RCurl v1.95-4.12
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General Network (HTTP/FTP/...) Client Interface for R
A wrapper for 'libcurl' <http://curl.haxx.se/libcurl/>
Provides functions to allow one to compose general HTTP requests
and provides convenient functions to fetch URIs, get & post
forms, etc. and process the results returned by the Web server.
This provides a great deal of control over the HTTP/FTP/...
connection and the form of the request while providing a
higher-level interface than is available just using R socket
connections. Additionally, the underlying implementation is
robust and extensive, supporting FTP/FTPS/TFTP (uploads and
downloads), SSL/HTTPS, telnet, dict, ldap, and also supports
cookies, redirects, authentication, etc.
Functions in RCurl
| Name | Description | |
| HTTP_VERSION_1_0 | Symbolic constants for specifying HTTP and SSL versions in libcurl | |
| MultiCURLHandle-class | Class "MultiCURLHandle" for asynchronous, concurrent HTTP requests | |
| curlError | Raise a warning or error about a CURL problem | |
| curlEscape | Handle characters in URL that need to be escaped | |
| CURLHandle-class | Class "CURLHandle" for synchronous HTTP requests | |
| basicHeaderGatherer | Functions for processing the response header of a libcurl request | |
| findHTTPHeaderEncoding | Find the encoding of the HTTP response from the HTTP header | |
| AUTH_ANY | Constants for identifying Authentication Schemes | |
| CFILE | Create a C-level handle for a file | |
| basicTextGatherer | Cumulate text across callbacks (from an HTTP response) | |
| clone | Clone/duplicate an object | |
| ftpUpload | Upload content via FTP | |
| complete | Complete an asynchronous HTTP request | |
| getCurlInfo | Access information about a CURL request | |
| getFormParams | Extract parameters from a form query string | |
| RCurlInternal | Internal functions | |
| binaryBuffer | Create internal C-level data structure for collecting binary data | |
| chunkToLineReader | Utility that collects data from the HTTP reply into lines and calls user-provided function. | |
| curlGlobalInit | Start and stop the Curl library | |
| CurlFeatureBits | Constants for libcurl | |
| curlOptions | Constructor and accessors for CURLOptions objects | |
| getBinaryURL | Download binary content | |
| getURIAsynchronous | Download multiple URIs concurrently, with inter-leaved downloads | |
| getBitIndicators | Operate on bit fields | |
| base64 | Encode/Decode base64 content | |
| getURL | Download a URI | |
| curlPerform | Perform the HTTP query | |
| curlVersion | Information describing the Curl library | |
| dynCurlReader | Dynamically determine content-type of body from HTTP header and set body reader | |
| merge.list | Method for merging two lists by name | |
| curlSetOpt | Set values for the CURL options | |
| CURLEnums | Classes and coercion methods for enumerations in libcurl | |
| fileUpload | Specify information about a file to upload in an HTTP request | |
| mimeTypeExtensions | Mapping from extension to MIME type | |
| postForm | Submit an HTML form | |
| reset | Generic function for resetting an object | |
| scp | Retrieve contents of a file from a remote host via SCP (Secure Copy) | |
| guessMIMEType | Infer the MIME type from a file name | |
| httpPUT | Simple high-level functions for HTTP PUT and DELETE | |
| url.exists | Check if URL exists | |
| getCurlErrorClassNames | Retrieve names of all curl error classes | |
| getCurlHandle | Create libcurl handles | |
| No Results! | ||
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Details
| SystemRequirements | GNU make, libcurl |
| License | BSD |
| URL | http://www.omegahat.net/RCurl |
| Additional_repositories | http://www.omegahat.net/R/ |
| Limitations | One doesn't yet have full control over the contents of a POST form such as specifying files, content type. Error handling uses a single global variable at present. |
| Note | This will be used generally to communicate with HTTP servers and specifically in the SOAP package, HTML forms and for accessing data on Web sites that require more state information than simply URL access (e.g. cookies). |
| Check | To run R CMD check, one really needs network access. It is an HTTP client! This can be problematic as a Web site may be down when you run but the real tests are important. |
| Collate | aclassesEnums.R bitClasses.R xbits.R base64.R binary.S classes.S curl.S curlAuthConstants.R curlEnums.R curlError.R curlInfo.S dynamic.R form.S getFormParams.R getURLContent.R header.R http.R httpError.R httpErrors.R iconv.R info.S mime.R multi.S options.S scp.R support.S upload.R urlExists.R zclone.R zzz.R |
| NeedsCompilation | yes |
| Packaged | 2019-03-03 18:59:27 UTC; ripley |
| Repository | CRAN |
| Date/Publication | 2019-03-04 09:45:33 UTC |
| depends | bitops , methods , R (>= 3.0.0) |
| suggests | Rcompression , XML |
| Contributors | Duncan Lang, The team |
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