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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2019-11-24 17:16:35 +00:00
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module QUIC
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class StreamCtx
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property request : HTTP::Request
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property io : IO::ChanneledPipe
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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def initialize(@request, @io)
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end
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end
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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class Client
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STREAM_READF = ->(stream_if_ctx : Void*, buf : UInt8*, buf_len : LibC::SizeT, fin : LibC::Int) do
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2019-11-24 19:24:45 +00:00
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begin
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stream_ctx = Box(StreamCtx).unbox(stream_if_ctx)
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stream_ctx.io.write Slice.new(buf, buf_len)
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buf_len
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rescue ex
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0_u64
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end
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2019-11-23 22:35:46 +00:00
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end
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2019-11-24 17:16:35 +00:00
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ON_NEW_STREAM = ->(stream_if_ctx : Void*, s : LibLsquic::StreamT) do
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stream_ctx = LibLsquic.stream_conn(s)
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.try { |c| LibLsquic.conn_get_ctx(c) }
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.try { |c| Box(StreamCtx).unbox(c) }
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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if LibLsquic.stream_is_pushed(s) != 0
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return Box.box(stream_ctx)
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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LibLsquic.stream_wantwrite(s, 1)
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Box.box(stream_ctx)
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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ON_WRITE = ->(s : LibLsquic::StreamT, stream_if_ctx : Void*) do
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stream_ctx = Box(StreamCtx).unbox(stream_if_ctx)
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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headers = [] of LibLsquic::HttpHeader
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(stream_ctx.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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-24 17:16:35 +00:00
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headers << header
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end
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2019-11-23 22:35:46 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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raise "Could not send headers" if LibLsquic.stream_send_headers(s, pointerof(http_headers), stream_ctx.request.body ? 0 : 1) != 0
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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if stream_ctx.request.body
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body = stream_ctx.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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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Box.box(stream_ctx)
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-24 17:16:35 +00:00
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bytes_read = LibLsquic.stream_readf(s, STREAM_READF, Box.box(stream_ctx))
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2019-11-23 22:35:46 +00:00
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2019-11-23 23:16:28 +00:00
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if bytes_read > 0
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# Nothing
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elsif bytes_read == 0
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LibLsquic.stream_shutdown(s, 0)
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LibLsquic.stream_wantread(s, 0)
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2019-11-23 23:16:28 +00:00
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elsif LibLsquic.stream_is_rejected(s) == 1
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LibLsquic.stream_close(s)
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else
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"Could not read response"
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2019-11-23 22:35:46 +00:00
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end
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2019-11-24 17:16:35 +00:00
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2019-11-23 23:16:28 +00:00
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Box.box(stream_ctx)
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2019-11-23 22:35:46 +00:00
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end
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2019-11-24 17:16:35 +00:00
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ON_CLOSE = ->(s : LibLsquic::StreamT, stream_if_ctx : Void*) do
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2019-11-23 23:16:28 +00:00
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stream_ctx = Box(StreamCtx).unbox(stream_if_ctx)
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2019-11-24 17:16:35 +00:00
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stream_ctx.io.close
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2019-11-23 23:16:28 +00:00
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Box.box(stream_ctx)
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end
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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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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socket = Box(UDPSocket).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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socket.send(iov.iov_base.to_slice(iov.iov_len), to: socket.remote_address)
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packets_out += 1
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rescue ex
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end
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2019-11-23 22:35:46 +00:00
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end
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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packets_out
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end
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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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@stream_channel : Channel(StreamCtx?)
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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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@stream_channel = Channel(StreamCtx?).new(20)
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spawn run_engine
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end
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def run_engine
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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) { Box.box(nil) }
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stream_if.on_new_stream = ON_NEW_STREAM
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stream_if.on_write = ON_WRITE
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stream_if.on_read = ON_READ
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stream_if.on_close = ON_CLOSE
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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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engine_api.ea_packets_out = EA_PACKETS_OUT
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# logger_if = LibLsquic::LoggerIf.new
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# logger_if.log_buf = ->(logger_ctx : Void*, msg_buf : LibC::Char*, msg_size : LibC::SizeT) { puts String.new(msg_buf); 0 }
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# LibLsquic.logger_init(pointerof(logger_if), nil, LibLsquic::LoggerTimestampStyle::LltsHhmmssms)
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# LibLsquic.set_log_level("debug")
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engine = LibLsquic.engine_new(ENGINE_FLAGS, pointerof(engine_api))
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hostname = host.starts_with?('[') && host.ends_with?(']') ? host[1..-2] : host
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socket = UDPSocket.new
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socket.bind Socket::IPAddress.new("0.0.0.0", 0)
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socket.read_timeout = @read_timeout if @read_timeout
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Socket::Addrinfo.udp(@host, @port, timeout: @dns_timeout) do |addrinfo|
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socket.connect(addrinfo, timeout: @connect_timeout) do |error|
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error
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end
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end
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socket.sync = false
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engine_closed = false
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conn = LibLsquic.engine_connect(engine, LibLsquic::Version::Lsqver046, socket.local_address, socket.remote_address, Box.box(socket), nil, hostname, 0, nil, 0, nil, 0)
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spawn do
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while stream_ctx = @stream_channel.receive
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LibLsquic.conn_set_ctx(conn, Box.box(stream_ctx))
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LibLsquic.conn_make_stream(conn)
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LibLsquic.engine_process_conns(engine)
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end
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engine_closed = true
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LibLsquic.engine_destroy(engine)
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2019-11-16 19:06:55 +00:00
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end
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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buffer = Bytes.new(0x600)
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loop do
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bytes_read = socket.read buffer
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break if engine_closed
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LibLsquic.engine_packet_in(engine, buffer[0, bytes_read], bytes_read, socket.local_address, socket.remote_address, Box.box(socket), 0) if bytes_read != 0
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2019-11-23 22:35:46 +00:00
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LibLsquic.engine_process_conns(engine)
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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socket.close
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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raise_invalid_host(string)
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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{% for method in %w(get post put head delete patch options) %}
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2019-11-16 19:06:55 +00:00
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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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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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raise "Unexpected end of http response"
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def exec_internal_single(request)
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io = send_request(request)
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HTTP::Client::Response.from_io?(io, ignore_body: request.ignore_body?)
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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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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2019-11-16 19:06:55 +00:00
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end
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end
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2019-11-24 17:16:35 +00:00
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private def exec_internal(request, &block : HTTP::Client::Response -> T) : T forall T
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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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end
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raise "Unexpected end of http response"
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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private def exec_internal_single(request)
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io = send_request(request)
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HTTP::Client::Response.from_io?(io, ignore_body: request.ignore_body?) 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 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def handle_response(response)
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value = yield
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response.body_io?.try &.close
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# close unless response.keep_alive?
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value
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def send_request(request)
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set_defaults request
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run_before_request_callbacks(request)
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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reader, writer = IO::ChanneledPipe.new
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stream_ctx = StreamCtx.new(request, writer)
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@stream_channel.send stream_ctx
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reader
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def set_defaults(request)
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request.headers[":method"] ||= request.method
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request.headers[":scheme"] ||= "https"
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request.headers[":path"] ||= request.resource
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request.headers[":authority"] ||= host_header
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request.headers["user-agent"] ||= "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36"
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def self.default_one_shot_headers(headers)
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headers ||= HTTP::Headers.new
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headers["Connection"] ||= "close"
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headers
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def run_before_request_callbacks(request)
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@before_request.try &.each &.call(request)
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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def exec(method : String, path, headers : HTTP::Headers? = nil, body : BodyType = nil) : HTTP::Client::Response
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exec new_request method, path, headers, body
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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def exec(method : String, path, headers : HTTP::Headers? = nil, body : BodyType = nil)
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exec(new_request(method, path, headers, body)) do |response|
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2019-11-16 19:06:55 +00:00
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yield response
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end
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end
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2019-11-24 17:16:35 +00:00
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def self.exec(method, url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil) : HTTP::Client::Response
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headers = default_one_shot_headers(headers)
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exec(url, tls) do |client, path|
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client.exec method, path, headers, body
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end
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end
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2019-11-23 22:35:46 +00:00
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2019-11-24 17:16:35 +00:00
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def self.exec(method, url : String | URI, headers : HTTP::Headers? = nil, body : BodyType = nil, tls = nil)
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headers = default_one_shot_headers(headers)
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exec(url, tls) do |client, path|
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client.exec(method, 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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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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def destroy_engine
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@stream_channel.send nil
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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def close
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# TODO
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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private def new_request(method, path, headers, body : BodyType)
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HTTP::Request.new(method, path, headers, body)
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def host_header
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if (@tls && @port != 443) || (!@tls && @port != 80)
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"#{@host}:#{@port}"
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else
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@host
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end
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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private def self.exec(string : String, tls = nil)
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uri = URI.parse(string)
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unless uri.scheme && uri.host
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# Assume http if no scheme and host are specified
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uri = URI.parse("http://#{string}")
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end
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exec(uri, tls) do |client, path|
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yield client, path
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end
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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protected def self.tls_flag(uri, context : OpenSSL::SSL::Context::Client?)
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scheme = uri.scheme
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case {scheme, context}
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when {nil, _}
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raise ArgumentError.new("Missing scheme: #{uri}")
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when {"http", nil}
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false
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when {"http", OpenSSL::SSL::Context::Client}
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raise ArgumentError.new("TLS context given for HTTP URI")
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when {"https", nil}
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true
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when {"https", OpenSSL::SSL::Context::Client}
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context
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else
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raise ArgumentError.new "Unsupported scheme: #{scheme}"
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end
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2019-11-16 19:06:55 +00:00
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end
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2019-11-24 17:16:35 +00:00
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protected def self.validate_host(uri)
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host = uri.host
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return host if host && !host.empty?
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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raise ArgumentError.new %(Request URI must have host (URI is: #{uri}))
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end
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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private def self.exec(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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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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port = uri.port
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path = uri.full_path
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user = uri.user
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password = uri.password
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2019-11-16 19:06:55 +00:00
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2019-11-24 17:16:35 +00:00
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HTTP::Client.new(host, port, tls) do |client|
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if user && password
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client.basic_auth(user, password)
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end
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yield client, path
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2019-11-16 19:06:55 +00:00
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end
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end
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end
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end
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