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Allow WebSocket maxFrameSize to be configured #2195

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merged 2 commits into from Mar 12, 2020
Merged

Allow WebSocket maxFrameSize to be configured #2195

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fa1a69f
Allow WebSocket maxFrameSize to be configured.
bridger Feb 23, 2020
2157162
Change maxFrameSize to an enum instead of optional.
bridger Mar 12, 2020
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2 changes: 1 addition & 1 deletion Sources/Vapor/Response/Response.swift
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Expand Up @@ -33,7 +33,7 @@ public final class Response: CustomStringConvertible {
}

internal enum Upgrader {
case webSocket(onUpgrade: (WebSocket) -> ())
case webSocket(maxFrameSize: WebSocketMaxFrameSize, onUpgrade: (WebSocket) -> ())
}

internal var upgrader: Upgrader?
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8 changes: 7 additions & 1 deletion Sources/Vapor/Routing/RoutesBuilder+WebSocket.swift
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@@ -1,12 +1,18 @@
public enum WebSocketMaxFrameSize {
case `default`
case override(Int)
}

extension RoutesBuilder {
@discardableResult
public func webSocket(
_ path: PathComponent...,
maxFrameSize: WebSocketMaxFrameSize = .`default`,
onUpgrade: @escaping (Request, WebSocket) -> ()
) -> Route {
return self.on(.GET, path) { request -> Response in
let res = Response(status: .switchingProtocols)
res.upgrader = .webSocket(onUpgrade: { ws in
res.upgrader = .webSocket(maxFrameSize: maxFrameSize, onUpgrade: { ws in
onUpgrade(request, ws)
})
return res
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11 changes: 9 additions & 2 deletions Sources/Vapor/Server/HTTPServerUpgradeHandler.swift
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Expand Up @@ -51,8 +51,15 @@ final class HTTPServerUpgradeHandler: ChannelDuplexHandler, RemovableChannelHand
self.upgradeState = .upgraded
if res.status == .switchingProtocols, let upgrader = res.upgrader {
switch upgrader {
case .webSocket(let onUpgrade):
let webSocketUpgrader = NIOWebSocketServerUpgrader(automaticErrorHandling: false, shouldUpgrade: { channel, _ in
case .webSocket(let maxFrameSize, let onUpgrade):
let maxFrameSizeBytes: Int
switch maxFrameSize {
case .`default`:
maxFrameSizeBytes = 1 << 14
case .override(let bytes):
maxFrameSizeBytes = bytes
}
let webSocketUpgrader = NIOWebSocketServerUpgrader(maxFrameSize: maxFrameSizeBytes, automaticErrorHandling: false, shouldUpgrade: { channel, _ in
return channel.eventLoop.makeSucceededFuture([:])
}, upgradePipelineHandler: { channel, req in
return WebSocket.server(on: channel, onUpgrade: onUpgrade)
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