snappi is crashing while doing get config, if config contains TCP header

[biplamal]

E TypeError: property value shall be of type <class 'int'> at <class 'snappi.snappi.PatternFlowTcpSeqNum'>
E got 0 of type <class 'str'> , expected min 0, expected max 4294967295

[biplamal]

import snappi
import pytest


@pytest.mark.sanity
def test_grpc_http_config(settings):
    """
    - config without port & with flow
    Validate,
    - should fail at set_config
    """
    size, fixed_packets = 1518, 50000

    http_api = snappi.api(location=settings.http_server)

    grpc_api = snappi.api(location=settings.grpc_server,
                          transport=snappi.Transport.GRPC)

    config = new_config(http_api, settings, size, fixed_packets)

    # gRPC setConfig
    res_grpc = grpc_api.set_config(config)
    if len(res_grpc.warnings) > 0:
        print("Warnings: {}".format(res_grpc.warnings))

    res_grpc = grpc_api.get_config()

    # HTTP setConfig
    res_http = http_api.set_config(config)
    if len(res_http.warnings) > 0:
        print("Warnings: {}".format(res_http.warnings))

    res_http = http_api.get_config()

    assert res_http.serialize(
        encoding='dict') == res_grpc.serialize(encoding='dict')


def new_config(api, settings, size, fixed_packets):
    config = api.config()
    tx = config.ports.port(name='tx', location=settings.ports[0])
    ly = config.layer1.layer1(name='l1')[0]

    ly.speed = settings.speed
    ly.promiscuous = settings.promiscuous
    ly.mtu = settings.mtu
    ly.port_names = [tx[0].name]

    flw = config.flows.flow(name='flw')[-1]

    flw.size.fixed = size
    flw.rate.percentage = settings.line_rate
    flw.duration.fixed_packets.packets = fixed_packets
    flw.tx_rx.port.tx_name = tx[0].name

    flw.packet.ethernet().ipv4().tcp()

    return config

[biplamal]

script to reproduce the issue

[Rangababu-R]

@biplamal
Its issue with models. TCP.Seq.Num is being set to integer type and format is not set to int64. Why does the server returning in string? was it made to int64 type?

[shramroy]

Observation is - Whichever field having
format: integer length: 32
this format causing this issue.
The affected fields are TCP seq_num, ack_num, gtpv1 teid & gtpv2 teid.

[apratimmukherjee]

Its fixed by open-traffic-generator/openapiart#362 as per linked issue so closing this.