fFreeUpStreamChannels
int32 fFreeUpStreamChannels;
if (fFreeUpStreamChannels < 1) {
fFreeUpStreamChannels--;
*channel = fUpStreamChannels.ElementAt(fFreeUpStreamChannels);
int32 index = fUpStreamChannels.IndexOf(channel, fFreeUpStreamChannels);
if (index != fFreeUpStreamChannels) {
Channel*& target = fUpStreamChannels.ElementAt(fFreeUpStreamChannels);
fFreeUpStreamChannels++;