csharpdeeb25a2 | 1 | using System.Net.Http; |
| 2 | using System.Runtime.CompilerServices; |
| 3 | using System.Text; |
| 4 | using System.Text.Json; |
| 5 | |
| 6 | namespace CascadeIDE.Features.Intercom.Transport; |
| 7 | |
| 8 | internal static class IntercomSseParser |
| 9 | { |
| 10 | public static async IAsyncEnumerable<IntercomTransportEventEnvelopeDto> ReadEnvelopesAsync( |
| 11 | HttpResponseMessage response, |
| 12 | [EnumeratorCancellation] CancellationToken ct) |
| 13 | { |
| 14 | await using var stream = await response.Content.ReadAsStreamAsync(ct).ConfigureAwait(false); |
| 15 | using var reader = new StreamReader(stream, Encoding.UTF8, detectEncodingFromByteOrderMarks: true); |
| 16 | |
| 17 | var dataLines = new List<string>(); |
| 18 | while (true) |
| 19 | { |
| 20 | ct.ThrowIfCancellationRequested(); |
| 21 | var line = await reader.ReadLineAsync(ct).ConfigureAwait(false); |
| 22 | if (line is null) |
| 23 | break; |
| 24 | |
| 25 | if (line.Length == 0) |
| 26 | { |
| 27 | if (dataLines.Count == 0) |
| 28 | continue; |
| 29 | |
| 30 | var json = string.Join('\n', dataLines); |
| 31 | dataLines.Clear(); |
| 32 | IntercomTransportEventEnvelopeDto? envelope; |
| 33 | try |
| 34 | { |
| 35 | envelope = JsonSerializer.Deserialize<IntercomTransportEventEnvelopeDto>(json, IntercomTransportJson.Web); |
| 36 | } |
| 37 | catch (JsonException) |
| 38 | { |
| 39 | continue; |
| 40 | } |
| 41 | |
| 42 | if (envelope is not null) |
| 43 | yield return envelope; |
| 44 | continue; |
| 45 | } |
| 46 | |
| 47 | if (line.StartsWith("data:", StringComparison.Ordinal)) |
| 48 | dataLines.Add(line["data:".Length..].TrimStart()); |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | |
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