HttpClientResponseHeaders
using System.ClientModel.Internal;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Runtime.CompilerServices;
namespace System.ClientModel.Primitives
{
[System.Runtime.CompilerServices.NullableContext(1)]
[System.Runtime.CompilerServices.Nullable(0)]
internal class HttpClientResponseHeaders : PipelineResponseHeaders
{
private readonly HttpResponseMessage _httpResponse;
private readonly HttpContent _httpResponseContent;
public HttpClientResponseHeaders(HttpResponseMessage response, HttpContent responseContent)
{
_httpResponse = response;
_httpResponseContent = responseContent;
}
public override bool TryGetValue(string name, [System.Runtime.CompilerServices.Nullable(2)] out string value)
{
Argument.AssertNotNullOrEmpty(name, "name");
return TryGetHeader(_httpResponse.Headers, _httpResponseContent, name, out value);
}
public override bool TryGetValues(string name, [System.Runtime.CompilerServices.Nullable(new byte[] {
2,
1
})] out IEnumerable<string> values)
{
Argument.AssertNotNullOrEmpty(name, "name");
return TryGetHeader(_httpResponse.Headers, _httpResponseContent, name, out values);
}
[return: System.Runtime.CompilerServices.Nullable(new byte[] {
1,
0,
1,
1
})]
public override IEnumerator<KeyValuePair<string, string>> GetEnumerator()
{
return GetHeadersStringValues(_httpResponse.Headers, _httpResponseContent).GetEnumerator();
}
private static bool TryGetHeader(HttpHeaders headers, [System.Runtime.CompilerServices.Nullable(2)] HttpContent content, string name, [System.Runtime.CompilerServices.Nullable(2)] [System.Diagnostics.CodeAnalysis.NotNullWhen(true)] out string value)
{
if (TryGetHeader(headers, content, name, out IEnumerable<string> values)) {
value = JoinHeaderValues(values);
return true;
}
value = null;
return false;
}
private static bool TryGetHeader(HttpHeaders headers, [System.Runtime.CompilerServices.Nullable(2)] HttpContent content, string name, [System.Runtime.CompilerServices.Nullable(new byte[] {
2,
1
})] [System.Diagnostics.CodeAnalysis.NotNullWhen(true)] out IEnumerable<string> values)
{
if (!headers.TryGetValues(name, out values))
return content?.Headers.TryGetValues(name, out values) ?? false;
return true;
}
[return: System.Runtime.CompilerServices.Nullable(new byte[] {
1,
0,
1,
1
})]
private static IEnumerable<KeyValuePair<string, string>> GetHeadersStringValues(HttpHeaders headers, [System.Runtime.CompilerServices.Nullable(2)] HttpContent content)
{
foreach (KeyValuePair<string, IEnumerable<string>> header in headers) {
yield return new KeyValuePair<string, string>(header.Key, JoinHeaderValues(header.Value));
}
if (content != null) {
foreach (KeyValuePair<string, IEnumerable<string>> header2 in content.Headers) {
yield return new KeyValuePair<string, string>(header2.Key, JoinHeaderValues(header2.Value));
}
}
}
private static string JoinHeaderValues(IEnumerable<string> values)
{
return string.Join(",", values);
}
}
}