curlError
(Package: RCurl) :
Raise a warning or error about a CURL problem
This function is called to raise an error or warning that arises from a curl operation when making a request. This is called from C code that encounters the error and this function is responsible for generating the error.
● Data Source:
CranContrib
● Keywords: IO, programming
● Alias: curlError
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getFormParams
(Package: RCurl) :
Extract parameters from a form query string
This function facilitates getting the parameter names and values from a URL that is an parameterized HTML query.
● Data Source:
CranContrib
● Keywords: interface, programming
● Alias: getFormParams
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complete
(Package: RCurl) :
Complete an asynchronous HTTP request
This is a generic function that is used within the RCurl package to force the completion of an HTTP request. If the request is asynchronous, this essentially blocks until the request is completed by repeatedly asking for more information to be retrieved from the HTTP connection.
● Data Source:
CranContrib
● Keywords: IO
● Alias: complete, complete,MultiCURLHandle-method
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httpPUT
(Package: RCurl) :
Simple high-level functions for HTTP PUT and DELETE
These two functions are simple, high-level functions that implement the HTTP request methods PUT and DELETE. These can also be done by specifying the method type using the curl option customrequest. These functions merely provide a convenience wrapper for getURLContent with the HTTP method specified.
● Data Source:
CranContrib
● Keywords: programming
● Alias: httpDELETE, httpGET, httpHEAD, httpOPTIONS, httpPOST, httpPUT
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base64
(Package: RCurl) :
Encode/Decode base64 content
These functions encode and decode strings using base64 representations. base64 can be used as a single entry point with an argument to encode or decode. The other two functions perform the specific action.
● Data Source:
CranContrib
● Keywords: IO, programming
● Alias: base64, base64Decode, base64Encode
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curlPerform
(Package: RCurl) :
Perform the HTTP query
These function causes the HTTP query, that has been specified via the different options in this and other calls, to be sent and processed. Unlike in curl itself, for curlPerform one can specify all the options in this call as an atomic invocation. This avoids having to set the options and then perform the action. Instead, this is all done in one call.
● Data Source:
CranContrib
● Keywords: IO
● Alias: curlMultiPerform, curlPerform
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scp
(Package: RCurl) :
Retrieve contents of a file from a remote host via SCP (Secure Copy)
This function allows us to retrieve the contents of a file from a remote host via SCP. This is done entirely within R, rather than a command line application and the contents of the file are never written to disc. The function allows the
● Data Source:
CranContrib
● Keywords: IO, programming
● Alias: scp
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basicTextGatherer
(Package: RCurl) :
Cumulate text across callbacks (from an HTTP response)
These functions create callback functions that can be used to with the libcurl engine when it passes information to us when it is available as part of the HTTP response.
● Data Source:
CranContrib
● Keywords: IO
● Alias: basicTextGatherer, debugGatherer, multiTextGatherer
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curlVersion
(Package: RCurl) :
Information describing the Curl library
This function queries the Curl library to provide information about its characteristics when it was compiled. This tells the user about its capabilities and can be used to determine strategies.
● Data Source:
CranContrib
● Keywords: IO
● Alias: curlVersion
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CFILE
(Package: RCurl) :
Create a C-level handle for a file
This function and class allow us to work with C-level FILE handles. The intent is to be able to pass these to libcurl as options so that it can read or write from or to the file. We can also do this with R connections and specify callback functions that manipulate these connections. But using the C-level FILE handle is likely to be significantly faster for large files.
● Data Source:
CranContrib
● Keywords: IO
● Alias: CFILE, CFILE-class, close,CFILE-method
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