Investigating HTTPX Library Error with Proxies: A Code Snippet Analysis (_ssl.c:992)

[Johnserf-Seed]

I wrote a very simple test code snippet

code snippet

code snippet

url = "https://www.tiktok.com/ttwid/check/"
payload = '{"aid":1988,"service":"www.tiktok.com","union":false,"unionHost":"","needFid":false,"fid":"","migrate_priority":0}'
headers = {
    "Content-Type": "application/json",
    "Cookie": "ttwid=1%7C76h2rDsKzpmjqlO_ca2y9o_tmyKaoGNEwQqPevPtp_E%7C1715513873%7C932348e1f94fcca9ddca030483396dffde91d4f60d430f746c958b74dbb62add;",
}
requests_proxies = {
    "http": "http://127.0.0.1:3580",
    "https": "http://127.0.0.1:3580",
}
httpx_proxies = {
    "http://": "http://127.0.0.1:3580",
    "https://": "http://127.0.0.1:3580",
}

print("==============requests==============")
response = requests.request(
    "POST",
    url,
    data=payload,
    headers=headers,
    proxies=requests_proxies,
    allow_redirects=True,
)
print(response.text, response.headers)

print("=============httpx post=============")
response = httpx.post(
    url,
    data=payload,
    headers=headers,
    proxies=httpx_proxies,
    follow_redirects=True,
)
print(response.text, response.headers)

print("============httpx client============")
client = httpx.Client(
    headers=headers,
    proxies=httpx_proxies,
)
response = client.post(url, data=payload)
print(response.text, response.headers)

exception

ConnectError:
EOF occurred in violation of protocol (_ssl.c:992)
ssl.SSLEOFError: EOF occurred in violation of protocol (_ssl.c:992)

During handling of the above exception, another exception occurred:

httpcore.ConnectError: EOF occurred in violation of protocol (_ssl.c:992)

The above exception was the direct cause of the following exception:

    response = httpx.post(
               ^^^^^^^^^^^
httpx.ConnectError: EOF occurred in violation of protocol (_ssl.c:992)

In most cases, this can be requested successfully, but occasionally the following error occurs.

dependency

Python:

Python 3.11.1
pip 24.0

httpx:

anyio                     3.6.2
certifi                   2024.2.2
httpcore                  1.0.5
idna                      3.4
sniffio                   1.3.0

requests:

certifi                   2024.2.2
charset-normalizer        3.2.0
idna                      3.4
urllib3                   2.2.1

question

I want to know if this is related to the proxy server. Even if I set verify=False, this error continues to occur. I can't find a solution related to (_ssl.c:992), and I want to know if anyone who is more familiar with it or has encountered the same situation can help me figure out my confusion.

This one is another similar discussion: #2566

[tomchristie]

I want to know if this is related to the proxy server.

Okay, so are you seeing the same error without the proxy server?

[Johnserf-Seed]

I've never gotten this error when requesting sites that don't need to carry proxy parameters, so I suspect it has something to do with the proxy server, but I can't fix this (_ssl.c:992) error by putting verify=False, and that's what's confusing me.