Removing old echo example

examples/echo/README.md

@@ -1,9 +0,0 @@
-### Important notes
-
-This example should be able to work with noise-c echo example.
-Echo constants required for proper encoding of Noise Protocol name were ported directly from noise-c.
-
-More info on noise-c echo: https://rweather.github.io/noise-c/example_echo.html 
-
-### Usage
-TBD

examples/echo/client_script.py

@@ -1,52 +0,0 @@
-import logging
-import socket
-import struct
-
-from examples.echo.echo_constants import PSK, PATTERN, CIPHER, DH, HASH
-
-logger = logging.getLogger(__name__)
-
-
-with open('../noise-keys/psk') as fd:
-    psk = fd.readline()
-    # psk = base64.b64decode(fd.readline())
-
-protocol_id = struct.Struct('BBBBB')
-
-noise_name = 'NoisePSK_NN_448_ChaChaPoly_BLAKE2b'
-s = socket.socket()
-s.connect(('localhost', 2000))
-
-
-def get_packed_protocol_id(name):
-    if not name.startswith('Noise'):
-        logger.info('Wrong pattern: does not begin with "Noise"')
-    name = name[5:]
-
-    if name.startswith('PSK'):
-        psk_byte = PSK.PSK_ENABLED.value
-        name = name[3:]
-    else:
-        psk_byte = PSK.PSK_DISABLED.value
-    name = name.lstrip('_')
-
-    pattern = name[:2]
-    pattern_byte = getattr(PATTERN, 'PATTERN_' + pattern).value
-
-    name = name[2:].lstrip('_')
-
-    dh = name.split('_')[0]
-    dh_byte = getattr(DH, 'DH_' + dh).value
-    name = name.lstrip(dh).lstrip('_')
-
-    cipher = name.split('_')[0]
-    cipher_byte = getattr(CIPHER, 'CIPHER_' + cipher.upper()).value
-    name = name.lstrip(cipher).lstrip('_')
-
-    hashing = name.split('_')[0]
-    hashing_byte = getattr(HASH, 'HASH_' + hashing).value
-    return protocol_id.pack(psk_byte, pattern_byte, cipher_byte, dh_byte, hashing_byte)
-
-s.send(get_packed_protocol_id(noise_name))
-# s.send.
-# import ipdb; ipdb.set_trace()

examples/echo/echo_constants.py

@@ -1,49 +0,0 @@
-from enum import Enum
-
-
-class PSK(Enum):
-    PSK_DISABLED = 0x00
-    PSK_ENABLED = 0x01
-
-
-class PATTERN(Enum):
-    PATTERN_NN = 0x00
-    PATTERN_KN = 0x01
-    PATTERN_NK = 0x02
-    PATTERN_KK = 0x03
-    PATTERN_NX = 0x04
-    PATTERN_KX = 0x05
-    PATTERN_XN = 0x06
-    PATTERN_IN = 0x07
-    PATTERN_XK = 0x08
-    PATTERN_IK = 0x09
-    PATTERN_XX = 0x0A
-    PATTERN_IX = 0x0B
-    PATTERN_HFS = 0x80
-
-
-class CIPHER(Enum):
-    CIPHER_CHACHAPOLY = 0x00
-    CIPHER_AESGCM = 0x01
-
-
-class DH(Enum):
-    DH_25519 = 0x00
-    DH_448 = 0x01
-    DH_NEWHOPE = 0x02
-    DH_MASK = 0x0F
-
-
-class HYBRID(Enum):
-    HYBRID_NONE = 0x00
-    HYBRID_25519 = 0x10
-    HYBRID_448 = 0x20
-    HYBRID_NEWHOPE = 0x30
-    HYBRID_MASK = 0xF0
-
-
-class HASH(Enum):
-    HASH_SHA256 = 0x00
-    HASH_SHA512 = 0x01
-    HASH_BLAKE2s = 0x02
-    HASH_BLAKE2b = 0x03