Swift 6.4 migration and exhancements (#1)
This PR contains the work done to update the library and the attached example project to use the Swift 6.4 computer as a minimum supported version and also, to use the latest features introduced in it. Reviewed-on: #1 Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
This commit was merged in pull request #1.
This commit is contained in:
@@ -4,11 +4,9 @@ internal import CPlaydate
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private var httpAPI: UnsafePointer<playdate_http> { Playdate.httpAPI.unsafelyUnwrapped }
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extension Network {
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/// An HTTP connection to a server. Wraps `HTTPConnection`.
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///
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/// The binding stores a back-reference to each wrapper in the
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/// underlying object's userdata slot so callbacks can recover the
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/// wrapper; the C userdata slot is therefore reserved by the binding.
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/// An HTTP connection. Wraps `HTTPConnection`; methods throw `Network.NetError`.
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/// Callbacks don't retain it: keep it referenced until they fire, as `deinit`
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/// drops pending callbacks and releases the C connection.
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public final class HTTPConnection {
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let pointer: OpaquePointer
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@@ -18,8 +16,8 @@ extension Network {
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var requestCompleteCallback: ((HTTPConnection) -> Void)?
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var connectionClosedCallback: ((HTTPConnection) -> Void)?
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/// Requests permission to connect to `server`. If the reply is
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/// `.ask`, the completion is called later with the user's answer.
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/// Asks to connect to `server` and its subdomains; call before `init`.
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/// `purpose` appears in the dialog; `completion` runs only if the reply is `.ask`.
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@discardableResult
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public static func requestAccess(server: String, port: Int = 443, useSSL: Bool = true,
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purpose: String? = nil,
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@@ -30,10 +28,9 @@ extension Network {
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completion: completion)
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}
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/// Opens a connection to `server`. Fails if access has not been
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/// granted.
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/// Sends nothing until a request. `nil` if access is denied or not yet granted.
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public init?(server: String, port: Int = 443, useSSL: Bool = true) {
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let pointer = server.withPlaydateCString {
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let pointer = server.withCString {
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httpAPI.pointee.newConnection.unsafelyUnwrapped($0, Int32(port), useSSL)
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}
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guard let pointer else { return nil }
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@@ -54,48 +51,48 @@ extension Network {
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// MARK: Configuration
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/// The time to wait for the connection to open, in milliseconds.
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/// Connect timeout, in ms.
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public func setConnectTimeout(milliseconds: Int) {
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httpAPI.pointee.setConnectTimeout.unsafelyUnwrapped(pointer, Int32(milliseconds))
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}
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/// Whether to keep the connection open after a request completes.
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/// Whether requests send `Connection: keep-alive`.
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public func setKeepAlive(_ keepAlive: Bool) {
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httpAPI.pointee.setKeepAlive.unsafelyUnwrapped(pointer, keepAlive)
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}
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/// Adds a `Range: bytes=start-end` header to future requests.
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/// Adds a `Range: bytes=start-end` header.
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public func setByteRange(start: Int, end: Int) {
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httpAPI.pointee.setByteRange.unsafelyUnwrapped(pointer, Int32(start), Int32(end))
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}
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/// The time to wait for incoming data, in milliseconds.
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/// How long `read` waits for data, in ms (default 1000).
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public func setReadTimeout(milliseconds: Int) {
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httpAPI.pointee.setReadTimeout.unsafelyUnwrapped(pointer, Int32(milliseconds))
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}
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/// The size of the connection's read buffer, in bytes.
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/// Read buffer size, in bytes (default 64 KB).
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public func setReadBufferSize(bytes: Int) {
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httpAPI.pointee.setReadBufferSize.unsafelyUnwrapped(pointer, Int32(bytes))
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}
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// MARK: Requests
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/// Sends a GET request for `path`. `headers` are raw header lines
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/// (e.g. "Accept: text/html\r\n").
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/// GETs `path`, opening the connection if needed. `headers` are extra raw
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/// header lines (e.g. "Accept: text/html\r\n").
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public func get(path: String, headers: String = "") throws(NetError) {
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let error = path.withPlaydateCString { cPath in
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headers.withPlaydateCString { cHeaders in
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let error = path.withCString { cPath in
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headers.withCString { cHeaders in
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httpAPI.pointee.get.unsafelyUnwrapped(pointer, cPath, cHeaders, headers.utf8.count)
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}
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}
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try Network.check(error)
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}
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/// Sends a POST request for `path` with the given body.
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/// POSTs `body` to `path`; otherwise like `get`.
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public func post(path: String, headers: String = "", body: [UInt8]) throws(NetError) {
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let error = path.withPlaydateCString { cPath in
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headers.withPlaydateCString { cHeaders in
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let error = path.withCString { cPath in
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headers.withCString { cHeaders in
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body.withUnsafeBytes { bodyBuffer in
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httpAPI.pointee.post.unsafelyUnwrapped(
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pointer, cPath, cHeaders, headers.utf8.count,
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@@ -107,12 +104,12 @@ extension Network {
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try Network.check(error)
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}
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/// Sends a request with an arbitrary HTTP method.
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/// Sends a `method` request; otherwise like `post`.
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public func query(method: String, path: String, headers: String = "",
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body: [UInt8] = []) throws(NetError) {
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let error = method.withPlaydateCString { cMethod in
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path.withPlaydateCString { cPath in
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headers.withPlaydateCString { cHeaders in
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let error = method.withCString { cMethod in
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path.withCString { cPath in
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headers.withCString { cHeaders in
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body.withUnsafeBytes { bodyBuffer in
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httpAPI.pointee.query.unsafelyUnwrapped(
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pointer, cMethod, cPath, cHeaders, headers.utf8.count,
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@@ -127,61 +124,63 @@ extension Network {
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// MARK: Response
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/// The last error on the connection, if any.
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/// The connection's last error, if any.
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public var error: NetError? {
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Network.optionalError(httpAPI.pointee.getError.unsafelyUnwrapped(pointer))
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}
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/// The number of bytes read of the current response, and the total
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/// expected (0 if the response has no Content-Length).
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/// Response bytes read so far, and the total expected if known.
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public var progress: (read: Int, total: Int) {
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var read: Int32 = 0, total: Int32 = 0
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httpAPI.pointee.getProgress.unsafelyUnwrapped(pointer, &read, &total)
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return (Int(read), Int(total))
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}
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/// The HTTP status code of the response.
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/// HTTP status code, valid once headers are parsed.
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public var responseStatus: Int {
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Int(httpAPI.pointee.getResponseStatus.unsafelyUnwrapped(pointer))
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}
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/// The number of response bytes available to read.
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/// Response bytes available to read.
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public var bytesAvailable: Int {
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Int(httpAPI.pointee.getBytesAvailable.unsafelyUnwrapped(pointer))
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}
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/// Reads up to `buffer.count` response bytes. Returns the number of
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/// bytes read.
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public func read(into buffer: UnsafeMutableRawBufferPointer) throws(NetError) -> Int {
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let result = httpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress,
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UInt32(buffer.count))
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/// Reads up to `buffer.count` bytes (capped by the read buffer size), waiting
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/// up to the read timeout. Returns the count read.
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public func read(into buffer: inout MutableSpan<UInt8>) throws(NetError) -> Int {
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let result = buffer.withUnsafeMutableBufferPointer { buffer in
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httpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress, UInt32(buffer.count))
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}
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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return Int(result)
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}
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/// Reads up to `length` available response bytes.
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/// Like `read(into:)`, returning the bytes read.
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public func read(length: Int) throws(NetError) -> [UInt8] {
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var bytes = [UInt8](repeating: 0, count: length)
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let result = bytes.withUnsafeMutableBytes { buffer in
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httpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress, UInt32(buffer.count))
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try [UInt8](capacity: length) { output throws(NetError) in
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let result = output.withUnsafeMutableBufferPointer { buffer, initializedCount in
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let result = httpAPI.pointee.read.unsafelyUnwrapped(
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pointer, buffer.baseAddress, UInt32(buffer.count))
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initializedCount = max(Int(result), 0)
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return result
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}
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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}
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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bytes.removeLast(length - Int(result))
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return bytes
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}
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/// Closes the connection.
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/// Closes the connection; it can be reused for another request.
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public func close() {
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httpAPI.pointee.close.unsafelyUnwrapped(pointer)
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}
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// MARK: Callbacks
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/// Called for each header line as it arrives.
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/// Called per response header line. `nil` removes it.
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public func setHeaderReceivedCallback(_ callback: ((HTTPConnection, _ key: String, _ value: String) -> Void)?) {
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headerReceivedCallback = callback
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if callback != nil {
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@@ -196,7 +195,8 @@ extension Network {
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}
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}
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/// Called when all headers have been read.
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/// Called once headers are parsed, making `responseStatus` and `progress` valid.
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/// `nil` removes it.
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public func setHeadersReadCallback(_ callback: ((HTTPConnection) -> Void)?) {
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headersReadCallback = callback
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if callback != nil {
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@@ -209,7 +209,7 @@ extension Network {
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}
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}
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/// Called when response data is available to read.
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/// Called when response data is available to read. `nil` removes it.
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public func setResponseCallback(_ callback: ((HTTPConnection) -> Void)?) {
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responseCallback = callback
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if callback != nil {
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@@ -222,7 +222,7 @@ extension Network {
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}
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}
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/// Called when the request finishes.
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/// Called when all data arrives (size known) or the request times out. `nil` removes it.
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public func setRequestCompleteCallback(_ callback: ((HTTPConnection) -> Void)?) {
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requestCompleteCallback = callback
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if callback != nil {
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@@ -235,7 +235,7 @@ extension Network {
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}
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}
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/// Called when the connection closes.
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/// Called when the server closes the connection. `nil` removes it.
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public func setConnectionClosedCallback(_ callback: ((HTTPConnection) -> Void)?) {
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connectionClosedCallback = callback
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if callback != nil {
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@@ -4,19 +4,17 @@ internal import CPlaydate
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private var tcpAPI: UnsafePointer<playdate_tcp> { Playdate.tcpAPI.unsafelyUnwrapped }
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extension Network {
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/// A TCP connection to a server. Wraps `TCPConnection`.
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///
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/// The binding stores a back-reference to each wrapper in the
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/// underlying object's userdata slot so callbacks can recover the
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/// wrapper; the C userdata slot is therefore reserved by the binding.
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/// A TCP connection. Wraps `TCPConnection`; methods throw `Network.NetError`.
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/// Callbacks don't retain it: keep it referenced until they fire, as `deinit`
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/// drops pending callbacks and releases the C connection.
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public final class TCPConnection {
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let pointer: OpaquePointer
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var openCompletion: ((TCPConnection, NetError?) -> Void)?
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var connectionClosedCallback: ((TCPConnection, NetError?) -> Void)?
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/// Requests permission to connect to `server`. If the reply is
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/// `.ask`, the completion is called later with the user's answer.
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/// Asks to connect to `server`; call before `init`. `purpose` appears in
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/// the dialog; `completion` runs only if the reply is `.ask`.
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@discardableResult
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public static func requestAccess(server: String, port: Int, useSSL: Bool = true,
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purpose: String? = nil,
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@@ -27,10 +25,9 @@ extension Network {
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completion: completion)
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}
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/// Creates a connection to `server`. Fails if access has not been
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/// granted. Call `open(_:)` to connect.
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/// Does nothing until `open(_:)`. `nil` if access is denied or not yet granted.
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public init?(server: String, port: Int, useSSL: Bool = true) {
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let pointer = server.withPlaydateCString {
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let pointer = server.withCString {
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tcpAPI.pointee.newConnection.unsafelyUnwrapped($0, Int32(port), useSSL)
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}
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guard let pointer else { return nil }
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@@ -49,17 +46,17 @@ extension Network {
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return Unmanaged<TCPConnection>.fromOpaque(userdata).takeUnretainedValue()
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}
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/// The last error on the connection, if any.
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/// The connection's last error, if any.
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public var error: NetError? {
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Network.optionalError(tcpAPI.pointee.getError.unsafelyUnwrapped(pointer))
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}
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/// The time to wait for the connection to open, in milliseconds.
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/// Connect timeout, in ms.
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public func setConnectTimeout(milliseconds: Int) {
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tcpAPI.pointee.setConnectTimeout.unsafelyUnwrapped(pointer, Int32(milliseconds))
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}
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/// Opens the connection. The completion receives `nil` on success.
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/// Errors are thrown immediately or passed to `completion` (`nil` on success).
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public func open(_ completion: @escaping (TCPConnection, NetError?) -> Void) throws(NetError) {
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openCompletion = completion
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let error = tcpAPI.pointee.open.unsafelyUnwrapped(pointer, { connection, error, _ in
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@@ -71,13 +68,12 @@ extension Network {
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try Network.check(error)
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}
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/// Closes the connection.
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/// Closes the connection; it can be reused.
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public func close() throws(NetError) {
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try Network.check(tcpAPI.pointee.close.unsafelyUnwrapped(pointer))
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}
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/// Called when the connection closes, with the reason if it closed
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/// due to an error.
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/// Called on close with the error, if any; `nil` removes it.
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public func setConnectionClosedCallback(_ callback: ((TCPConnection, NetError?) -> Void)?) {
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connectionClosedCallback = callback
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if callback != nil {
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@@ -90,65 +86,55 @@ extension Network {
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}
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}
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/// The time to wait for incoming data, in milliseconds.
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/// How long `read` waits for data, in ms (default 1000).
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public func setReadTimeout(milliseconds: Int) {
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tcpAPI.pointee.setReadTimeout.unsafelyUnwrapped(pointer, Int32(milliseconds))
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}
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/// The size of the connection's read buffer, in bytes.
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/// Read buffer size, in bytes (default 64 KB).
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public func setReadBufferSize(bytes: Int) {
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tcpAPI.pointee.setReadBufferSize.unsafelyUnwrapped(pointer, Int32(bytes))
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}
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/// The number of bytes available to read.
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/// Bytes available to read.
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public var bytesAvailable: Int {
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Int(tcpAPI.pointee.getBytesAvailable.unsafelyUnwrapped(pointer))
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}
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/// The number of written bytes not yet sent on the wire.
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/// Written bytes not yet sent.
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public var sentBytesPending: Int {
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Int(tcpAPI.pointee.getSentBytesPending.unsafelyUnwrapped(pointer))
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}
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/// Reads up to `buffer.count` bytes, waiting up to the read timeout.
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/// Returns the number of bytes read.
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public func read(into buffer: UnsafeMutableRawBufferPointer) throws(NetError) -> Int {
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let result = tcpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress, buffer.count)
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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return Int(result)
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}
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/// Reads up to `length` bytes, waiting up to the read timeout.
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public func read(length: Int) throws(NetError) -> [UInt8] {
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var bytes = [UInt8](repeating: 0, count: length)
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let result = bytes.withUnsafeMutableBytes { buffer in
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/// Reads up to `buffer.count` bytes within the read timeout; returns the count.
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public func read(into buffer: inout MutableSpan<UInt8>) throws(NetError) -> Int {
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let result = buffer.withUnsafeMutableBufferPointer { buffer in
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tcpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress, buffer.count)
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}
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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bytes.removeLast(length - Int(result))
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return bytes
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}
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/// Writes the buffer to the connection. Returns the number of bytes
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/// accepted.
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@discardableResult
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public func write(_ buffer: UnsafeRawBufferPointer) throws(NetError) -> Int {
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let result = tcpAPI.pointee.write.unsafelyUnwrapped(pointer, buffer.baseAddress, buffer.count)
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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return Int(result)
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}
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/// Writes the bytes to the connection. Returns the number of bytes
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/// accepted.
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/// Like `read(into:)`, returning the bytes read.
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public func read(length: Int) throws(NetError) -> [UInt8] {
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try [UInt8](capacity: length) { output throws(NetError) in
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let result = output.withUnsafeMutableBufferPointer { buffer, initializedCount in
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let result = tcpAPI.pointee.read.unsafelyUnwrapped(pointer, buffer.baseAddress, buffer.count)
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initializedCount = max(Int(result), 0)
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return result
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}
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if result < 0 {
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throw NetError(rawValue: result) ?? .unknown
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}
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}
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}
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/// Queues `bytes`; returns the count handed to the network stack.
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@discardableResult
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public func write(_ bytes: [UInt8]) throws(NetError) -> Int {
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let result = bytes.withUnsafeBytes { buffer in
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public func write(_ bytes: Span<UInt8>) throws(NetError) -> Int {
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let result = bytes.withUnsafeBufferPointer { buffer in
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tcpAPI.pointee.write.unsafelyUnwrapped(pointer, buffer.baseAddress, buffer.count)
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}
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if result < 0 {
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@@ -156,5 +142,13 @@ extension Network {
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}
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return Int(result)
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}
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/// Same as the `Span` overload.
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@discardableResult
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public func write(_ bytes: [UInt8]) throws(NetError) -> Int {
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try bytes.withUnsafeBufferPointer { buffer throws(NetError) in
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try write(buffer.span)
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}
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}
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}
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}
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Reference in New Issue
Block a user