API Reference

This page documents all public APIs in httpmorph.

Module Functions

httpmorph.get()

response = httpmorph.get(url, **kwargs)

Make a GET request.

Parameters:

Returns: Response object

httpmorph.post()

response = httpmorph.post(url, data=None, json=None, **kwargs)

Make a POST request.

Parameters:

  • url (str) - URL to request

  • data (bytes/str/dict) - Request body or form data

  • json (dict) - JSON data to send

  • **kwargs - See Request Parameters

Returns: Response object

httpmorph.put()

response = httpmorph.put(url, data=None, **kwargs)

Make a PUT request.

httpmorph.delete()

response = httpmorph.delete(url, **kwargs)

Make a DELETE request.

httpmorph.head()

response = httpmorph.head(url, **kwargs)

Make a HEAD request.

httpmorph.patch()

response = httpmorph.patch(url, data=None, **kwargs)

Make a PATCH request.

httpmorph.options()

response = httpmorph.options(url, **kwargs)

Make an OPTIONS request.

Client Class

client = httpmorph.Client(http2=True)

HTTP client for making requests. Defaults to HTTP/2 to match Chrome behavior.

Constructor Parameters:

  • http2 (bool) - Enable HTTP/2. Default: True

Methods:

All HTTP method functions (get, post, put, delete, head, patch, options) are available:

response = client.get(url, **kwargs)
response = client.post(url, data=None, json=None, **kwargs)
# etc.

Other Methods:

client.load_ca_file(ca_file)

Load CA certificates from file (PEM format).

Parameters:

  • ca_file (str) - Path to CA certificate bundle

Returns: bool - True on success

Session Class

session = httpmorph.Session(browser='chrome', os='macos', http2=True)

HTTP session with persistent cookies and headers. Sessions default to HTTP/2 to match Chrome browser behavior.

Constructor Parameters:

  • browser (str) - Browser profile to mimic. Options: 'chrome', 'chrome127'-'chrome143', 'random'. Default: 'chrome' (Chrome 143)

  • os (str) - Operating system for User-Agent. Options: 'macos', 'windows', 'linux'. Default: 'macos'

  • http2 (bool) - Enable HTTP/2. Default: True (matches Chrome behavior)

Attributes:

  • cookies (dict) - Session cookies

  • cookie_jar - Cookie jar object with length

  • headers (dict) - Persistent headers (can be set)

Methods:

All HTTP method functions are available:

response = session.get(url, **kwargs)
response = session.post(url, data=None, json=None, **kwargs)
# etc.

Context Manager:

with httpmorph.Session() as session:
    response = session.get(url)

Other Methods:

session.close()

Explicitly close the session and release resources.

AsyncClient Class

client = httpmorph.AsyncClient()

Async HTTP client using epoll/kqueue.

Methods:

All HTTP methods return coroutines:

response = await client.get(url, **kwargs)
response = await client.post(url, data=None, json=None, **kwargs)
# etc.

Context Manager:

async with httpmorph.AsyncClient() as client:
    response = await client.get(url)

Note: AsyncClient uses non-blocking I/O but DNS resolution is still blocking.

Response Class

Returned by all request methods.

Status Attributes

  • status_code (int) - HTTP status code (e.g., 200, 404)

  • ok (bool) - True if status is 200-399

  • reason (str) - Status reason phrase (e.g., “OK”, “Not Found”)

  • url (str) - Final URL after redirects

Content Attributes

  • body (bytes) - Raw response body

  • content (bytes) - Alias for body

  • text (str) - Decoded response body (lazy, UTF-8 with fallback)

  • headers (dict) - Response headers

Methods

response.json()

Parse response body as JSON.

Returns: Parsed JSON object (dict/list)

Raises: ValueError if body is not valid JSON

response.raise_for_status()

Raise HTTPError if status is 4xx or 5xx.

Raises: HTTPError

response.iter_content(chunk_size=1024, decode_unicode=False)

Iterate over response body in chunks.

Parameters:

  • chunk_size (int) - Size of chunks in bytes

  • decode_unicode (bool) - Decode chunks as text

Yields: bytes or str

response.iter_lines(delimiter=None, decode_unicode=True)

Iterate over response body line by line.

Parameters:

  • delimiter (str) - Line delimiter (default: \\n)

  • decode_unicode (bool) - Decode lines as text

Yields: str or bytes

Timing Attributes

All timing values are in microseconds:

  • total_time_us (int) - Total request time

  • connect_time_us (int) - Connection establishment time

  • tls_time_us (int) - TLS handshake time

  • first_byte_time_us (int) - Time to first byte

  • elapsed (timedelta) - Total time as timedelta object

TLS Attributes

For HTTPS requests:

  • tls_version (str) - TLS version used (e.g., “TLSv1.3”)

  • tls_cipher (str) - Cipher suite name

  • ja3_fingerprint (str) - JA3 TLS fingerprint

HTTP Version

  • http_version (str) - HTTP protocol version: “1.0”, “1.1”, or “2.0”

Redirect Handling

  • history (list) - List of Response objects from redirects

  • is_redirect (bool) - True if status is 3xx

Streaming

  • raw (BytesIO) - Raw response stream (lazy)

Error Attributes

  • error (int) - Error code (0 if no error)

  • error_message (str) - Human-readable error message

Request Parameters

Common parameters accepted by all request methods:

HTTP Parameters

  • headers (dict) - HTTP headers

  • params (dict) - URL query parameters

  • cookies (dict) - Cookies to send

  • auth (tuple) - Basic authentication: (username, password)

Body Parameters

  • data (bytes/str/dict) - Request body or form data

  • json (dict) - JSON data (auto-serialized with Content-Type header)

  • files (dict) - Files to upload (multipart/form-data)

Connection Parameters

  • timeout (int/float) - Request timeout in seconds

  • proxy (str) - Proxy URL

  • proxy_auth (tuple) - Proxy authentication: (username, password)

  • proxies (dict) - Proxy dict: {'http': '...', 'https': '...'}

SSL/TLS Parameters

  • verify or verify_ssl (bool) - Verify SSL certificates. Default: True

  • tls_version (str/tuple) - TLS version constraint (e.g., "1.2" or (min, max))

HTTP/2 Parameters

  • http2 (bool) - Enable HTTP/2 for this request (overrides client/session default)

Redirect Parameters

  • allow_redirects (bool) - Follow redirects. Default: True

  • max_redirects (int) - Maximum number of redirects. Default: 10

Other Parameters

  • stream (bool) - Stream response (use with iter_content())

Exceptions

All exceptions inherit from RequestException.

RequestException

Base exception for all httpmorph errors.

HTTPError

Raised when raise_for_status() is called on a 4xx/5xx response.

Attributes:

  • response - The Response object

ConnectionError

Raised when connection fails.

Timeout

Raised when request times out.

TooManyRedirects

Raised when max redirects is exceeded.

Version Information

import httpmorph

# Python package version
print(httpmorph.__version__)

# C library version
print(httpmorph.version())

Library Initialization

httpmorph.init()

Initialize the library (called automatically on import).

httpmorph.cleanup()

Cleanup library resources.

Browser Profiles

Available browser profiles for Session(browser=...):

Chrome 143 (Default)

The default and most accurate browser profile, mimicking Chrome 143:

Fingerprint Characteristics:

  • JA4: t13d1516h2_8daaf6152771_e5627efa2ab1 (perfect match)

  • JA3N: dcefaf3f0e71d260d19dc1d0749c9278 (perfect match)

  • Peetprint: 1d4ffe9b0e34acac0bd883fa7f79d7b5 (perfect match)

  • Akamai HTTP/2: 1:65536;2:0;4:6291456;6:262144|15663105|0|m,a,s,p (perfect match)

  • TLS 1.3 with 15 cipher suites

  • Post-quantum cryptography: X25519MLKEM768 (curve 4588)

  • Certificate compression: Brotli (zlib fallback for compatibility)

  • GREASE: Randomized per request

  • HTTP/2: Chrome-specific SETTINGS frame, priority (weight=256, exclusive=1)

  • Default headers: sec-ch-ua, sec-fetch-*, accept-language, priority

User-Agent Variants:

  • macOS: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

  • Windows: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

  • Linux: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Usage:

# Use Chrome 143 profile (default)
session = httpmorph.Session(browser='chrome')

# Explicitly use Chrome 143
session = httpmorph.Session(browser='chrome143')

# With specific OS
session = httpmorph.Session(browser='chrome', os='windows')

Chrome 127-142

Older Chrome profiles are also available for compatibility testing:

session = httpmorph.Session(browser='chrome127')
session = httpmorph.Session(browser='chrome135')
# etc.

Random

Randomly selects a browser profile for each session from available Chrome profiles.