I'm using BaseHTTPServer.BaseHTTPRequestHandler
in order to implement my server.
currently I repsonse to get request with merely binary data file.
self.send_response(200)
self.send_header("Content-Type", 'application/octet-stream')
self.send_header("Content-Disposition", 'attachment; filename="{}"'.format(os.path.basename(FILEPATH)))
fs = os.fstat(f.fileno())
self.send_header("Content-Length", str(fs.st_size))
self.end_headers()
Now it's requested to add another section which include some short json formatted configuration data (i.e. {'status': 'ok', 'type': 'keepalive'}
) and i'd rather pass this information on the same response separated by unique http header or by the http body.
What is the best way to do so ? I'd like to know how to extend my code to support this.
Thanks
There's lots of ways to do this, I think the best choice is going to depend on what your receiving side is capable of understanding most easily.
The most literal interpretation would be to use content-type multipart/mixed
https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html but you're probably going to have to write your own parsing on the receiving end. I don't know if this is exactly to spec, but it gets the idea across:
from http.server import BaseHTTPRequestHandler
import http.server
import socketserver
import string
import random
import io
PORT = 8000
class ResponsePart:
def __init__(self, content, content_type):
self.content = content.encode('utf-8')
self.content_type = content_type.encode('utf-8')
class Mine(http.server.BaseHTTPRequestHandler):
def get_separator(self, parts):
while True:
boundary = []
for i in range(32):
boundary.append(random.choice(string.digits + string.ascii_letters))
boundary = ''.join(boundary).encode('ascii')
for part in parts:
if boundary in part:
break
else:
return boundary
def do_GET(self):
responses = [
ResponsePart('abc123', 'Content-type: application/octet-stream'),
ResponsePart('{"a":"b"}', 'Content-type: application/json'),
]
boundary = self.get_separator([r.content for r in responses])
self.send_response(200)
self.send_header("Content-Type", 'multipart/mixed; boundary=' + boundary.decode('ascii'))
self.end_headers()
for piece in responses:
self.wfile.write(b'--')
self.wfile.write(boundary)
self.wfile.write(b'\r\n')
self.wfile.write(piece.content_type)
self.wfile.write(b'\r\n')
self.wfile.write(piece.content)
self.wfile.write(b'\r\n')
Handler = Mine
with socketserver.TCPServer(("", PORT), Handler) as httpd:
httpd.serve_forever()
With that out of the way, I'd do this probably using JSON or something so that you're returning a single consistent content-type:
from http.server import BaseHTTPRequestHandler
import http.server
import socketserver
import string
import random
import io
import json
PORT = 8000
class Mine(http.server.BaseHTTPRequestHandler):
def do_GET(self):
response = {
'filedata': 'abc123',
'status': {"a":"b"},
}
output_data = json.dumps(response).encode('utf-8')
self.send_response(200)
self.send_header("Content-Type", 'application/octet-stream')
self.send_header("Content-Length", str(len(output_data)))
self.end_headers()
self.wfile.write(output_data)
Handler = Mine
with socketserver.TCPServer(("", PORT), Handler) as httpd:
httpd.serve_forever()
This is going to be far easier to handle on the receiving end, one json decode and you're done.