Add UnifiedMessage support for NetworkUDPPerformanceMessage in iperf3

[Copilot]

• Understand the codebase and existing patterns for UnifiedMessage
• Add imports for send_unified_perf_message, MetricRelativity, and TransportProtocol to iperf3.py
• Implement send_iperf_udp_unified_perf_messages method in iperf3.py (similar to ntttcp)
• Update create_iperf_udp_performance_message to call the new unified message method
• Verify the changes with syntax check and compilation
• Validate that the implementation matches the pattern from ntttcp.py
• Add connections_num as a separate Parameter type unified message
• Mark send_buffer_size as Parameter type unified message
• Consolidate all parameters and metrics into single array for cleaner code

Summary:
Added UnifiedMessage support for NetworkUDPPerformanceMessage in iperf3.py. The implementation:

• Sends test parameters (connections_num, send_buffer_size) as Parameter type unified messages
• Sends performance metrics (tx_throughput, rx_throughput, data_loss) with appropriate relativity
• Uses clean metric names without any embedded context
• Consolidates all metrics into a single array for cleaner, more maintainable code
• Clearly distinguishes parameters from performance metrics via metric_description="Parameter"

Implementation approach:

• All parameters and metrics are defined in a single array
• Parameters are marked with description="Parameter"
• All metrics are sent together in a single loop
• Clean separation between parameter definitions and performance metric definitions via comments

Original prompt

Add UnifiedMessage for all NetworkUDPPerformanceMessage like other examples

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[squirrelsc]

@copilot fix check errors.

[Copilot]

@copilot fix check errors.

Fixed line length violations by breaking long description strings across multiple lines. All lines in the modified code are now within the 88 character limit. Commit: 9ee7ea2

[squirrelsc]

Fix check errors and comments. @copilot

[Copilot]

Fix check errors and comments. @copilot

Fixed check errors and addressed comments. Reverted previous commit and added connections_num as a Parameter type unified message. All lines are within 88 character limit. Commit: 40037b8

[squirrelsc]

Its type should be Parameter? @copilot

[Copilot]

Correct! Changed send_buffer_size to Parameter type. Now both connections_num and send_buffer_size are sent as separate Parameter type unified messages (marked via metric_description="Parameter"), while tx_throughput, rx_throughput, and data_loss are sent as performance metrics. Commit: e6fb706

[squirrelsc]

Add it in the metrics array and send together. @copilot

[Copilot]

Added parameters to the metrics array. Now all parameters (connections_num, send_buffer_size) and performance metrics (tx_throughput, rx_throughput, data_loss) are in a single array and sent together in one loop. Commit: 5e58cd1