diff --git a/irc.go b/irc.go
new file mode 100644
index 0000000..728f973
--- /dev/null
+++ b/irc.go
@@ -0,0 +1,92 @@
+package jounce
+
+import (
+	"fmt"
+	"strings"
+)
+
+const (
+	rpl_localusers   = "265"
+	rpl_globalusers  = "266"
+	rpl_topicwhotime = "333"
+)
+
+type modeSet string
+
+func (ms modeSet) Has(c byte) bool {
+	return strings.IndexByte(string(ms), c) >= 0
+}
+
+func (ms *modeSet) Add(c byte) {
+	if !ms.Has(c) {
+		*ms += modeSet(c)
+	}
+}
+
+func (ms *modeSet) Del(c byte) {
+	i := strings.IndexByte(string(*ms), c)
+	if i >= 0 {
+		*ms = (*ms)[:i] + (*ms)[i+1:]
+	}
+}
+
+func (ms *modeSet) Apply(s string) error {
+	var plusMinus byte
+	for i := 0; i < len(s); i++ {
+		switch c := s[i]; c {
+		case '+', '-':
+			plusMinus = c
+		default:
+			switch plusMinus {
+			case '+':
+				ms.Add(c)
+			case '-':
+				ms.Del(c)
+			default:
+				return fmt.Errorf("malformed modestring %q: missing plus/minus", s)
+			}
+		}
+	}
+	return nil
+}
+
+type channelStatus byte
+
+const (
+	channelPublic  channelStatus = '='
+	channelSecret  channelStatus = '@'
+	channelPrivate channelStatus = '*'
+)
+
+func parseChannelStatus(s string) (channelStatus, error) {
+	if len(s) > 1 {
+		return 0, fmt.Errorf("invalid channel status %q: more than one character", s)
+	}
+	switch cs := channelStatus(s[0]); cs {
+	case channelPublic, channelSecret, channelPrivate:
+		return cs, nil
+	default:
+		return 0, fmt.Errorf("invalid channel status %q: unknown status", s)
+	}
+}
+
+type membership byte
+
+const (
+	membershipFounder   membership = '~'
+	membershipProtected membership = '&'
+	membershipOperator  membership = '@'
+	membershipHalfOp    membership = '%'
+	membershipVoice     membership = '+'
+)
+
+const stdMembershipPrefixes = "~&@%+"
+
+func parseMembershipPrefix(s string) (prefix membership, nick string) {
+	// TODO: any prefix from PREFIX RPL_ISUPPORT
+	if strings.IndexByte(stdMembershipPrefixes, s[0]) >= 0 {
+		return membership(s[0]), s[1:]
+	} else {
+		return 0, s
+	}
+}
diff --git a/upstream.go b/upstream.go
index 029e9f1..0d0ea04 100644
--- a/upstream.go
+++ b/upstream.go
@@ -12,92 +12,6 @@ import (
 	"gopkg.in/irc.v3"
 )
 
-const (
-	rpl_localusers   = "265"
-	rpl_globalusers  = "266"
-	rpl_topicwhotime = "333"
-)
-
-type modeSet string
-
-func (ms modeSet) Has(c byte) bool {
-	return strings.IndexByte(string(ms), c) >= 0
-}
-
-func (ms *modeSet) Add(c byte) {
-	if !ms.Has(c) {
-		*ms += modeSet(c)
-	}
-}
-
-func (ms *modeSet) Del(c byte) {
-	i := strings.IndexByte(string(*ms), c)
-	if i >= 0 {
-		*ms = (*ms)[:i] + (*ms)[i+1:]
-	}
-}
-
-func (ms *modeSet) Apply(s string) error {
-	var plusMinus byte
-	for i := 0; i < len(s); i++ {
-		switch c := s[i]; c {
-		case '+', '-':
-			plusMinus = c
-		default:
-			switch plusMinus {
-			case '+':
-				ms.Add(c)
-			case '-':
-				ms.Del(c)
-			default:
-				return fmt.Errorf("malformed modestring %q: missing plus/minus", s)
-			}
-		}
-	}
-	return nil
-}
-
-type channelStatus byte
-
-const (
-	channelPublic  channelStatus = '='
-	channelSecret  channelStatus = '@'
-	channelPrivate channelStatus = '*'
-)
-
-func parseChannelStatus(s string) (channelStatus, error) {
-	if len(s) > 1 {
-		return 0, fmt.Errorf("invalid channel status %q: more than one character", s)
-	}
-	switch cs := channelStatus(s[0]); cs {
-	case channelPublic, channelSecret, channelPrivate:
-		return cs, nil
-	default:
-		return 0, fmt.Errorf("invalid channel status %q: unknown status", s)
-	}
-}
-
-type membership byte
-
-const (
-	membershipFounder   membership = '~'
-	membershipProtected membership = '&'
-	membershipOperator  membership = '@'
-	membershipHalfOp    membership = '%'
-	membershipVoice     membership = '+'
-)
-
-const stdMembershipPrefixes = "~&@%+"
-
-func parseMembershipPrefix(s string) (prefix membership, nick string) {
-	// TODO: any prefix from PREFIX RPL_ISUPPORT
-	if strings.IndexByte(stdMembershipPrefixes, s[0]) >= 0 {
-		return membership(s[0]), s[1:]
-	} else {
-		return 0, s
-	}
-}
-
 type upstreamChannel struct {
 	Name      string
 	Topic     string