fix(openai): recognize Windows websocket resets

backend/internal/service/openai_ws_forwarder_ingress_test.go

@@ -33,6 +33,7 @@ func TestIsOpenAIWSClientDisconnectError(t *testing.T) {
 		{name: "ws_policy_violation", err: coderws.CloseError{Code: coderws.StatusPolicyViolation}, want: false},
 		{name: "wrapped_eof_message", err: errors.New("failed to get reader: failed to read frame header: EOF"), want: true},
 		{name: "connection_reset_by_peer", err: errors.New("failed to read frame header: read tcp 127.0.0.1:1234->127.0.0.1:5678: read: connection reset by peer"), want: true},
+		{name: "windows_connection_reset", err: errors.New("failed to get reader: failed to read frame header: read tcp 127.0.0.1:1234->127.0.0.1:5678: wsarecv: An existing connection was forcibly closed by the remote host."), want: true},
 		{name: "broken_pipe", err: errors.New("write tcp 127.0.0.1:1234->127.0.0.1:5678: write: broken pipe"), want: true},
 	}
 

backend/internal/service/openai_ws_forwarder_logutil.go

@@ -660,6 +660,7 @@ func isOpenAIWSClientDisconnectError(err error) bool {
 		strings.Contains(message, "use of closed network connection") ||
 		strings.Contains(message, "connection reset by peer") ||
 		strings.Contains(message, "broken pipe") ||
+		strings.Contains(message, "an existing connection was forcibly closed by the remote host") ||
 		strings.Contains(message, "an established connection was aborted")
 }