MessageHttp

Summary

Represents a HTTP Message object

Methods: MessageHttp.capture()

MessageHttp.capture_list()

MessageHttp.close_writer()

MessageHttp.connect()

MessageHttp.disconnect()

MessageHttp.get_all_bytes()

MessageHttp.get_bytes()

MessageHttp.get_hex_bytes()

MessageHttp.hex_view()

MessageHttp.is_segmented()

MessageHttp.open_writer()

MessageHttp.receive()

MessageHttp.receive_list()

MessageHttp.send()

MessageHttp.send_receive()

MessageHttp.send_receive_list()

MessageHttp.set_all_bytes()

MessageHttp.set_bytes()

MessageHttp.start_capture()

MessageHttp.start_listener()

MessageHttp.start_responding_machine()

MessageHttp.stop_capture()

MessageHttp.stop_listener()

MessageHttp.stop_responding_machine()

MessageHttp.store()

MessageHttp.tree_view()
Properties: MessageHttp.capture_info

MessageHttp.connected

MessageHttp.data_base

MessageHttp.ethernet_header

MessageHttp.frame_number

MessageHttp.headers

MessageHttp.http_protocol

MessageHttp.ip_header

MessageHttp.ipv4_header

MessageHttp.ipv6_header

MessageHttp.method

MessageHttp.network_protocol

MessageHttp.payload

MessageHttp.status_code

MessageHttp.status_description

MessageHttp.tcp_header

MessageHttp.timestamp

MessageHttp.transport_header

MessageHttp.transport_protocol

MessageHttp.uri

MessageHttp.vlan_tag
Events: MessageHttp.on_capture_start()

MessageHttp.on_capture_stop()

MessageHttp.on_message_received()

Structure

class MessageHttp

capture(filter: Filter = None) → MessageHttp

Matches any message with the same protocol.

Parameters: filter (Filter) – Filter to use to narrow down packets to capture
Returns: Listens to the bus until a message is received and returns this first message
Return type: MessageHttp

capture(timeout: int32, filter: Filter = None) → MessageHttp

Waits for the first message having the same protocol that the sent message without verify the IP address and the port between send and respond message and return it. A timeout is specified to guarantee that the script can continue if no message is captured in a certain time interval.

Parameters

timeout (int32) – Max time in milliseconds to wait for the response.
filter (Filter) – Filter to use to narrow down packets to capture

Returns

First message captured from the bus or None in case no message is received.

Return type

MessageHttp

capture_list(timeout: int32, filter: Filter = None) → IReadOnlyList[MessageHttp]

Waits for any response having the same protocol that the sent message without verify the IP address and the port between send and respond message and return them all as a list. A timeout is specified to guarantee that the script can continue if no message is received in a certain time interval.

Parameters

timeout (int32) – Max time in milliseconds to wait for the response.
filter (Filter) – Filter to use to narrow down packets to capture

Returns

List of messages captured from the bus during a given period of time.

Return type

IReadOnlyList[MessageHttp]

close_writer(): Closes the file previously created with open_writer(file).

connect(timeout: float = 1) → bool

Opens a TCP connection.

Parameters: timeout (float) – Number of seconds to wait for connection to establish before aborting.
Returns: for connect() returns True if there’s a connection.
Return type: bool

disconnect(timeout: float = 0)

Closes the TCP connection opened with connect.

Parameters: timeout (float) – Number of seconds to wait for connection to close before aborting. If timeout is 0 (default) the connection would be closed with a TCP RST instead of normal TCP FIN, this prevents the connection from remaining stuck in the TIME_WAIT state for two minutes.

get_all_bytes() → Array[uint8]

Gets the content of the whole message from Ethernet layer.

Returns: Array of bytes representing the message from Ethernet layer.
Return type: Array[uint8]

get_bytes() → Array[uint8]

Gets the content of the payload.

Returns: Array of bytes representing the payload of the message.
Return type: Array[uint8]

get_hex_bytes() → str

Converts the payload of the message from decimal to hex and outputs it to a string of bytes.

Returns: Payload of message in hex bytes.
Return type: str

hex_view() → str

Allows to visualize messages in hexadecimal format.

Returns: Hexadecimal representation of the whole message.
Return type: str

hex_view(nb_bytes_per_line: int32) → str

Allows to visualize messages in hexadecimal format.

Parameters: nb_bytes_per_line (int32) – (optional) number of bytes per line.
Returns: Hexadecimal representation of the whole message.
Return type: str

is_segmented() → bool

Checks if the message is segmented.

Returns: True if the message is segmented. False if not
Return type: bool

open_writer(file: str, fileFormat: FILEFORMAT or None = None)

Creates a PCAP or PCAPNG file for writing the received messages. If the file already exists, it will be overwritten (old file data will be lost). Use the store() method to record received messages into the file.

Parameters

file (str) – Absolute path of the file where the messages will be stored
fileFormat (FILEFORMAT or None) – Obsolete, you don't need to specify this argument anymore

receive() → MessageHttp

Matches a response for the used message.

Returns: Listens to the bus until a message is received and returns this first message
Return type: MessageHttp

receive(timeout: int32) → MessageHttp

Waits for the first response having the IP address destination equals to the IP address source of the sent message and return it. A timeout is specified to guarantee that the script can continue if no message is received in a certain time interval.

Parameters: timeout (int32) – Max time in milliseconds to wait for the response.
Returns: First message received from the bus or None in case no message is received.
Return type: MessageHttp

receive_list(timeout: int32) → IReadOnlyList[MessageHttp]

Waits for any response having the IP address destination equals to the IP address source of sent message and return them all as a list. A timeout is specified to guarantee that the script can continue if no message is received in a certain time interval.

Parameters: timeout (int32) – Max time in milliseconds to wait for the response.
Returns: List of messages received from the bus during a given period of time.
Return type: IReadOnlyList[MessageHttp]

send() → bool

Sends the message (the one used to call the method) through the Ethernet bus.

Returns: Returns True if the message is sent successfully. Otherwise, an exception will be thrown.
Return type: bool

send_receive(timeout: int32 = 1000) → MessageHttp

Sends the message (the one used to call the method) through the Ethernet bus and waits for a possible response, i.e. a message from the target address to our own address. It is possible to specify a timeout to guarantee that the script can continue if no response is detected in a certain time interval.

Parameters: timeout (int32) – (optional) Max time in milliseconds to wait for the response. Default 1 second
Returns: First message detected from the destination address to our address. This can be the response to the message sent but it is not 100% guaranteed; additional traffic can be captured before this expected response and thus returned.
Return type: MessageHttp

send_receive_list(timeout: int32) → IReadOnlyList[MessageHttp]

Sends the message through the Ethernet bus, listens for a while and returns a list with all the messages captured in that period. It is possible to specify a timeout to guarantee that the script can continue if no response is detected in a certain time interval.

Parameters: timeout (int32) – Max time in milliseconds to wait for the response.
Returns: List of messages detected from the destination address to our address. This can be the response to the message sent but it is not 100% guaranteed; additional traffic can be captured before this expected response and thus returned.
Return type: IReadOnlyList[MessageHttp]

set_all_bytes(all_packet: Array[uint8]) → bool

Sets the content of the whole message from Ethernet layer, byte per byte.

Parameters: all_packet (Array[uint8]) – All packet to set.
Returns: True if the operation was successful, False otherwise.
Return type: bool

set_bytes(payload: Array[uint8])

Sets the content of the payload, byte per byte.

Parameters: payload (Array[uint8]) – Array of bytes to set.

start_capture(filter: Filter = None)

Used for online capture(capturing network traffic from an adapter). Used with callback function(on_message_received()) and stop_capture() method.

Parameters: filter (Filter) – Filter to use to narrow down packets to capture

start_capture(file: str, wait_eof: bool, filter: Filter = None)

Used for offline capture(reading packets from pcap or asc file). Used with callback function(on_message_received()) and stop_capture() method.

Parameters

file (str) – The trace file from where the messages will be read.
wait_eof (bool) – If True the function would block until all frames in the file are read. If False the function would read the frames in the background.
filter (Filter) – Filter to use to narrow down packets to capture

start_listener(): Starts listening for TCP clients through the receiver network adapter.

start_responding_machine(): With this function, it is possible to simulate an ECU. It captures packets and, for every received message, it calls is_request callback. If it returns True, then it calls the make_reply callback

stop_capture(): Stops capturing Ethernet messages, either directly from the bus or from a trace file (depending on the version used to start the capture).

stop_listener(timeout: float = 0)

Stops listening for TCP clients through the receiver network adapter.

Parameters: timeout (float) – Number of seconds to wait for connection to close before aborting. If timeout is 0 (default) the connection would be closed with a TCP RST instead of normal TCP FIN, this prevents the connection from remaining stuck in the TIME_WAIT state for two minutes.