|
PcapPlusPlus
Next
|
|
PcapPlusPlus
Next
|
#include <PcapLiveDevice.h>
Public Member Functions | |
| DeviceConfiguration (DeviceMode mode=Promiscuous, int packetBufferTimeoutMs=0, int packetBufferSize=0, PcapDirection direction=PCPP_INOUT, int snapshotLength=0, unsigned int nflogGroup=0, bool usePoll=false) | |
Public Attributes | |
| DeviceMode | mode |
| int | packetBufferTimeoutMs |
| int | packetBufferSize |
| PcapDirection | direction |
| int | snapshotLength |
| unsigned int | nflogGroup |
| bool | usePoll |
| In Unix-like system, use poll() for blocking mode. | |
A struct that contains user configurable parameters for opening a device. All parameters have default values so the user isn't expected to set all parameters or understand exactly how they work
|
inlineexplicit |
A c'tor for this struct
| [in] | mode | The mode to open the device: promiscuous or non-promiscuous. Default value is promiscuous |
| [in] | packetBufferTimeoutMs | Buffer timeout in millisecond. Default value is 0 which means set timeout of 1 or -1 (depends on the platform) |
| [in] | packetBufferSize | The packet buffer size. Default value is 0 which means use the default value (varies between different OS's) |
| [in] | direction | Direction for capturing packets. Default value is INOUT which means capture both incoming and outgoing packets (not all platforms support this) |
| [in] | snapshotLength | Snapshot length for capturing packets. Default value is 0 which means use the default value. A snapshot length of 262144 should be big enough for maximum-size Linux loopback packets (65549) and some USB packets captured with USBPcap (> 131072, < 262144). A snapshot length of 65535 should be sufficient, on most if not all networks, to capture all the data available from the packet. |
| [in] | nflogGroup | NFLOG group for NFLOG devices. Default value is 0. |
| [in] | usePoll | use poll() when capturing packets in blocking more (startCaptureBlockingMode()) on Unix-like system. Default value is false. |
| PcapDirection pcpp::PcapLiveDevice::DeviceConfiguration::direction |
Set the direction for capturing packets. You can read more here: https://www.tcpdump.org/manpages/pcap.3pcap.html#lbAI.
| DeviceMode pcpp::PcapLiveDevice::DeviceConfiguration::mode |
Indicates whether to open the device in promiscuous or normal mode
| unsigned int pcpp::PcapLiveDevice::DeviceConfiguration::nflogGroup |
Set NFLOG group. Which NFLOG group to be listened to when connecting to NFLOG device. If device is not of type NFLOG this attribute is ignored.
| int pcpp::PcapLiveDevice::DeviceConfiguration::packetBufferSize |
Set the packet buffer size. You can read more about the packet buffer here: https://www.tcpdump.org/manpages/pcap.3pcap.html . Any value of 100 or above is considered valid, otherwise the default value is used (which varies between different OS's). However, please notice that setting values which are too low or two high may result in failure to open the device. These too low or too high thresholds may vary between OS's, as an example please refer to this thread: https://stackoverflow.com/questions/11397367/issue-in-pcap-set-buffer-size
| int pcpp::PcapLiveDevice::DeviceConfiguration::packetBufferTimeoutMs |
Set the packet buffer timeout in milliseconds. You can read more here: https://www.tcpdump.org/manpages/pcap.3pcap.html . Any value above 0 is considered legal, otherwise a value of 1 or -1 is used (depends on the platform)
| int pcpp::PcapLiveDevice::DeviceConfiguration::snapshotLength |
Set the snapshot length. Snapshot length is the amount of data for each frame that is actually captured. Note that taking larger snapshots both increases the amount of time it takes to process packets and, effectively, decreases the amount of packet buffering. This may cause packets to be lost. Note also that taking smaller snapshots will discard data from protocols above the transport layer, which loses information that may be important. You can read more here: https://wiki.wireshark.org/SnapLen
1.9.1