def handshake_step_one():
http.build_empty_http_header()
tcp.build_tcp_header(global_data.get_value("local_port"), 80, 0, 0, 5, 0,
1, 0, 0, 0)
ip.build_ip_header()
ethernet.build_ethernet_header_for_ip()
data_transfer.send_packet_to_server()
def send_ack_to_server(seq_no):
http.build_empty_http_header()
tcp.build_tcp_header(global_data.get_value("local_port"), 80,
1 + global_data.get_value("http_request_length"),
seq_no + 1, 5, 0, 0, 0, 0, 1)
ip.build_ip_header()
ethernet.build_ethernet_header_for_ip()
send_packet_to_server()
def handshake_step_three():
http.build_empty_http_header()
tcp.build_tcp_header(global_data.get_value("local_port"), 80, 1,
global_data.get_value("sequence_number") + 1, 5, 0, 0,
0, 0, 1)
ip.build_ip_header()
ethernet.build_ethernet_header_for_ip()
data_transfer.send_packet_to_server()
def send_fin_ack_to_server():
http.build_empty_http_header()
tcp.build_tcp_header(global_data.get_value("local_port"), 80,
global_data.get_value("acknowledge_number"),
int(global_data.get_value("sequence_number")) + 1, 5,
1, 0, 0, 0, 1)
ip.build_ip_header()
ethernet.build_ethernet_header_for_ip()
send_packet_to_server()
def send_data_to_server():
"""
send http request to server
"""
http.build_http_header()
tcp.build_tcp_header(global_data.get_value("local_port"), 80, 1,
int(global_data.get_value("sequence_number")), 5, 0,
0, 0, 1, 1)
ip.build_ip_header()
ethernet.build_ethernet_header_for_ip()
send_packet_to_server()