How to send raw data through python requests connection

Question

I am interfacing with a server that requires some http communication at the beginning (handshake with GET's/POST's), but later switches to raw data packets over tcp. Raw packets are sent and received using the connection established with last 'GET' packet with 'connection: keep-alive' header. I have managed to read incoming data using response.raw._fp.read() and stream=True, but i can't find a way to send data back to server.

By raw packets I mean bytestream, without any method/url or headers.

resp = session.get(
    'http://server.server/test',
    stream=True
)

while True:
    try:
        header = resp.raw._fp._safe_read(8)
        if header[3]>0:
            data = resp.raw._fp._safe_read(header[3])
    except http.client.IncompleteRead:
        break

Possible duplicate of [sending raw data in python requests](https://stackoverflow.com/questions/39614675/sending-raw-data-in-python-requests) — , Aug 06 '18 at 14:07

score 0 · Accepted Answer · answered Aug 06 '18 at 14:08

Want you want to do is get the underlying socket from the connection that requests create, and fortunately you can do it for streaming connections.

import requests
import socket
r = requests.get('http://server.server/test', stream=True)
s = socket.fromfd(r.raw.fileno(), socket.AF_INET, socket.SOCK_STREAM)

After that you can send data as with any other socket. Side note for non-streaming connections the file descriptor is cleaned up before the response object is returned so you could also implement this inside the "response" callback.

How to send raw data through python requests connection

1 Answers1