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fix: Send RTMP data based on timestamps in data of tcpdump file.

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pggiroro
2025-06-22 21:36:43 +08:00
parent 8f5a829900
commit 70e1ea51ac
1 changed files with 22 additions and 0 deletions
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22
scripts/packet_replayer.py
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@@ -29,6 +29,10 @@ class PacketReplayer:
self.first_data_packet = True # 标记是否是第一个数据包
self.total_packets_sent = 0 # 发送的数据包数量
self.total_bytes_sent = 0 # 发送的总字节数
# 添加时间控制相关属性
self.first_packet_time = None # 第一个包的时间戳
self.use_original_timing = True # 是否使用原始时间间隔
self.last_packet_time = None # 上一个包的时间戳
def establish_tcp_connection(self, src_port):
"""建立TCP连接"""
@@ -185,6 +189,7 @@ class PacketReplayer:
def replay_packets(self, src_ip=None, src_port=None, protocol=None, delay=0):
"""边读取边重放数据包"""
print(f"开始读取并重放数据包到 {self.target_ip}:{self.target_port}")
print(f"使用原始时间间隔发送数据包")
try:
reader = PcapReader(self.pcap_file)
@@ -233,6 +238,19 @@ class PacketReplayer:
reader_thread.start()
connection_established = True
# 处理时间间隔
current_time = float(packet.time)
if self.first_packet_time is None:
self.first_packet_time = current_time
self.last_packet_time = current_time
elif self.use_original_timing:
# 计算与上一个包的时间差
time_diff = current_time - self.last_packet_time
if time_diff > 0:
print(f"等待 {time_diff:.3f} 秒后发送下一个包...")
time.sleep(time_diff)
self.last_packet_time = current_time
if not self.send_packet(packet, packet_count):
print("发送数据包失败，退出")
return
@@ -244,6 +262,10 @@ class PacketReplayer:
print(f"总共处理了 {packet_count} 个数据包")
print(f"成功发送了 {self.total_packets_sent} 个数据包")
print(f"总共发送了 {self.total_bytes_sent} 字节数据")
if self.first_packet_time is not None:
total_time = float(self.last_packet_time - self.first_packet_time)
print(f"总耗时: {total_time:.3f} 秒")
print(f"平均发送速率: {self.total_bytes_sent / total_time:.2f} 字节/秒")
except Exception as e:
print(f"处理数据包时出错: {e}")