---
warning: DO NOT CHANGE THIS MANUALLY, THIS IS GENERATED BY https://github.com/duckdb/community-extensions repository, check README there
title: curl_httpfs
excerpt: |
  DuckDB Community Extensions
  httpfs with connection pool, HTTP/2 and async IO.

extension:
  name: curl_httpfs
  description: httpfs with connection pool, HTTP/2 and async IO. 
  version: 0.5.0
  language: C++
  build: cmake
  license: MIT
  excluded_platforms: "wasm_mvp;wasm_eh;wasm_threads;windows_amd64_rtools;windows_amd64;windows_amd64_mingw"
  maintainers:
    - dentiny

repo:
  github: dentiny/duckdb-curl-filesystem
  andium: e5c4921e6e908d07abab3f89c0d036a22db0cd4b
  ref: e87b297515c4ae002b7574fee431ad6cf205ee63

docs:
  hello_world: |
    SELECT length(content) AS char_count FROM read_text('https://raw.githubusercontent.com/dentiny/duck-read-cache-fs/main/test/data/stock-exchanges.csv');
  extended_description: |
    This extension rewrites HTTP layer for httpfs based on libcurl and epoll, it provides a few features:
    - 100% compatible with httpfs; use curl-based implementation by default, but also allows users to fallback to httplib.
    - Enable HTTP/2 by default.
    - Implements TCP connection pool.
    - All network IO operations are performed in asynchronously.

extension_star_count: 16
extension_star_count_pretty: 16
extension_download_count: 4092
extension_download_count_pretty: 4.1k
image: '/images/community_extensions/social_preview/preview_community_extension_curl_httpfs.png'
layout: community_extension_doc
---
### Compatibility Matrix

This table covers all DuckDB releases that have not reached [end-of-life](https://duckdb.org/release_calendar), including LTS releases, and shows the 2 most recent patch releases of each. Older patch releases are not listed, but the extension may be available for them as well.

<div class="extension_compatibility_table"></div>

| Platform | 1.4.4 | 1.4.5 | 1.5.5 | 1.5.6 | 2.0.0 |
| :--- | :---: | :---: | :---: | :---: | :---: |
| Linux AMD64 | ✅ | ❌ | ✅ | ✅ | ✅ |
| Linux ARM64 | ✅ | ❌ | ✅ | ✅ | ✅ |
| macOS AMD64 | ✅ | ❌ | ✅ | ✅ | ✅ |
| macOS ARM64 | ✅ | ❌ | ✅ | ✅ | ✅ |
| Windows AMD64 | ❌ | ❌ | ❌ | ❌ | ❌ |
| Windows ARM64 | ❌ | ❌ | ❌ | ❌ | ❌ |
| WebAssembly | ❌ | ❌ | ❌ | ❌ | ❌ |

### Installing and Loading
```sql
INSTALL {{ page.extension.name }} FROM community;
LOAD {{ page.extension.name }};
```

{% if page.docs.hello_world %}
### Example
```sql
{{ page.docs.hello_world }}```
{% endif %}

{% if page.docs.extended_description %}
### About {{ page.extension.name }}
{{ page.docs.extended_description }}
{% endif %}
### Added Functions

<div class="extension_functions_table"></div>

|         function_name          | function_type |                                    description                                    | comment |                     examples                      |
|--------------------------------|---------------|-----------------------------------------------------------------------------------|---------|---------------------------------------------------|
| curl_httpfs_get_tcp_connection | table         | Returns active system TCP connection counts grouped by remote IP address.         | NULL    | [SELECT * FROM curl_httpfs_get_tcp_connection();] |
| curl_httpfs_http_util_name     | scalar        | Returns the name of the HTTP client implementation currently used by curl_httpfs. | NULL    | [SELECT curl_httpfs_http_util_name();]            |

### Overloaded Functions

<div class="extension_functions_table"></div>

This extension does not add any function overloads.

### Added Types

<div class="extension_types_table"></div>

This extension does not add any types.

### Added Settings

<div class="extension_settings_table"></div>

|                name                |                                                     description                                                      | input_type | scope  | aliases | typed_value |
|------------------------------------|----------------------------------------------------------------------------------------------------------------------|------------|--------|---------|-------------|
| curl_httpfs_client_implementation  | Select the HTTPUtil implementation to be used. Supports `multi_curl`, `curl`, `httplib`, and `default` (multi_curl). | VARCHAR    | GLOBAL | []      | default     |
| curl_httpfs_enable_verbose_logging | Turn on and off curl-based http util verbose logging.                                                                | BOOLEAN    | GLOBAL | []      | 0           |
| temp_directory                     | Set the directory to which temporary files are written.                                                              | VARCHAR    | GLOBAL | []      | post.db.tmp |