HTTPoison

v0.13.0

HTTPoison v0.13.0 HTTPoison

The HTTP client for Elixir.

The HTTPoison module can be used to issue HTTP requests and parse HTTP responses to arbitrary urls.

iex> HTTPoison.get!("https://api.github.com")
%HTTPoison.Response{status_code: 200,
                    headers: [{"content-type", "application/json"}],
                    body: "{...}"}

It’s very common to use HTTPoison in order to wrap APIs, which is when the HTTPoison.Base module shines. Visit the documentation for HTTPoison.Base for more information.

Under the hood, the HTTPoison module just uses HTTPoison.Base (as described in the documentation for HTTPoison.Base) without overriding any default function.

See request/5 for more details on how to issue HTTP requests

Summary

Types

body()
headers()

Functions

delete(url, headers \\ [], options \\ [])

Issues a DELETE request to the given url

delete!(url, headers \\ [], options \\ [])

Issues a DELETE request to the given url, raising an exception in case of failure

get(url, headers \\ [], options \\ [])

Issues a GET request to the given url

get!(url, headers \\ [], options \\ [])

Issues a GET request to the given url, raising an exception in case of failure

head(url, headers \\ [], options \\ [])

Issues a HEAD request to the given url

head!(url, headers \\ [], options \\ [])

Issues a HEAD request to the given url, raising an exception in case of failure

options(url, headers \\ [], options \\ [])

Issues an OPTIONS request to the given url

options!(url, headers \\ [], options \\ [])

Issues a OPTIONS request to the given url, raising an exception in case of failure

patch(url, body, headers \\ [], options \\ [])

Issues a PATCH request to the given url

patch!(url, body, headers \\ [], options \\ [])

Issues a PATCH request to the given url, raising an exception in case of failure

post(url, body, headers \\ [], options \\ [])

Issues a POST request to the given url

post!(url, body, headers \\ [], options \\ [])

Issues a POST request to the given url, raising an exception in case of failure

process_headers(headers)
process_request_body(body)
process_request_headers(headers)
process_request_options(options)
process_response_body(body)
process_response_chunk(chunk)
process_status_code(status_code)
process_url(url)
put(url, body \\ "", headers \\ [], options \\ [])

Issues a PUT request to the given url

put!(url, body \\ "", headers \\ [], options \\ [])

Issues a PUT request to the given url, raising an exception in case of failure

request(method, url, body \\ "", headers \\ [], options \\ [])

Issues an HTTP request with the given method to the given url

request!(method, url, body \\ "", headers \\ [], options \\ [])

Issues an HTTP request with the given method to the given url, raising an exception in case of failure

start()

Starts HTTPoison and its dependencies

stream_next(async_response)

Requests the next message to be streamed for a given HTTPoison.AsyncResponse

Types

Functions

delete(url, headers \\ [], options \\ []) 
delete(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a DELETE request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

delete!(url, headers \\ [], options \\ []) 
delete!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a DELETE request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

get(url, headers \\ [], options \\ []) 
get(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a GET request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

get!(url, headers \\ [], options \\ []) 
get!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a GET request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

head(url, headers \\ [], options \\ []) 
head(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a HEAD request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

head!(url, headers \\ [], options \\ []) 
head!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a HEAD request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

options(url, headers \\ [], options \\ []) 
options(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues an OPTIONS request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

options!(url, headers \\ [], options \\ []) 
options!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a OPTIONS request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

patch(url, body, headers \\ [], options \\ []) 
patch(binary, any, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a PATCH request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

patch!(url, body, headers \\ [], options \\ []) 
patch!(binary, any, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a PATCH request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

post(url, body, headers \\ [], options \\ []) 
post(binary, any, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a POST request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

post!(url, body, headers \\ [], options \\ []) 
post!(binary, any, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a POST request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

process_headers(headers)
process_request_body(body) 
process_request_body(any) :: body
process_request_headers(headers) 
process_request_headers(headers) :: headers
process_request_options(options)
process_response_body(body) 
process_response_body(binary) :: any
process_response_chunk(chunk)
process_status_code(status_code)
process_url(url)
put(url, body \\ "", headers \\ [], options \\ []) 
put(binary, any, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a PUT request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

put!(url, body \\ "", headers \\ [], options \\ [])

Issues a PUT request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

request(method, url, body \\ "", headers \\ [], options \\ []) 
request(atom, binary, any, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues an HTTP request with the given method to the given url.

This function is usually used indirectly by get/3, post/4, put/4, etc

Args:

  • method - HTTP method as an atom (:get, :head, :post, :put, :delete, etc.)
  • url - target url as a binary string or char list
  • body - request body. See more below
  • headers - HTTP headers as an orddict (e.g., [{"Accept", "application/json"}])
  • options - Keyword list of options

Body:

  • binary, char list or an iolist
  • {:form, [{K, V}, ...]} - send a form url encoded
  • {:file, "/path/to/file"} - send a file
  • {:stream, enumerable} - lazily send a stream of binaries/charlists

Options:

  • :timeout - timeout to establish a connection, in milliseconds. Default is 8000
  • :recv_timeout - timeout used when receiving a connection. Default is 5000
  • :stream_to - a PID to stream the response to
  • :async - if given :once, will only stream one message at a time, requires call to stream_next
  • :proxy - a proxy to be used for the request; it can be a regular url or a {Host, Port} tuple
  • :proxy_auth - proxy authentication {User, Password} tuple
  • :ssl - SSL options supported by the ssl erlang module
  • :follow_redirect - a boolean that causes redirects to be followed
  • :max_redirect - an integer denoting the maximum number of redirects to follow
  • :params - an enumerable consisting of two-item tuples that will be appended to the url as query string parameters

Timeouts can be an integer or :infinity

This function returns {:ok, response} or {:ok, async_response} if the request is successful, {:error, reason} otherwise.

Examples 

request(:post, "https://my.website.com", "{\"foo\": 3}", [{"Accept", "application/json"}])
request!(method, url, body \\ "", headers \\ [], options \\ []) 
request!(atom, binary, any, headers, Keyword.t) :: HTTPoison.Response.t

Issues an HTTP request with the given method to the given url, raising an exception in case of failure.

request!/5 works exactly like request/5 but it returns just the response in case of a successful request, raising an exception in case the request fails.

start()

Starts HTTPoison and its dependencies.

stream_next(async_response) 
stream_next(HTTPoison.AsyncResponse.t) ::
  {:ok, HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Requests the next message to be streamed for a given HTTPoison.AsyncResponse.

See request!/5 for more detailed information.