1 files changed, 40 insertions, 0 deletions
diff --git a/client_publish.go b/client_publish.go
new file mode 100644
index 0000000..f80f1ab
--- /dev/null
+++ b/client_publish.go
@@ -0,0 +1,40 @@
+package psmb
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/hit-mc/psmb-go/protocol"
+	"io"
+)
+
+// Publish a message. Panic if client mode is not Publisher. Block if send queue is full.
+func (c *Client) Publish(msg []byte) error {
+	if c.mode.Type() != protocol.ModePublish {
+		panic(fmt.Errorf("invalid operation"))
+	}
+	c.txQueue <- bytesOutboundMessage{
+		b:        msg,
+		waitChan: make(chan error),
+	}
+	return nil
+}
+
+type OutboundMessage interface {
+	// getContent return the content reader and length in bytes
+	getContent() (io.Reader, int64)
+	// Wait returns a channel which blocks until this message is successfully sent to the server.
+	Wait() <-chan error
+}
+
+type bytesOutboundMessage struct {
+	b        []byte
+	waitChan chan error
+}
+
+func (b bytesOutboundMessage) getContent() (io.Reader, int64) {
+	return bytes.NewReader(b.b), int64(len(b.b))
+}
+
+func (b bytesOutboundMessage) Wait() <-chan error {
+	return b.waitChan
+}