/// <summary>
/// <para>Events:</para>
/// <para>@emits transportclose</para>
/// <para>@emits dataproducerclose</para>
/// <para>@emits message - (message: Buffer, ppid: number)</para>
/// <para>@emits sctpsendbufferfull</para>
/// <para>@emits bufferedamountlow - (bufferedAmount: number)</para>
/// <para>@emits @close</para>
/// <para>@emits @dataproducerclose</para>
/// <para>Observer events:</para>
/// <para>@emits close</para>
/// </summary>
/// <param name="loggerFactory"></param>
/// <param name="dataConsumerInternalData"></param>
/// <param name="sctpStreamParameters"></param>
/// <param name="label"></param>
/// <param name="protocol"></param>
/// <param name="channel"></param>
/// <param name="payloadChannel"></param>
/// <param name="appData"></param>
public DataConsumer(ILoggerFactory loggerFactory,
DataConsumerInternalData dataConsumerInternalData,
SctpStreamParameters sctpStreamParameters,
string label,
string protocol,
Channel channel,
PayloadChannel payloadChannel,
Dictionary <string, object>?appData
)
{
_logger = loggerFactory.CreateLogger <DataConsumer>();
// Internal
_internal = dataConsumerInternalData;
// Data
SctpStreamParameters = sctpStreamParameters;
Label = label;
Protocol = protocol;
_channel = channel;
_payloadChannel = payloadChannel;
AppData = appData;
HandleWorkerNotifications();
}
/// <summary>
/// Validates SctpStreamParameters. It may modify given data by adding missing
/// fields with default values.
/// It throws if invalid.
/// </summary>
public static void ValidateSctpStreamParameters(SctpStreamParameters parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
// streamId is mandatory.
// 在 Node.js 实现中，判断了 streamId 的数据类型。在强类型语言中不需要。
// ordered is optional.
var orderedGiven = true;
if (!parameters.Ordered.HasValue)
{
orderedGiven = false;
parameters.Ordered = true;
}
// maxPacketLifeTime is optional.
// 在 Node.js 实现中，判断了 maxPacketLifeTime 的数据类型。在强类型语言中不需要。
// maxRetransmits is optional.
// 在 Node.js 实现中，判断了 maxRetransmits 的数据类型。在强类型语言中不需要。
if (parameters.MaxPacketLifeTime.HasValue && parameters.MaxRetransmits.HasValue)
{
throw new ArgumentException("cannot provide both maxPacketLifeTime and maxRetransmits");
}
if (orderedGiven &&
parameters.Ordered.Value &&
(parameters.MaxPacketLifeTime.HasValue || parameters.MaxRetransmits.HasValue)
)
{
throw new ArgumentException("cannot be ordered with maxPacketLifeTime or maxRetransmits");
}
else if (!orderedGiven && (parameters.MaxPacketLifeTime.HasValue || parameters.MaxRetransmits.HasValue))
{
parameters.Ordered = false;
}
}