salrashid123

salrashid123 / gist:9d4c516fad4bf31dcaa7ece6a8aaaaf6

Created August 26, 2017 20:09

	git clone https://github.com/salrashid123/grpc_curl
	cd grpc_curl/src/
	virtualenv env --no-site-packages
	source env/bin/activate
	pip install grpcio-tools hexdump
	python -m grpc_tools.protoc -I . --python_out=. --grpc_python_out=. echo.proto

salrashid123 / gist:b39e2ad383169290c9f64edfcb70f8d5

Last active August 26, 2017 20:11

	def w(filename):
	req = echo_pb2.EchoRequest(firstname='john', lastname='doe')
	msg = binascii.b2a_hex(req.SerializeToString())
	frame = '00' + hex(len(msg)/2).lstrip("0x").zfill(8) + msg
	print 'Raw Encode: ' + frame
	f = open(filename, "wb+")
	f.write(binascii.a2b_hex(frame))
	f.close()

salrashid123 / xxd1.sh

Created August 26, 2017 20:11

	$ xxd frame.bin
	00000000: 0a04 6a6f 686e 1203 646f 65 ..john..doe
	$ xxd -p frame.bin
	0a046a6f686e1203646f65
	$ echo `xxd -p frame.bin` \| xxd -r -p \| protoc --decode_raw
	1: "john"
	2: "doe"

salrashid123 / xxd_frame.py

Created August 26, 2017 20:16

	>>> msg = '0a046a6f686e1203646f65'
	>>> print '00' + hex(len(msg)/2).lstrip("0x").zfill(8) + msg
	000000000b0a046a6f686e1203646f65
	echo -n '000000000b0a046a6f686e1203646f65' \| xxd -r -p - frame.bin

salrashid123 / xxd_def

Created August 26, 2017 20:17

	Delimited-Message → Compressed-Flag Message-Length Message
	Compressed-Flag → 0 / 1 # encoded as 1 byte unsigned integer
	Message-Length → {length of Message} # encoded as 4 byte unsigned integer
	Message → *{binary octet}

	compression:
	00
	message-length =>11(decimal) octets =>b(hex)
	0000000b
	msg:

salrashid123 / curl_req.bas

Created August 26, 2017 20:19

	curl -v -k --raw -X POST --http2 \
	-H "Content-Type: application/grpc" \
	-H "TE: trailers" \
	--data-binary @frame.bin \
	https://main.esodemoapp2.com:50051/echo.EchoServer/SayHello \
	-o resp.bin


	nghttp -v -H ":method: POST" \
	-H "Content-Type: application/grpc" \

salrashid123 / openssl_out.bas

Created August 26, 2017 20:19

	$ nslookup main.esodemoapp2.com 8.8.8.8
	Server: 8.8.8.8
	Address: 8.8.8.8#53
	Non-authoritative answer:
	Name: main.esodemoapp2.com
	Address: 127.0.0.1

	$ openssl x509 -in server_crt.pem -text -noout
	...
	Subject: C=US, ST=California, O=Google, OU=Enterprise, CN=main.esodemoapp2.com

salrashid123 / resp_echo.bas

Created August 26, 2017 20:20

	$ echo 0a1048656c6c6f2c206a6f686e20646f6521 \| xxd -r -p \| protoc --decode_raw
	1: "Hello, john doe!"

salrashid123 / python_resp.py

Created August 26, 2017 20:21

	$ python message_util.py read resp.bin
	Got wire_message: 00000000120a1048656c6c6f2c206a6f686e20646f6521
	Proto Decode: Hello, john doe!


	def r(filename):
	f = open(filename, "rb")
	wire_msg = binascii.b2a_hex(f.read())
	f.close()
	print 'Got wire_message: ' + wire_msg

salrashid123 / stream_resp.bas

Created August 26, 2017 20:23