public Buffer encodeToWire() {
int length = 1024; // TODO make this configurable
Buffer buffer = Buffer.buffer(length);
buffer.appendInt(0);
buffer.appendByte(WIRE_PROTOCOL_VERSION);
byte systemCodecID = messageCodec.systemCodecID();
buffer.appendByte(systemCodecID);
if (systemCodecID == -1) {
// User codec
writeString(buffer, messageCodec.name());
}
buffer.appendByte(send ? (byte) 0 : (byte) 1);
writeString(buffer, address);
if (replyAddress != null) {
writeString(buffer, replyAddress);
} else {
buffer.appendInt(0);
}
buffer.appendInt(sender.port);
writeString(buffer, sender.host);
encodeHeaders(buffer);
writeBody(buffer);
buffer.setInt(0, buffer.length() - 4);
return buffer;
}
private void encodeHeaders(Buffer buffer) {
if (headers != null && !headers.isEmpty()) {
int headersLengthPos = buffer.length();
buffer.appendInt(0);
buffer.appendInt(headers.size());
List<Map.Entry<String, String>> entries = headers.entries();
for (Map.Entry<String, String> entry : entries) {
writeString(buffer, entry.getKey());
writeString(buffer, entry.getValue());
}
int headersEndPos = buffer.length();
buffer.setInt(headersLengthPos, headersEndPos - headersLengthPos);
} else {
buffer.appendInt(4);
}
}