The following table contains a partial set of the FC++ API.

Not all classes and methods are listed here. For the complete list, please refer to the fc namespace.

FC++ API (core)

Mapping of fccl command-line parameters to C++ API calls:

Example CLI Parameter	Corresponding FC++ API	Additional Information
`-aggression 2`	fc::Options::setCongestionControl()	--congestioncontrol
`-args <filename>`	see Using fccl --args
`-autoresume`	fc::Options::setTransferResume()
`-bandwidth 25000`	fc::Options::setBandwidth()	--bandwidth and --startrate
`-block 4194304`	fc::Options::setLimits()	--blocksize and --unitsize
`-congestioncontrol`	fc::Options::setCongestionControl()	--congestioncontrol
`-connecttimeoutsec 30`	fc::Options::setTimeout()
`-donotoverwrite`	fc::Options::setOverwrite()
`-download`	fc::Control::download()
`-file <filename>`	fc::Control::prepareSingleFile()
`-file <path>`	fc::Control::prepareRecursiveDir()
`-handshake 2`	fc::Options::setSslHandshake()
`-host ftp.example.com`	fc::Options::setFtpServer()
`-host ftp.example.com:21`	fc::Options::setFtpServer()
`-keepalive 55`	fc::Options::setSocketOptions()
`-localdir /tmp`	fc::Options::setLocaldir()
`-mode ftp`	fc::Options::setMode()
`-mode tcp`	fc::Options::setMode()
`-mode udp`	fc::Options::setMode()
`-multithread 5`	fc::Options::setMultiThreaded()	--multithread and --numencoders
`-noaes`	fc::Options::setEncryption()
`-numencoders`	fc::Options::setEncoders()	--multithread and --numencoders
`-overwrite`	fc::Options::setOverwrite()
`-passwd secret`	fc::Options::setUsernameAndPassword()
`-port 21`	fc::Options::setFtpServer()	--ssl and --port
`-remotedir /incoming`	fc::Options::setRemotedir()
`-retry 3`	fc::Options::setRetries()
`-showstats`	fc::Control::getMostRecentFileStats()	--showstats
`-socketbuffersize 8192`	fc::Options::setSocketOptions()
`-ssl`	fc::Options::setEncryption()	--ssl and --port
`-startrate 5000`	fc::Options::setBandwidth()	--bandwidth and --startrate
`-tempfilename`	fc::Options::setTmpFilenames()
`-timeout 30`	fc::Options::setTimeout()
`-unitsize 1024`	fc::Options::setLimits()	--blocksize and --unitsize
`-upload`	fc::Control::upload()
`-user bob –passwd secret`	fc::Options::setUsernameAndPassword()
`-user bob/secret`	fc::Options::setUsernameAndPassword()
`-verify`	fc::Options::setMd5Verification()	--verify
`-verifymode 0`	fc::Options::setMd5Verification()
`-version`	fc::libfcVersionStr() fc::libfcBitSize()
`-waitretry 15`	fc::Options::setRetries()

FC++ API (additional)

Several other useful or relevant C++ API calls with no directly corresponding parameters in fccl:

FC++ API
fc::Control::changeDirectory()
fc::Control::cancelTransfer()
fc::Control::clearFileMap()
fc::Control::clearGlobalStats()
fc::Control::deleteFile()
fc::Control::detectApproximateDownloadSpeed()
fc::Control::detectApproximateUploadSpeed()
fc::Control::getCurrentServerReplyCode()
fc::Control::getCurrentServerReplyString()
fc::Control::getDirectoryDetails()
fc::Control::getDirectoryListing()
fc::Control::getFileMap()
fc::Control::getFileMD5()
fc::Control::getFileModificationTime()
fc::Control::getFileSize()
fc::Control::getGlobalStateAndStats()
fc::Control::getMostRecentFileStats()
fc::Control::getOptimalUnitAndBlockSizes()
fc::Control::getOptions()
fc::Control::isConnected()
fc::Control::isDirectory()
fc::Control::isFile()
fc::Control::isLoggedIn()
fc::Control::makeDirectory()
fc::Control::nameExists()
fc::Control::prepareRecursiveDir()
fc::Control::prepareSingleFile()
fc::Control::removeDirectory()
fc::Control::renameFile()
fc::Control::setNewOptions()
fc::Control::setStatsCallback()
fc::Options::getMap()
fc::Options::getStr()
fc::Options::reset()
fc::Options::setClientId()

FC++ API (formatting)

Several functions are available for convenience to format some numerical FC++ statistic values (such as times, file sizes, bandwidth transfer rates) to easy-to-read text strings:

FC++ API	Example
fc::formatBytesIEC()	`"12.45 MiB"`
fc::formatBytesSI()	`"13.05 MB"`
fc::formatBytesOldStyle()	`"12.45 MB"`
fc::formatTimeDuration()	`"45s"`
fc::formatTimeDuration2()	`"0:45"`
fc::formatTimeRecent()	`"in 45 seconds"`
fc::formatTimestamp()	`"2014-09-17 08:53:16"`
fc::formatTimestamp2()	`"2014-09-17 08:53:16.073211"`
fc::formatTransferRate()	`"125.80 Kbps"`
fc::formatTransferStatsEState()	(mostly for debug use)