Changes

.---------------. . --------------- . || SyncCompleted || ' --------------- ' '---------------' ^ | / .

/ . discoverMessages() | .-------. syncCompleted() / \ . ' . \ pendingHeaders() > 0 | | pendingMessages() > 0 downloadMessages() ------. \ .----------------. \ v .----------------. .----------------. / ------------- / `-> --------------- / `-> --------------- / `-> ------------------ ------>|IdleCompleted| |ReadyToDiscover| |ReadyToDownload| |DownloadInProgress| ------------- <- / --------------- <- / --------------- <- / ------------------ ^ \ `-----------------' `-----------------' `-----------------' ^ \ | \ pendingHeaders() = 0 pendingMessages() = 0 downloadOK() | \ / \ / \ / . . . / | | downloadFail() / headersOutOfDate() | | / | | | . | retriesRemaing() > 0 | | . . . updateOK() / \ / | | \ | | v \ v | ------------- ------------ | |ReadyToUpdate| |DownloadFail| | ------------- ------------ | \ \ | \ \ | . . . | retriesRemaing() = 0 \ updateHeaders() | \ | . \ . / \ / | \ | updateFail() retriesRemaining() = 0 v \ v .-------------------------------------. .----------------------------------------. .------------. ---------------- / `-> ---------- / `->. ------------ . |UpdateInProgress| |UpdateFail| || SyncFailed || ---------------- <- / ---------- ' ------------ ' `--------------------------------------' '------------' retriesRemaing() > 0