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Fix typos and ensure odd-numbered channels have odd numbers #587

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Fix typos and ensure odd-numbered channels have odd numbers #587

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96d9a87
Fix some typos
jes Sep 5, 2018
25824b6
Ensure odd-numbered channels have odd numbers
jes Sep 5, 2018
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2 changes: 1 addition & 1 deletion doc/protocol.md
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Expand Up @@ -337,7 +337,7 @@ message ChatMessage {
}
```

A *message_id* of zero (or omitted) indicates that the recipient doesn't expect acknowledgement.
A *message_id* of zero (or omitted) indicates that the sender doesn't expect acknowledgement.

If *message_id* is non-zero, the recipient should acknowledge receiving this message by sending
*ChatAcknowledge*. Unacknowledged messages may be re-sent with the same *message_id*, and the
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5 changes: 2 additions & 3 deletions src/protocol/Connection.cpp
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Expand Up @@ -459,7 +459,7 @@ bool ConnectionPrivate::writePacket(int channelId, const QByteArray &data)

int ConnectionPrivate::availableOutboundChannelId()
{
// Server opens even-nubmered channels, client opens odd-numbered
// Server opens even-numbered channels, client opens odd-numbered
bool evenNumbered = (direction == Connection::ServerSide);
const int minId = evenNumbered ? 2 : 1;
const int maxId = evenNumbered ? (UINT16_MAX-1) : UINT16_MAX;
Expand All @@ -470,8 +470,7 @@ int ConnectionPrivate::availableOutboundChannelId()
// Find an unused id, trying a maximum of 100 times, using a random step to avoid collision
for (int i = 0; i < 100 && channels.contains(nextOutboundChannelId); i++) {
nextOutboundChannelId += 1 + (qrand() % 200);
if (evenNumbered)
nextOutboundChannelId += nextOutboundChannelId % 2;
nextOutboundChannelId += (nextOutboundChannelId % 2) + (evenNumbered ? 0 : 1);
if (nextOutboundChannelId > maxId)
nextOutboundChannelId = minId;
}
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