiplexed stream-oriented transport such as
 // QUIC.
 type b struct {
-	sizeLimit  int
+	sizeLimit  int64
 	underlying MultiConn
 }
 
@@ -47,7 +45,7 @@ func (this *b) AcceptTrans() (Trans, error) {
 	return this.newTrans(stream), nil
 }
 
-func (this *b) SetSizeLimit(limit int) {
+func (this *b) SetSizeLimit(limit int64) {
 	this.sizeLimit = limit
 }
 
@@ -59,7 +57,7 @@ func (this *b) newTrans(underlying Stream) *transB {
 }
 
 type transB struct {
-	sizeLimit int
+	sizeLimit int64
 	underlying Stream
 	currentData io.Reader
 }
@@ -127,8 +125,8 @@ type Stream interface {
 	ID() int64
 }
 
-func encodeMessageB(writer io.Writer, sizeLimit int, method uint16, data []byte) error {
-	if len(data) > sizeLimit {
+func encodeMessageB(writer io.Writer, sizeLimit int64, method uint16, data []byte) error {
+	if len(data) > int(sizeLimit) {
 		return ErrPayloadTooLarge
 	}
 	buffer := make([]byte, 10 + len(data))
@@ -141,7 +139,7 @@ func encodeMessageB(writer io.Writer, sizeLimit int, method uint16, data []byte)
 
 func decodeMessageB(
 	reader io.Reader,
-	sizeLimit int,
+	sizeLimit int64,
 ) (
 	method uint16,
 	size   int64,