Added comments

lib/Eventcast.js

@@ -257,6 +257,14 @@ Eventcast.prototype._dispatchMessage = function _dispatchMessage(event) {
 }
 
 
+
+/**
+ * Request retransmission of selected packets.
+ * 
+ * @param {String} seqId Sequence ID
+ * @param {Array} seqs IDs of packets need to be retransmitted.
+ * @private
+ */
 Eventcast.prototype._requestRetransmission = function _requestRetransmission(seqId, seqs) {
   var host = this.messageBuffer.getSenderMeta(seqId).host
     , port = this.messageBuffer.getSenderMeta(seqId).port
@@ -285,6 +293,12 @@ Eventcast.prototype._requestRetransmission = function _requestRetransmission(seq
 }
 
 
+/**
+ * Process retransmission request.
+ * 
+ * @param {Object} req Object containing `seqId` and an array of missed `seq`s.
+ * @private
+ */
 Eventcast.prototype._retransmit = function _retransmit(req) {
   var self = this
     , messages = this.messageBuffer.getOutgoingPackets(req.seqId, req.missedSeq)