Concurrent Downloads

[JAJames]

As a user, I want to be able to download Renegade X patch data from multiple sources/mirrors concurrently, so that I can download from multiple sources simultaneously and not be restricted to the bandwidth available by a single mirror.

Acceptance Criteria:

• [ ] As mirrors are added to the mirror queue, pop off mirrors into threads until the desired number of mirrors have been reached
• [x] Current server selection algorithm should remain otherwise untouched
• [x] Users should be downloading from up to 4 sources simultaneously

[JAJames]

My thoughts on this one is that we queue up all of the files into a queue and have 4 worker threads downloading files. Each worker thread has a mirror assigned. For each worker thread, it downloads 1 file at a time and upon completion pops off another file from the queue and begins downloading.

Roughly:

void worker_thread() {
    // Pop mirror off of mirror list

    // While there are files to download
    while (!files.empty()) {
        // Pop file off of list
        // Download file
        // Notify success
    }

    // All files have been downloaded; we're done here
}

Most of this refactor will probably be around WebPatchSource.LoadNew, RxPatcher.ApplyPatchFromWeb, and UpdateServerSelector.SelectHosts

Additionally, we'll either need to display multiple mirrors as the Source on the download UI, or remove the element entirely.

[AlienXAXS]

22

[JAJames]

Closing this issue since the PR was merged