/// <summary>
/// Initiates the connection to the STOMP server.
/// </summary>
/// <param name="host"></param>
/// <param name="login"></param>
/// <param name="passcode"></param>
/// <param name="headers"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
internal async Task ConnectAsync(string host, string login, string passcode, IEnumerable <KeyValuePair <string, string> > headers, CancellationToken cancellationToken)
{
headers ??= Enumerable.Empty <KeyValuePair <string, string> >();
if (GetStompVersionHeader() is string acceptVersion)
{
headers = headers.Prepend(new KeyValuePair <string, string>("accept-version", acceptVersion));
}
if (host != null)
{
headers = headers.Prepend(new KeyValuePair <string, string>("host", host));
}
logger.LogInformation("Initating STOMP connection: Host={Host}", host);
var result = await SendFrameAndWaitAsync(StompCommand.Connect, headers, null, frame => frame.Command == StompCommand.Connected || frame.Command == StompCommand.Error, cancellationToken);
if (result.Command == StompCommand.Error)
{
throw new StompException($"ERROR waiting for CONNECTED response: {Encoding.UTF8.GetString(result.Body.Span)}");
}
if (result.Command != StompCommand.Connected)
{
throw new StompException("Did not receive CONNECTED response.");
}
version = result.GetHeaderValue("version") is string _version?ParseStompVersionHeader(_version) : StompVersion.Stomp_1_0;
session = result.GetHeaderValue("session");
logger.LogInformation("STOMP connection established: Version={Version} Session={Session}", StompVersionHeaderToString(version), session);
}
/// <summary>
/// Converts a <see cref="StompVersion"/> into a string.
/// </summary>
/// <param name="version"></param>
/// <returns></returns>
string StompVersionHeaderToString(StompVersion version) => version switch
{