import base64
intrude import standard::stream
+intrude import standard::bytes
# Websocket compatible listener
#
super TCPStream
init do
- _buffer = new FlatBuffer
+ _buffer = new NativeString(1024)
_buffer_pos = 0
+ _buffer_capacity = 1024
+ _buffer_length = 0
var headers = parse_handshake
var resp = handshake_response(headers)
end
# Frames a text message to be sent to a client
- private fun frame_message(msg: String): String
+ private fun frame_message(msg: String): Bytes
do
- var ans_buffer = new FlatBuffer
+ var ans_buffer = new Bytes.with_capacity(msg.length)
# Flag for final frame set to 1
# opcode set to 1 (for text)
- ans_buffer.add(129.ascii)
+ ans_buffer.add(129)
if msg.length < 126 then
- ans_buffer.add(msg.length.ascii)
+ ans_buffer.add(msg.length)
end
if msg.length >= 126 and msg.length <= 65535 then
- ans_buffer.add(126.ascii)
- ans_buffer.add(msg.length.rshift(8).ascii)
- ans_buffer.add(msg.length.ascii)
+ ans_buffer.add(126)
+ ans_buffer.add(msg.length.rshift(8))
+ ans_buffer.add(msg.length)
end
- ans_buffer.append(msg)
- return ans_buffer.to_s
+ if msg isa FlatString then
+ ans_buffer.append_ns_from(msg.items, msg.length, msg.index_from)
+ else
+ for i in msg.substrings do
+ ans_buffer.append_ns_from(i.as(FlatString).items, i.length, i.as(FlatString).index_from)
+ end
+ end
+ return ans_buffer
end
# Reads an HTTP frame
# Gets the message from the client, unpads it and reconstitutes the message
private fun unpad_message do
var fin = false
+ var bf = new Bytes.empty
while not fin do
var fst_byte = client.read_byte
var snd_byte = client.read_byte
if fin_flag != 0 then fin = true
var opcode = fst_byte.bin_and(15)
if opcode == 9 then
- _buffer.add(138.ascii)
- _buffer.add('\0')
- client.write(_buffer.to_s)
- _buffer_pos += 2
+ bf.add(138)
+ bf.add(0)
+ client.write(bf.to_s)
+ _buffer_pos = _buffer_length
return
end
if opcode == 8 then
var len = snd_byte.bin_and(127)
var payload_ext_len = 0
if len == 126 then
- var tmp = client.read(2)
+ var tmp = client.read_bytes(2)
if tmp.length != 2 then
last_error = new IOError("Error: received interrupted frame")
client.close
return
end
- payload_ext_len = tmp[1].ascii + tmp[0].ascii.lshift(8)
+ payload_ext_len = tmp[1] + tmp[0].lshift(8)
else if len == 127 then
# 64 bits for length are not supported,
# only the last 32 will be interpreted as a Nit Integer
- var tmp = client.read(8)
+ var tmp = client.read_bytes(8)
if tmp.length != 8 then
last_error = new IOError("Error: received interrupted frame")
client.close
return
end
for pos in [0 .. tmp.length[ do
- var i = tmp[pos].ascii
+ var i = tmp[pos]
payload_ext_len += i.lshift(8 * (7 - pos))
end
end
if mask_flag != 0 then
+ var mask = client.read_bytes(4).items
if payload_ext_len != 0 then
- var msg = client.read(payload_ext_len+4)
- var mask = msg.substring(0,4)
- _buffer.append(unmask_message(mask, msg.substring(4, payload_ext_len)))
- else
- if len == 0 then
- return
- end
- var msg = client.read(len+4)
- var mask = msg.substring(0,4)
- _buffer.append(unmask_message(mask, msg.substring(4, len)))
+ len = payload_ext_len
end
+ var msg = client.read_bytes(len).items
+ bf.append_ns(unmask_message(mask, msg, len), len)
end
end
+ _buffer = bf.items
+ _buffer_length = bf.length
end
# Unmasks a message sent by a client
- private fun unmask_message(key: String, message: String): String
+ private fun unmask_message(key: NativeString, message: NativeString, len: Int): NativeString
do
- var return_message = new FlatBuffer.with_capacity(message.length)
- var msg_iter = message.chars.iterator
+ var return_message = new NativeString(len)
- while msg_iter.is_ok do
- return_message.chars[msg_iter.index] = msg_iter.item.ascii.bin_xor(key.chars[msg_iter.index%4].ascii).ascii
- msg_iter.next
+ for i in [0 .. len[ do
+ return_message[i] = message[i].ascii.bin_xor(key[i%4].ascii).ascii
end
- return return_message.to_s
+ return return_message
end
# Checks if a connection to a client is available
redef fun connected do return client.connected
- redef fun write(msg)
- do
- client.write(frame_message(msg.to_s))
- end
+ redef fun write_bytes(s) do client.write_bytes(frame_message(s.to_s))
+
+ redef fun write(msg) do client.write(frame_message(msg.to_s).to_s)
redef fun is_writable do return client.connected
redef fun fill_buffer
do
- _buffer.clear
- _buffer_pos = 0
+ buffer_reset
unpad_message
end
- redef fun end_reached do return client._buffer_pos >= client._buffer.length and client.end_reached
+ redef fun end_reached do return client._buffer_pos >= client._buffer_length and client.end_reached
# Is there some data available to be read ?
fun can_read(timeout: Int): Bool do return client.ready_to_read(timeout)
nitlanguage / nit.git / blobdiff