diff --git a/uris.go b/uris.go
new file mode 100644
index 0000000..8db41e3
--- /dev/null
+++ b/uris.go
@@ -0,0 +1,37 @@
+package wampproto
+
+const (
+	CloseGoodByeAndOut  = "wamp.close.goodbye_and_out"
+	CloseCloseRealm     = "wamp.close.close_realm"
+	CloseSystemShutdown = "wamp.close.system_shutdown"
+	CloseKilled         = "wamp.close.killed"
+
+	ErrNoMatchingAuthMethod       = "wamp.error.no_matching_auth_method"
+	ErrNoSuchRealm                = "wamp.error.no_such_realm"
+	ErrNoSuchRole                 = "wamp.error.no_such_role"
+	ErrNoSuchPrincipal            = "wamp.error.no_such_principal"
+	ErrNoSuchSession              = "wamp.error.no_such_session"
+	ErrAuthenticationDenied       = "wamp.error.authentication_denied"
+	ErrAuthenticationFailed       = "wamp.error.authentication_failed"
+	ErrAuthenticationRequired     = "wamp.error.authentication_required"
+	ErrAuthorizationDenied        = "wamp.error.authorization_denied"
+	ErrAuthorizationFailed        = "wamp.error.authorization_failed"
+	ErrAuthorizationRequired      = "wamp.error.authorization_required"
+	ErrTimeout                    = "wamp.error.timeout"
+	ErrOptionNotAllowed           = "wamp.error.option_not_allowed"
+	ErrOptionDisallowedDiscloseMe = "wamp.error.option_disallowed.disclose_me"
+	ErrNetworkFailure             = "wamp.error.network_failure"
+	ErrUnavailable                = "wamp.error.unavailable"
+	ErrNoAvailableCallee          = "wamp.error.no_available_callee"
+	ErrFeatureNotSupported        = "wamp.error.feature_not_supported"
+	ErrInvalidURI                 = "wamp.error.invalid_uri"
+	ErrNoSuchProcedure            = "wamp.error.no_such_procedure"
+	ErrProcedureAlreadyExists     = "wamp.error.procedure_already_exists"
+	ErrNoSuchRegistration         = "wamp.error.no_such_registration"
+	ErrNoSuchSubscription         = "wamp.error.no_such_subscription"
+	ErrInvalidArgument            = "wamp.error.invalid_argument"
+	ErrCanceled                   = "wamp.error.canceled"
+	ErrPayloadSizeExceeded        = "wamp.error.payload_size_exceeded"
+	ErrProtocolViolation          = "wamp.error.protocol_violation"
+	ErrNotAuthorized              = "wamp.error.not_authorized"
+)