Add support for seeking in uploads (#741).
Suppress another use of httpbin.
More aggressively skip httpbin using tests.
Remove vignette contents and point to httr2.
"rlang_interactive" global option, in case it's necessary to
declare the session to be interactive (enough) for OOB (@jennybc, #734).Fix failing test.
parse_url() now refers to RFC3986 for the parsing of the URL's
scheme, with a bit more permissive syntax (@ymarcon, #615).
Remove the default cainfo option on Windows. Providing a CA bundle is not
needed anymore because curl now uses the native schannel SSL backend.
For recent versions of libcurl, overriding the CA bundle actually breaks
custom trust certificates on corporate networks. (@jeroen, #603)
http_status() now throws the correct error message if http status code is
not in the list of known codes (@Javdat, #567).
POST() gains an example on how to use encode = "raw" for specific json
string body (@cderv, #563)
RETRY() now throws the correct error message if an error occurs during the
request (@austin3dickey, #581).
VERB() and RETRY() now automatically uppercase methods (@patr1ckm, #571).
OAuth2.0 has been made somewhat more flexible in order to support more websites:
init_oauth2.0() passes use_basic_auth onwards, enabling
basic authentication for OAuth 2.0 (@peterhartman, #484).
oauth2.0_token() (and init_oauth2.0()) gains a oob_value argument
that allows arbitrary values to be sent for the request_uri
parameter during OOB flows (@ctrombley, #493).
oauth2.0_token() (and init_oauth2.0()) gain a new
query_authorize_extra parameter make it possible to add extra query
parameters to the authorization URL. This is needed some APIs (e.g. fitbit)
(@cosmomeese, #503).
oauth_endpoints() contains updated urls for Yahoo (@ctrombley, #493)
and Vimeo (#491).
OAuth 2.0 token refresh gives a more informative error if it fails (#516).
Prior to token retrieval from on-disk cache, scopes are de-duplicated, sorted, and stripped of names before being hashed. This eliminates a source of hash mismatch that causes new tokens to be requested, even when existing tokens had the necessary scope. (@jennybc, #495)
Updates to demos:
The Facebook OAuth demo now uses device flow (#510). This allows you to continue using the FB api from R under their new security policy.
A new Noun Project demo shows how to use one-legged OAuth1 (@cderv, #548).
The Vimeo demo has been updated from OAuth 1.0 to 2.0 (#491).
cache_info() now handles un-named flags, as illustrated by "private" when
the server returns "private, max-age = 0".
parse_http_date() gets a better default value for the failure argument
so that reponses with unparseable dates can be printed without error
(@shrektan, #544).
POST() now uses 22 digits of precision for body list elements by default
(@jmwerner, #490)
RETRY() now terminates on any successful request, regardless of the value
of terminate_on. To return to the previous behaviour, set
terminate_on_success = FALSE (#522).
In RETRY() and VERB(), HEAD requests now succeed (#478, #499).
Encoding falls back to UTF-8 if not supplied and content-type parsing fails (#500).
Non-http(s) headers are no longer parsed (@billdenney, #537). This makes it possible to use httr with protocols other than http, although this is not advised, and you're own your own.
Deprecated safe_callback() has been removed.
is_interactive argument to init_oauth1.0(), init_oauth2.0() and
oauth_listener() has been deprecated, as the R session does not actually
need to be interactive.
New set_callback() and get_callback() set and query callback functions
that are called right before and after performing an HTTP request
(@gaborcsardi, #409)
RETRY() now retries if an error occurs during the request (@asieira, #404),
and gains two new arguments:
terminate_on gives you greater control over which status codes should
it stop retrying. (@asieira, #404)
pause_min allows for sub-second delays. (Use with caution! Generally the
default is preferred.) (@r2evans)
If the server returns HTTP status code 429 and specifies a retry-after
value, that value will now be used instead of exponential backoff with
jitter, unless it's smaller than pause_min. (@nielsoledam, #472)
New oauth cache files are always added to .gitignore and, if it exists,
.Rbuildignore. Specifically, this now happens when option
httr_oauth_cache = TRUE or user specifies cache file name explicitly.
(@jennybc, #436)
oauth_encode() now handles UTF-8 characters correctly.
(@yutannihilation, #424)
oauth_app() allows you to specify the redirect_url if you need to
customise it.
oauth_service_token() gains a sub parameter so you can request
access on behalf of another user (#410), and accepts a character vector
of scopes as was described in the documentation (#389).
oauth_signature() now normalises the URL as described in the OAuth1.0a
spec (@leeper, #435)
New oauth2.0_authorize_url() and oauth2.0_access_token() functions
pull out parts of the OAuth process for reuse elsewhere (#457).
oauth2.0_token() gains three new arguments:
config_init allows you to supply additional config for the initial
request. This is needed for some APIs (e.g. reddit) which rate limit
based on user_agent (@muschellij2, #363).
client_credentials, allows you to use the OAauth2 Client Credential
Grant. See RFC 6749
for details. (@cderv, #384)
A credentials argument that allows you to customise the auth flow.
For advanced used only (#457)
is_interactive argument to init_oauth1.0(), init_oauth2.0() and
oauth_listener() has been deprecated, as the R session does not need
to be interactive.
BROWSER() prints a message telling you to browse to the URL if called
in a non-interactive session.
find_cert_bundle() will now correctly find cert bundle in "R_HOME/etc"
(@jiwalker-usgs, #386).
You can now send lists containing curl::form_data() in the body of
requests with `encoding = "multipart". This makes it possible to specify the
mime-type of individual components (#430).
modify_url() recognises more forms of empty queries. This eliminates a
source of spurious trailing ? and ?= (@jennybc, #452).
The length() method of the internal path class is no longer exported
(#395).
oauth_signature() no longer prepends 'oauth_' to additional parameters.
(@jimhester, #373)
All print() methods now invisibly return x (#355).
DELETE() gains a body parameter (#326).
New encode = "raw" allows you to do your own encoding for requests with
bodies.
New http_type() returns the content/mime type of a request, sans parameters.
No longer uses use custom requests for standard POST requests (#356,
#357). This has the side-effect of properly following redirects after
POST, fixing some login issues (eg hadley/rvest#133).
Long deprecated multipart argument to POST(), PUT() and PATCH()
has been removed.
The cross-session OAuth cache is now created with permission 0600, and should give a better error if it can't be created (#365).
New RETRY() function allows you to retry a request multiple times until
it succeeds (#353).
The default user agent string is now computed once and cached. This is a small performance improvement, but important for local connections (#322, @richfitz).
oauth_callback() gains trailing slash for facebook compatibility (#324).
progress() gains con argument to control where progress bar is rendered
(#359).
When use_basic_auth option is used to obtain a token, token refreshes
will now use basic authentication too.
Suppress unhelpful "No encoding supplied: defaulting to UTF-8." when printing a response (#327).
All auto parser functions now have consistent arguments. This fixes problem
where ... is pass on to another function (#330).
parse_media() can once again parse multiple parameters (#362, #366).
Correctly cast config in POST().
Fix in readfunction to close connection when done.
stop_for_status(), warn_for_status() and (new) message_for_status()
replace message argument with new task argument that optionally describes
the current task. This allows API wrappers to provide more informative
error messages on failure (#277, #302). stop_for_status() and
warn_for_status() return the response if there were no errors. This
makes them easier to use in pipelines (#278).
url_ok() and url_successful() have been deprecated in favour of the more
flexible http_error(), which works with urls, responses and integer status
codes (#299).
oauth1.0_token() gains RSA-SHA1 signature support with the private_key
argument (@nathangoulding, #316).
oauth2.0_token() throws an error if it fails to get an access token (#250)
and gains two new arguments:
oauth_service_token() checks that its arguments are the correct types
(#282) and anways returns a request object (#313, @nathangoulding).
refresh_oauth2.0() checks for known OAuth2.0 errors and clears the
locally cached token in the presense of any (@nathangoulding, #315).
httr no longer bundles cacert.pem, and instead it relies on the bundle in
openssl. This bundle is only used a last-resort on windows with R <3.2.0.
Switch to 'openssl' package for hashing, hmac, signatures, and base64.
httr no longer depends on stringr (#285, @jimhester).
build_url() collapses vector path with / (#280, @artemklevtsov).
content(x) uses xml2 for XML documents and readr for csv and tsv.
content(, type = "text") defaults to UTF-8 encoding if not otherwise
specified.
has_content() correctly tests for the presence/absence of body content (#91).
parse_url() correctly parses urls like file:///a/b/c work (#309).
progress() returns TRUE to fix for 'progress callback must return boolean'
warning (@jeroenooms, #252).
upload_file() supports very large files (> 2.5 Gb) (@jeroenooms, #257).
httr no longer uses the RCurl package. Instead it uses the curl package, a modern binding to libcurl written by Jeroen Ooms (#172). This should make httr more reliable and prevent the "easy handle already used in multi handle" error. This change shouldn't affect any code that uses httr - all the changes have happened behind the scenes.
The oauth_listener can now listen on a custom IP address and port (the
previously hardwired ip:port of 127.0.0.1:1410 is now just the default).
This permits authentication to work under other settings, such as inside
docker containers (which require localhost uses 0.0.0.0 instead). To
configure, set the system environmental variables HTTR_LOCALHOST and
HTTR_PORT respectively (@cboettig, #211).
POST(encode = 'json') now automatically turns length-1 vectors into json
scalars. To prevent this automatic "unboxing", wrap the vector in I()
(#187).
POST(), PUT() and PATCH() now drop NULL body elements. This is
convenient and consistent with the behaviour for url query params.
cookies argument to handle() is deprecated - cookies are always
turned on by default.
brew_dr() has been renamed to httr_dr() - that's what it should've
been in the first place!
content(type = "text") compares encodings in a case-insensitive manner
(#209).
context(type = "auto") uses a better strategy for text based formats (#209).
This should allow the encoding argument to work more reliably.
config() now cleans up duplicated options (#213).
Uses CURL_CA_BUNDLE environment variable to look for cert bundle on
Windows (#223).
safe_callback() is deprecated - it's no longer needed with curl.
POST() and PUT() now clean up after themselves when uploading a single
file (@mtmorgan).
proxy() gains an auth argument which allows you to pick the type of
http authentication used by the proxy (#216).
VERB() gains body and encode arguments so you can generate
arbitrary requests with a body.
tumblr added as an oauth_endpoint.
Correctly parse headers with multiple :, thanks to @mmorgan (#180).
In content(), if no type is provided to function or specified in headers,
and we can't guess the type from the extension, we now assume that it's
application/octet-stream (#181).
Throw error if timeout() is less than 1 ms (#175).
Improved LinkedIn OAuth demo (#173).
New write_stream() allows you to process the response from a server as
a stream of raw vectors (#143).
Suport for Google OAuth2 service accounts. (#119, thanks to help from @siddharthab).
VERB() allows to you use custom http verbs (#169).
New handle_reset() to allow you to reset the handle if you get the error
"easy handle already used in multi handle" (#112).
Uses R6 instead of RC. This makes it possible to extend the OAuth classes from outside of httr (#113).
Now only set capath on Windows - system defaults on linux and mac ox
seem to be adequate (and in some cases better). I've added a couple of tests
to ensure that this continues to work in the future.
vignette("api-packages") gains more detailed instructions on
setting environment variables, thanks to @jennybc.
Add revoke_all() to revoke all stored tokens (if possible) (#77).
Fix for OAuth 2 process when using options(httr_oob_default = TRUE)
(#126, @WillemPaling).
New brew_dr() checks for common problems. Currently checks if your libCurl
uses NSS. This is unlikely to work so it gives you some advice on how to
fix the problem (thanks to @eddelbuettel for debugging this problem).
Content-Type set to title case to avoid errors in servers which do not
correctly implement case insensitivity in header names. (#142, #146) thanks
to Håkon Malmedal (@hmalmedal) and Jim Hester (@jimhester).
Correctly parse http status when it only contains two components (#162).
Correctly parse http headers when field name is followed by any amount (including none) of white space.
Default "Accepts" header set to
application/json, text/xml, application/xml, */*: this should slightly
increase the likelihood of getting xml back. application/xml is correctly
converted to text before being parsed to XML::xmlParse() (#160).
Make it again possible to override the content type set up by POST()
when sending data (#140).
New safe_callback() function operator that makes R functions safe for
use as RCurl callbacks (#144).
Added support for passing oauth1 tokens in URL instead of the headers (#145, @bogstag).
Default to out-of-band credential exchange when httpuv isn't installed.
(#168)
new_token() has been removed - this was always an internal function
so you should never have been using it. If you were, switch to creating
the tokens directly.
Deprecate guess_media(), and instead use mime::guess_type() (#148).
You can now save response bodies directly to disk by using the write_disk()
config. This is useful if you want to capture large files that don't fit in
memory (#44).
Default accept header is now "application/json, text/xml, /" - this should encourage servers to send json or xml if they know how.
httr_options() allows you to easily filter the options, e.g.
httr_options("post")
POST() now specifies Curl options more precisely so that Curl know's
that you're doing a POST and can respond appropriately to redirects.
Preliminary and experimental support for caching with cache_info() and
rerequest() (#129). Be aware that this API is likely to change in
the future.
parse_http_date() parses http dates according RFC2616 spec.
Requests now print the time they were made.
Mime type application/xml is automatically parsed with ``XML::xmlParse()`.
(#128)
Now possible to specify both handle and url when making a request.
content(type = "text") uses readBin() instead of rawToChar() so
that strings with embedded NULLs (e.g. WINDOWS-1252) can be re-encoded
to UTF-8.
DELETE() now returns body of request (#138).
headers() is now a generic with a method for response objects.
parse_media() failed to take into account that media types are
case-insenstive - this lead to bad re-encoding for content-types like
"text/html; Charset=UTF-8"
Typo which broke set_cookies() fixed by @hrbrmstr.
url_ok() works correctly now, instead of always returning FALSE,
a bug since version 0.4 (#133).
Remove redundant arguments simplifyDataFrame and simplifyMatrix for json parser.
New headers() and cookies() functions to extract headers and cookies
from responses. Previoulsy internal status_code() function now exported
to extract status_code() from responses.
POST(), PUT(), and PATCH() now use encode argument to determine how
list inputs are encoded. Valid values are "multiple", "form" or "json".
The multipart argument is now deprecated (#103). You can stream a single
file from disk with upload_file("path/"). The mime type will be guessed
from the extension, or can be supplied explicitly as the second argument to
upload_file().
progress() will display a progress bar, useful if you're doing large
uploads or downloads (#17).
verbose() now uses a custom debug function so that you can see exactly
what data is sent to the server. Arguments control exactly what is included,
and the defaults have been selected to be more helpful for the most common
cases (#102).
with_verbose() makes it easier to see verbose information when http
requests are made within other functions (#87).
New quickstart vignette to help you get up and running with httr.
New api-packages vignette describes how best practices to follow when
writing R packages that wrap web APIs.
httr_options() lists all known config options, translating between
their short R names and the full libcurl names. The curl_doc() helper
function allows you to jump directly to the online documentation for an
option.
authenticate() now defaults to type = "basic" which is pretty much the
only type of authentication anyone uses.
Updated cacert.pem to version at 2014-04-22 (#114).
content_type(), content_type_xml() and content_type_json() make it
easier to set the content type for POST requests (and other requests with
a body).
has_content() tells you if request has any content associated with it (#91).
Add is_interactive() parameter to oauth_listener(), init_oauth1.0() and
init_oauth2.0() (#90).
oauth_signature() and oauth_header() now exported to make it easier to
construct custom authentication for APIs that use only some components of
the full OAuth process (e.g. 2 legged OAuth).
NULL query parameters are now dropped automatically.
When print()ing a response, httr will only attempt to print the first few
lines if it's a text format (i.e. either the main type is text or is
application/json). It will also truncate each line so that it fits on
screen - this should hopefully make it easier to see a little bit of the
content, without filling the screen with gibberish.
new_bin() has been removed: it's easier to see what's going on in
examples with httpbin.org.
user_agent() once again overrides default (closes #97)
parse(type = "auto") returns NULL if no content associated with request
(#91).
Better strategy for resetting Curl handles prevents carry-over of error status and other problems (#112).
set_config() and with_config() now work with tokens (#111).
OAuth 2.0 has recieved a major overhaul in this version. The authentication dance now works in more environments (including RStudio), and is generally a little faster. When working on a remote server, or if R's internet connection is constrained in other ways, you can now use out-of-band authentication, copying and pasting from any browser to your R session. OAuth tokens from endpoints that regularly expire access tokens can now be refreshed, and will be refresh automatically on authentication failure.
httr now uses project (working directory) based caching: every time you
create or refresh a token, a copy of the credentials will be saved in
.httr-oauth. You can override this default for individual tokens with the
cache parameter, or globally with the httr_oauth_cache option. Supply
either a logical vector (TRUE = always cache, FALSE = never cache,
NA = ask), or a string (the path to the cache file).
You should NOT include this cache file in source code control - if you do,
delete it, and reset your access token through the corresponding web interface.
To help, httr will automatically add appropriate entries to .gitignore and
.Rbuildignore.
These changes mean that you should only ever have to authenticate once per project, and you can authenticate from any environment in which you can run R. A big thanks go to Craig Citro (@craigcitro) from google, who contributed much code and many ideas to make this possible.
The OAuth token objects are now reference classes, which mean they can be
updated in place, such as when an access token expires and needs to be
refreshed. You can manually refresh by calling $refresh() on the object.
You can force reinitialisation (to do the complete dance from
scratch) by calling $reinit(force = TRUE).
If a signed OAuth2 request fails with a 401 and the credentials have a
refresh_token, then the OAuth token will be automatically refreshed (#74).
OAuth tokens are cached locally in a file called .httr-oauth (unless
you opt out). This file should not be included in source code control,
and httr will automatically add to .gitignore and .Rbuildignore.
The caching policy is described in more detail in the help for the
Token class.
The OAuth2 dance can now be performed without running a local webserver
(#33, thanks to @craigcitro). To make that the default, set
options(httr_oob_default = TRUE). This is useful when running R remotely.
Add support for passing oauth2 tokens in headers instead of the URL, and make this the default (#34, thanks to @craigcitro).
OAuth endpoints can store arbitrary extra urls.
Use the httpuv webserver for the OAuth dance instead of the built-in httpd server (#32, thanks to @jdeboer). This makes the dance work in Rstudio, and also seems a little faster. Rook is no longer required.
oauth_endpoints() includes some popular OAuth endpoints.
HTTP verbs (GET(), POST() etc) now pass unnamed arguments to config()
and named arguments to modify_url() (#81).
The placement of ... in POST(), PATCH() and PUT() has been tweaked
so that you must always specify body and multipart arguments with their
full name. This has always been recommended practice; now it is enforced.
httr includes its own copy of cacert.pem, which is more recent than
the version included in RCurl (#67).
Added default user agent which includes versions of Curl, RCurl and httr.
Switched to jsonlite from rjson.
Content parsers no longer load packages on to search path.
stop_for_status() now raises errors with useful classes so that you can
use tryCatch() to take different actions depending on the type of error.
See http_condition() for more details.
httr now imports the methods package so that it works when called with Rscript.
New automatic parsers for mime types text/tab-separated-values and
text/csv (#49)
Add support for fragment in url building/parsing (#70, thanks to
@craigcitro).
You can suppress the body entirely in POST(), PATCH() and PUT()
with body = FALSE.
If you supply multiple headers of the same name, the value of the most recently set header will always be used.
Urls with missing query param values (e.g. http://x.com/?q=) are now
parsed correctly (#27). The names of query params are now also escaped
and unescaped correctly when parsing and building urls.
Default html parser is now XML::htmlParse() which is easier to use
with xpath (#66).
OAuth now uses custom escaping function which is guaranteed to work on all platforms (Fixes #21)
When concatenating configs, concatenate all the headers. (Fixes #19)
export hmac_sha1 since so many authentication protocols need this
content will automatically guess what type of output (parsed, text or raw)
based on the content-type header. It also automatically converts text
content to UTF-8 (using the charset in the media type) and can guess at mime
type from extension if server doesn't supply one. Media type and encoding
can be overridden with the type and encoding arguments respectively.
response objects automatically print content type to aid debugging.
text_content has become context(, "text") and parsed_content
content(, "parsed"). The previous calls are deprecated and will be removed
in a future version.
In oauth_listener, use existing httpd port if help server has already been
started. This allows the ouath authentication dance to work if you're in
RStudio. (Fixes #15).
add several functions related to checking the status of an http request.
Those are : status, url_ok and url_success as well as
stop_for_status and warn_for_status.
build_url: correctly add params back into full url.
Add new default config: use the standard SSL certificate
Add recommendation to use custom handles with authenticate