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Avoid unhandled error warnings

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PiperOrigin-RevId: 393104589
This commit is contained in:
Tamir Duberstein
2021-08-26 05:55:43 -07:00
committed by gVisor bot
parent c408789ed4
commit 9f3fa7635e
1 changed files with 7 additions and 4 deletions
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pkg/tcpip/transport/tcp/connect.go
+7 -4
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@@ -164,13 +164,16 @@ func (h *handshake) resetState() {
// recommendation here https://tools.ietf.org/html/rfc6528#page-3.
func generateSecureISN(id stack.TransportEndpointID, clock tcpip.Clock, seed uint32) seqnum.Value {
isnHasher := jenkins.Sum32(seed)
isnHasher.Write([]byte(id.LocalAddress))
isnHasher.Write([]byte(id.RemoteAddress))
// Per hash.Hash.Writer:
//
// It never returns an error.
_, _ = isnHasher.Write([]byte(id.LocalAddress))
_, _ = isnHasher.Write([]byte(id.RemoteAddress))
portBuf := make([]byte, 2)
binary.LittleEndian.PutUint16(portBuf, id.LocalPort)
isnHasher.Write(portBuf)
_, _ = isnHasher.Write(portBuf)
binary.LittleEndian.PutUint16(portBuf, id.RemotePort)
isnHasher.Write(portBuf)
_, _ = isnHasher.Write(portBuf)
// The time period here is 64ns. This is similar to what linux uses
// generate a sequence number that overlaps less than one
// time per MSL (2 minutes).