2019-11-16 19:41:04 +00:00
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require "http"
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2019-11-16 19:46:16 +00:00
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require "socket"
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2019-11-16 19:06:55 +00:00
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struct QUIC::PeerCtx
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property socket : UDPSocket
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def initialize(@socket)
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end
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def local_address
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@socket.local_address
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end
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def remote_address
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@socket.remote_address
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end
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end
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struct QUIC::StreamCtx
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property requests : Array(HTTP::Request)
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property io : IO
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def initialize
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@requests = [] of HTTP::Request
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@io = IO::Memory.new
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end
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end
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class QUIC::Client
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ENGINE_FLAGS = LibLsquic::LSENG_HTTP
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LibLsquic.global_init(ENGINE_FLAGS & LibLsquic::LSENG_SERVER ? LibLsquic::GLOBAL_SERVER : LibLsquic::GLOBAL_CLIENT)
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# The set of possible valid body types.
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alias BodyType = String | Bytes | IO | Nil
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getter host : String
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getter port : Int32
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getter! tls : OpenSSL::SSL::Context::Client
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@conn : LibLsquic::ConnT | Nil
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@engine : LibLsquic::EngineT | Nil
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2019-11-16 19:46:16 +00:00
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@engine : LibLsquic::EngineT | Nil
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@engine_api : LibLsquic::EngineApi
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2019-11-16 19:06:55 +00:00
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@engine_settings : LibLsquic::EngineSettings
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2019-11-16 19:46:16 +00:00
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@peer_ctx : PeerCtx | Nil
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@stream_ctx : StreamCtx
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2019-11-16 19:06:55 +00:00
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@stream_if : LibLsquic::StreamIf
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@dns_timeout : Float64?
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@connect_timeout : Float64?
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@read_timeout : Float64?
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def initialize(@host : String, port = nil, tls : Bool | OpenSSL::SSL::Context::Client = false)
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check_host_only(@host)
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@tls = case tls
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when true
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OpenSSL::SSL::Context::Client.new
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when OpenSSL::SSL::Context::Client
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tls
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when false
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nil
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end
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@port = (port || 443).to_i
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LibLsquic.engine_init_settings(out @engine_settings, ENGINE_FLAGS)
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@engine_settings.es_ua = "Chrome/78.0.3904.97 Linux x86_64"
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@engine_settings.es_ecn = 0
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err_buf = Bytes.new(0x100)
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err_code = LibLsquic.engine_check_settings(pointerof(@engine_settings), ENGINE_FLAGS, err_buf, err_buf.size)
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raise String.new(err_buf) if err_code != 0
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@stream_if = LibLsquic::StreamIf.new
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@stream_if.on_new_conn = ->(stream_if_ctx : Void*, c : LibLsquic::ConnT) { stream_if_ctx }
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@stream_if.on_conn_closed = ->(c : LibLsquic::ConnT) do
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Box.box(nil)
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end
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@stream_if.on_new_stream = ->(stream_if_ctx : Void*, s : LibLsquic::StreamT) do
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if LibLsquic.stream_is_pushed(s) != 0
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return stream_if_ctx
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end
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LibLsquic.stream_wantwrite(s, 1)
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stream_if_ctx
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end
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@stream_if.on_write = ->(s : LibLsquic::StreamT, stream_if_ctx : Void*) do
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request = Box(StreamCtx).unbox(stream_if_ctx).requests.shift
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raise "No request" if !request
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headers = [] of LibLsquic::HttpHeader
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(request.headers.to_a.sort_by { |k, v| {":authority", ":path", ":scheme", ":method"}.index(k) || -1 }).reverse.each do |tuple|
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name, values = tuple
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name = name.downcase
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values.each do |value|
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name_vec = LibLsquic::Iovec.new
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name_vec.iov_base = name.to_slice
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name_vec.iov_len = name.bytesize
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value_vec = LibLsquic::Iovec.new
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value_vec.iov_base = value.to_slice
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value_vec.iov_len = value.bytesize
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header = LibLsquic::HttpHeader.new
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header.name = name_vec
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header.value = value_vec
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headers << header
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end
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end
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http_headers = LibLsquic::HttpHeaders.new
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http_headers.count = headers.size
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http_headers.headers = headers.to_unsafe
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# For payload, last argument is 0
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raise "Could not send headers" if LibLsquic.stream_send_headers(s, pointerof(http_headers), request.body ? 0 : 1) != 0
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if request.body
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body = request.body.not_nil!.gets_to_end
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LibLsquic.stream_write(s, body, body.bytesize)
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LibLsquic.stream_flush(s)
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end
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LibLsquic.stream_shutdown(s, 1)
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LibLsquic.stream_wantwrite(s, 0)
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LibLsquic.stream_wantread(s, 1)
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stream_if_ctx
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end
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@stream_if.on_read = ->(s : LibLsquic::StreamT, stream_if_ctx : Void*) do
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stream_ctx = Box(StreamCtx).unbox(stream_if_ctx)
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buffer = Bytes.new(0x200)
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bytes_read = LibLsquic.stream_read(s, buffer, buffer.size)
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if bytes_read > 0
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stream_ctx.io.write buffer[0, bytes_read]
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elsif bytes_read == 0
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LibLsquic.stream_shutdown(s, 0)
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elsif LibLsquic.stream_is_rejected(s)
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LibLsquic.stream_close(s)
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else
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raise "Could not read stream"
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end
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stream_if_ctx
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end
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# TODO: Allow engine to break with existing connections
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@stream_if.on_close = ->(s : LibLsquic::StreamT, stream_if_ctx : Void*) do
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LibLsquic.conn_close(LibLsquic.stream_conn(s))
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stream_if_ctx
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end
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@engine_api = LibLsquic::EngineApi.new
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@engine_api.ea_settings = pointerof(@engine_settings)
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@engine_api.ea_stream_if = pointerof(@stream_if)
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@stream_ctx = StreamCtx.new
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@engine_api.ea_stream_if_ctx = Box.box(@stream_ctx) # TODO
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@engine_api.ea_packets_out = ->(peer_ctx : Void*, specs : LibLsquic::OutSpec*, count : LibC::UInt) do
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packets_out = 0
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count.times do |i|
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spec = specs[i]
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peer_ctx = Box(PeerCtx).unbox(spec.peer_ctx)
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spec.iovlen.times do |j|
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iov = spec.iov[j]
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begin
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peer_ctx.socket.send(iov.iov_base.to_slice(iov.iov_len), to: peer_ctx.remote_address)
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packets_out += 1
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rescue ex
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end
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end
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end
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packets_out
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end
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end
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private def check_host_only(string : String)
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# When parsing a URI with just a host
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# we end up with a URI with just a path
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uri = URI.parse(string)
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if uri.scheme || uri.host || uri.port || uri.query || uri.user || uri.password || uri.path.includes?('/')
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raise_invalid_host(string)
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end
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rescue URI::Error
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raise_invalid_host(string)
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end
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private def raise_invalid_host(string : String)
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raise ArgumentError.new("The string passed to create an HTTP::Client must be just a host, not #{string.inspect}")
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end
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def self.new(uri : URI, tls = nil)
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tls = tls_flag(uri, tls)
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host = validate_host(uri)
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new(host, uri.port, tls)
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end
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def self.new(uri : URI, tls = nil)
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tls = tls_flag(uri, tls)
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host = validate_host(uri)
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client = new(host, uri.port, tls)
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begin
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yield client
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ensure
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client.close
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end
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end
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def self.new(host : String, port = nil, tls = false)
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client = new(host, port, tls)
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begin
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yield client
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ensure
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client.close
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end
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end
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# Configures this client to perform basic authentication in every
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# request.
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def basic_auth(username, password)
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header = "Basic #{Base64.strict_encode("#{username}:#{password}")}"
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before_request do |request|
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request.headers["Authorization"] = header
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end
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end
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def read_timeout=(read_timeout : Number)
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@read_timeout = read_timeout.to_f
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end
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def read_timeout=(read_timeout : Time::Span)
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self.read_timeout = read_timeout.total_seconds
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end
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def connect_timeout=(connect_timeout : Number)
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@connect_timeout = connect_timeout.to_f
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end
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def connect_timeout=(connect_timeout : Time::Span)
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self.connect_timeout = connect_timeout.total_seconds
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end
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def dns_timeout=(dns_timeout : Number)
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@dns_timeout = dns_timeout.to_f
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end
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def dns_timeout=(dns_timeout : Time::Span)
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self.dns_timeout = dns_timeout.total_seconds
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end
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def before_request(&callback : HTTP::Request ->)
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before_request = @before_request ||= [] of (HTTP::Request ->)
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before_request << callback
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end
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{% for method in %w(get post put head delete patch options) %}
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def {{method.id}}(path, headers : HTTP::Headers? = nil, body : BodyType = nil) : HTTP::Client::Response
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exec {{method.upcase}}, path, headers, body
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end
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def {{method.id}}(path, headers : HTTP::Headers? = nil, body : BodyType = nil)
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exec {{method.upcase}}, path, headers, body do |response|
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yield response
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end
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end
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def self.{{method.id}}(url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil) : HTTP::Client::Response
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exec {{method.upcase}}, url, headers, body, tls
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end
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def self.{{method.id}}(url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil)
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exec {{method.upcase}}, url, headers, body, tls do |response|
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yield response
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end
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end
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def {{method.id}}(path, headers : HTTP::Headers? = nil, *, form : String | IO) : HTTP::Client::Response
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request = new_request({{method.upcase}}, path, headers, form)
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request.headers["Content-Type"] = "application/x-www-form-urlencoded"
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exec request
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end
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def {{method.id}}(path, headers : HTTP::Headers? = nil, *, form : String | IO)
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request = new_request({{method.upcase}}, path, headers, form)
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request.headers["Content-Type"] = "application/x-www-form-urlencoded"
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exec(request) do |response|
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yield response
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end
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end
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def {{method.id}}(path, headers : HTTP::Headers? = nil, *, form : Hash(String, String) | NamedTuple) : HTTP::Client::Response
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body = HTTP::Params.encode(form)
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{{method.id}} path, form: body, headers: headers
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end
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def {{method.id}}(path, headers : HTTP::Headers? = nil, *, form : Hash(String, String) | NamedTuple)
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body = HTTP::Params.encode(form)
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{{method.id}}(path, form: body, headers: headers) do |response|
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yield response
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end
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end
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def self.{{method.id}}(url, headers : HTTP::Headers? = nil, tls = nil, *, form : String | IO | Hash) : HTTP::Client::Response
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exec(url, tls) do |client, path|
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client.{{method.id}}(path, form: form, headers: headers)
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end
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end
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def self.{{method.id}}(url, headers : HTTP::Headers? = nil, tls = nil, *, form : String | IO | Hash)
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exec(url, tls) do |client, path|
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client.{{method.id}}(path, form: form, headers: headers) do |response|
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yield response
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end
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end
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end
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{% end %}
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def exec(request : HTTP::Request) : HTTP::Client::Response
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exec_internal(request)
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end
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private def exec_internal(request)
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response = exec_internal_single(request)
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return handle_response(response) if response
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# Server probably closed the connection, so retry one
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close
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request.body.try &.rewind
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response = exec_internal_single(request)
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return handle_response(response) if response
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raise "Unexpected end of http response"
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end
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private def exec_internal_single(request)
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send_request(request)
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@stream_ctx.io.rewind
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HTTP::Client::Response.from_io?(@stream_ctx.io, ignore_body: request.ignore_body?)
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end
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private def handle_response(response)
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close # unless response.keep_alive?
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response
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end
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def exec(request : HTTP::Request, &block)
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exec_internal(request) do |response|
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yield response
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end
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end
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2019-11-16 19:41:04 +00:00
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private def exec_internal(request, &block : HTTP::Client::Response -> T) : T forall T
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2019-11-16 19:06:55 +00:00
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exec_internal_single(request) do |response|
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if response
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return handle_response(response) { yield response }
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end
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# Server probably closed the connection, so retry once
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close
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request.body.try &.rewind
|
|
|
|
exec_internal_single(request) do |response|
|
|
|
|
if response
|
|
|
|
return handle_response(response) do
|
|
|
|
yield response
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
raise "Unexpected end of http response"
|
|
|
|
end
|
|
|
|
|
|
|
|
private def exec_internal_single(request)
|
|
|
|
send_request(request)
|
2019-11-16 19:46:16 +00:00
|
|
|
HTTP::Client::Response.from_io?(@stream_ctx.io, ignore_body: request.ignore_body?) do |response|
|
2019-11-16 19:06:55 +00:00
|
|
|
yield response
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
private def handle_response(response)
|
|
|
|
value = yield
|
|
|
|
response.body_io?.try &.close
|
|
|
|
close # unless response.keep_alive?
|
|
|
|
value
|
|
|
|
end
|
|
|
|
|
|
|
|
private def send_request(request)
|
|
|
|
set_defaults request
|
|
|
|
run_before_request_callbacks(request)
|
|
|
|
|
|
|
|
@stream_ctx.requests << request
|
|
|
|
LibLsquic.conn_make_stream(conn)
|
|
|
|
|
|
|
|
run_engine
|
|
|
|
end
|
|
|
|
|
|
|
|
private def set_defaults(request)
|
|
|
|
request.headers[":method"] ||= request.method
|
|
|
|
request.headers[":scheme"] ||= "https"
|
|
|
|
request.headers[":path"] ||= request.resource
|
|
|
|
request.headers[":authority"] ||= host_header
|
|
|
|
request.headers["user-agent"] ||= "Chrome/78.0.3904.97 Linux x86_64"
|
|
|
|
end
|
|
|
|
|
|
|
|
private def self.default_one_shot_headers(headers)
|
|
|
|
headers ||= HTTP::Headers.new
|
|
|
|
headers["Connection"] ||= "close"
|
|
|
|
headers
|
|
|
|
end
|
|
|
|
|
|
|
|
private def run_before_request_callbacks(request)
|
|
|
|
@before_request.try &.each &.call(request)
|
|
|
|
end
|
|
|
|
|
|
|
|
def exec(method : String, path, headers : HTTP::Headers? = nil, body : BodyType = nil) : HTTP::Client::Response
|
|
|
|
exec new_request method, path, headers, body
|
|
|
|
end
|
|
|
|
|
|
|
|
def exec(method : String, path, headers : HTTP::Headers? = nil, body : BodyType = nil)
|
|
|
|
exec(new_request(method, path, headers, body)) do |response|
|
|
|
|
yield response
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def self.exec(method, url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil) : HTTP::Client::Response
|
|
|
|
headers = default_one_shot_headers(headers)
|
|
|
|
exec(url, tls) do |client, path|
|
|
|
|
client.exec method, path, headers, body
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def self.exec(method, url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil)
|
|
|
|
headers = default_one_shot_headers(headers)
|
|
|
|
exec(url, tls) do |client, path|
|
|
|
|
client.exec(method, path, headers, body) do |response|
|
|
|
|
yield response
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def close
|
|
|
|
# @conn.try { |c| LibLsquic.conn_close(c) }
|
|
|
|
@conn = nil
|
|
|
|
end
|
|
|
|
|
|
|
|
private def new_request(method, path, headers, body : BodyType)
|
|
|
|
HTTP::Request.new(method, path, headers, body)
|
|
|
|
end
|
|
|
|
|
|
|
|
private def engine
|
|
|
|
engine = @engine
|
|
|
|
return engine if engine
|
|
|
|
|
|
|
|
engine = LibLsquic.engine_new(ENGINE_FLAGS, pointerof(@engine_api))
|
|
|
|
@engine = engine
|
|
|
|
end
|
|
|
|
|
|
|
|
def run_engine
|
|
|
|
buffer = Bytes.new(0x600)
|
|
|
|
|
|
|
|
loop do
|
|
|
|
LibLsquic.engine_process_conns(engine)
|
|
|
|
|
|
|
|
if LibLsquic.engine_earliest_adv_tick(engine, out diff) == 0
|
|
|
|
break
|
|
|
|
# else
|
|
|
|
# sleep (diff / 1000000).seconds
|
|
|
|
# sleep (diff % 1000000).microseconds
|
|
|
|
end
|
|
|
|
|
|
|
|
bytes_read = peer_ctx.socket.read(buffer)
|
|
|
|
LibLsquic.engine_packet_in(engine, buffer[0, bytes_read], bytes_read, peer_ctx.local_address, peer_ctx.remote_address, Box.box(peer_ctx), 0)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
private def peer_ctx
|
|
|
|
peer_ctx = @peer_ctx
|
|
|
|
return peer_ctx if peer_ctx
|
|
|
|
|
|
|
|
hostname = @host.starts_with?('[') && @host.ends_with?(']') ? @host[1..-2] : @host
|
|
|
|
socket = UDPSocket.new
|
|
|
|
socket.bind Socket::IPAddress.new("0.0.0.0", 0)
|
|
|
|
socket.read_timeout = @read_timeout if @read_timeout
|
|
|
|
Socket::Addrinfo.udp(host, port, timeout: @dns_timeout) do |addrinfo|
|
|
|
|
socket.connect(addrinfo, timeout: @connect_timeout) do |error|
|
|
|
|
error
|
|
|
|
end
|
|
|
|
end
|
|
|
|
socket.sync = false
|
|
|
|
|
|
|
|
peer_ctx = PeerCtx.new(socket)
|
|
|
|
@peer_ctx = peer_ctx
|
|
|
|
end
|
|
|
|
|
|
|
|
def conn
|
|
|
|
conn = @conn
|
|
|
|
return conn if conn
|
|
|
|
|
|
|
|
hostname = @host.starts_with?('[') && @host.ends_with?(']') ? @host[1..-2] : @host
|
|
|
|
conn = LibLsquic.engine_connect(engine, LibLsquic::Version::Lsqver046, peer_ctx.local_address, peer_ctx.remote_address, Box.box(peer_ctx), nil, hostname, 0, nil, 0, nil, 0)
|
|
|
|
@conn = conn
|
|
|
|
end
|
|
|
|
|
|
|
|
private def host_header
|
|
|
|
if (@tls && @port != 443) || (!@tls && @port != 80)
|
|
|
|
"#{@host}:#{@port}"
|
|
|
|
else
|
|
|
|
@host
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
private def self.exec(string : String, tls = nil)
|
|
|
|
uri = URI.parse(string)
|
|
|
|
|
|
|
|
unless uri.scheme && uri.host
|
|
|
|
# Assume http if no scheme and host are specified
|
|
|
|
uri = URI.parse("http://#{string}")
|
|
|
|
end
|
|
|
|
|
|
|
|
exec(uri, tls) do |client, path|
|
|
|
|
yield client, path
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
protected def self.tls_flag(uri, context : OpenSSL::SSL::Context::Client?)
|
|
|
|
scheme = uri.scheme
|
|
|
|
case {scheme, context}
|
|
|
|
when {nil, _}
|
|
|
|
raise ArgumentError.new("Missing scheme: #{uri}")
|
|
|
|
when {"http", nil}
|
|
|
|
false
|
|
|
|
when {"http", OpenSSL::SSL::Context::Client}
|
|
|
|
raise ArgumentError.new("TLS context given for HTTP URI")
|
|
|
|
when {"https", nil}
|
|
|
|
true
|
|
|
|
when {"https", OpenSSL::SSL::Context::Client}
|
|
|
|
context
|
|
|
|
else
|
|
|
|
raise ArgumentError.new "Unsupported scheme: #{scheme}"
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
protected def self.validate_host(uri)
|
|
|
|
host = uri.host
|
|
|
|
return host if host && !host.empty?
|
|
|
|
|
|
|
|
raise ArgumentError.new %(Request URI must have host (URI is: #{uri}))
|
|
|
|
end
|
|
|
|
|
|
|
|
private def self.exec(uri : URI, tls = nil)
|
|
|
|
tls = tls_flag(uri, tls)
|
|
|
|
host = validate_host(uri)
|
|
|
|
|
|
|
|
port = uri.port
|
|
|
|
path = uri.full_path
|
|
|
|
user = uri.user
|
|
|
|
password = uri.password
|
|
|
|
|
|
|
|
HTTP::Client.new(host, port, tls) do |client|
|
|
|
|
if user && password
|
|
|
|
client.basic_auth(user, password)
|
|
|
|
end
|
|
|
|
yield client, path
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|