Python 我应该如何配置我的头以向APNs发送HTTP/2 POST以避免；收到重复的伪报头字段“；错误？

我对HTTP非常陌生，主要是iOS，所以请耐心听我说。 我正在使用httpxpython库尝试向iPhone发送通知，因为我必须发送HTTP/2 POST才能这样做。苹果的文档说它需要“：method”和“：path”标题，但当我试图在文章中包含这些标题时

headers = { 
    ':method' : 'POST', 
    ':path' : '/3/device/{}'.format(deviceToken),  
    ...
    }

我得到了错误

h2.exceptions.ProtocolError:收到重复的伪标头字段b'：路径

很明显，包含“：path”标题有问题，但我也需要发送它，所以我不确定我做错了什么。苹果公司的文件也说

将：path和authorization值编码为文本头字段，无需索引

使用增量索引将所有其他字段编码为文字标题字段

我真的不知道这意味着什么，也不知道如何实现，也不知道这是否相关。我认为httpx会将我的“：path”头与默认头合并以消除重复项，但我只是在这里胡说

完全回溯

File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 992, in post
    return self.request(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 733, in request
    return self.send(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 767, in send
    response = self._send_handling_auth(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 805, in _send_handling_auth
    response = self._send_handling_redirects(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 837, in _send_handling_redirects
    response = self._send_single_request(request, timeout)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpx/_client.py", line 861, in _send_single_request
    (status_code, headers, stream, ext) = transport.request(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/connection_pool.py", line 218, in request
    response = connection.request(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/connection.py", line 106, in request
    return self.connection.request(method, url, headers, stream, ext)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/http2.py", line 119, in request
    return h2_stream.request(method, url, headers, stream, ext)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/http2.py", line 292, in request
    self.send_headers(method, url, headers, has_body, timeout)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/http2.py", line 330, in send_headers
    self.connection.send_headers(self.stream_id, headers, end_stream, timeout)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/httpcore/_sync/http2.py", line 227, in send_headers
    self.h2_state.send_headers(stream_id, headers, end_stream=end_stream)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/connection.py", line 770, in send_headers
    frames = stream.send_headers(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/stream.py", line 865, in send_headers
    frames = self._build_headers_frames(
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/stream.py", line 1252, in _build_headers_frames
    encoded_headers = encoder.encode(headers)
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/hpack/hpack.py", line 249, in encode
    for header in headers:
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/utilities.py", line 496, in inner
    for header in headers:
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/utilities.py", line 441, in _validate_host_authority_header
    for header in headers:
  File "/Users/User/.pyenv/versions/3.9.0/lib/python3.9/site-packages/h2/utilities.py", line 338, in _reject_pseudo_header_fields
    raise ProtocolError(
h2.exceptions.ProtocolError: Received duplicate pseudo-header field b':method'

请求：

devServer = "https://api.sandbox.push.apple.com:443"
title = "some title"
notification = { "aps": { "alert": title, "sound": "someSound.caf" } }
client = httpx.Client(http2=True)
try:
    r = client.post(devServer, json=notification, headers=headers)
finally:
    client.close()

---

只需将

'/3/device/{}.format（deviceToken）

作为路径附加到devServer url，并且“：path”伪头将自动设置为它

就是

devServer = 'https://api.sandbox.push.apple.com:443/3/device/{}'.format(deviceToken) 

说明：

通常不需要在http2中手动添加“：path”、“：method”和“：scheme”伪头

---

参考资料：

您的http请求调用是什么样子？@C.Nivs将其添加到我的问题中。从您的标题中取出“：path”&“：method”-通过http2，httpx会自动将其放入。（我使用了差不多相同的代码，减去那些头！）@Sebastian那么我如何在没有“：path”头的情况下传递设备令牌呢？我想我可以不使用“：method”，因为POST是可以推断出来的，但我只是不确定如何传递设备令牌信息，否则…@Jake将路径放入传递给POST函数的URL中。现在，您只需将其放入

devServer

，改为如下：

'{}/3/device/{}.format（devServer，deviceToken）