Cancels async operation
Performs async GET to file
Performs async GET to string
Performs async HEAD request
Performs async POST from file
Performs async POST from file to file
Performs async POST from string
Enables response encodings
Enables fresh connection
Enables host verification
Enables peer verification
Enables resume capability
URL escapes text
Gets failure reason
Gets transfer identity
Gets request string
Performs GET to file
Performs GET to string
Gets URL
Performs HEAD request
Performs POST from file
Performs POST from string
Sets body retention on error
Sets HTTP version
Sets minimum transfer rate
Sets request string
Sets URL
Sets authentication
URL unescapes text
URL encodes string
Interface for URL transfer operations.