/// <summary>
/// Sendet einen PUT Request an die PROFFIX REST API asynchron.
/// </summary>
/// <param name="path">Der Pfad zum Endpunkt der PROFFIX REST API.</param>
/// <param name="body">Der Body, der gesendet werden soll.</param>
/// <param name="queryString">Benötigte URL-Parameter.</param>
/// <returns>Gibt einen Task mit der Response der PROFFIX REST API zurück.</returns>
public async Task <PxRestApiResponse> PutAsync(string path, object body = null, string queryString = null)
{
var request = new PxRestApiRequest()
{
Method = HttpMethod.Put.Method,
Path = path,
QueryString = queryString
};
request.SetBody(body);
return(await SendAsync(request));
}
/// <summary>
/// Sendet einen beliebigen Request an die PROFFIX REST API asynchron.
/// </summary>
/// <param name="request">Der Request mit allen benötigten Informationen.</param>
/// <param name="addKey">Gibt an, ob der Key-URL-Parameter dem Request hinzugefügt werden soll.</param>
/// <returns>Gibt einen Task mit der Response der PROFFIX REST API zurück.</returns>
public async Task <PxRestApiResponse> SendAsync(PxRestApiRequest request, bool addKey = false)
{
HttpContext context = this.httpContextAccessor.HttpContext;
string sessionId = context.Request.Headers[PxSessionIdHeader];
string publicUrl = context.Request.Headers[PxPublicUrlHeader];
string[] addresses = context.Request.Headers[PxAddressHeader];
string key = addKey ? (string)context.Request.Headers[PxKeyHeader] : null;
List <string> baseUrls = new List <string>(2);
const string scheme = "http://";
string httpAddress = addresses?.FirstOrDefault(address => address?.StartsWith(scheme) ?? false);
if (httpAddress != null)
{
string host = this.GetHostFromAddress(httpAddress);
if (host != null)
{
string afterHost = httpAddress.Substring(scheme.Length + host.Length);
if (host == "+" ||
host == "*" || (
IPAddress.TryParse(host, out IPAddress address) && (
address.Equals(IPAddress.Any) ||
address.Equals(IPAddress.IPv6Any))))
{
host = "localhost";
}
baseUrls.Add($"{scheme}{host}{afterHost}");
}
}
if (!string.IsNullOrWhiteSpace(publicUrl))
{
baseUrls.Add(publicUrl);
}
foreach (string baseUrl in baseUrls)
{
using (HttpRequestMessage requestMessage = await CreateRequestAsync(baseUrl, sessionId, key, request)) {
try {
using (HttpResponseMessage responseMessage = await this.httpClient.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead, context.RequestAborted)) {
return(await CreateResponseAsync(responseMessage));
}
}
catch (HttpRequestException) { }
catch (OperationCanceledException) {
if (context.RequestAborted.IsCancellationRequested)
{
throw;
}
}
}
}
throw new InvalidOperationException("Die Anfrage konnte nicht an die PROFFIX REST API gesendet werden, da keine gültige Basis-URL verfügbar ist.");
}
private async Task <HttpRequestMessage> CreateRequestAsync(string baseUrl, string sessionId, string key, PxRestApiRequest request)
{
HttpRequestMessage requestMessage = new HttpRequestMessage();
requestMessage.Method = new HttpMethod(request.Method);
requestMessage.Version = new Version(request.Protocol ?? "1.1");
requestMessage.Headers.TryAddWithoutValidation(PxSessionIdHeader, sessionId);
if (request.Body != null)
{
MemoryStream body = new MemoryStream();
using (StreamWriter writer = new StreamWriter(body, this.utf8WithoutBom, 1024, true)) {
JsonSerializer jsonSerializer = new JsonSerializer();
jsonSerializer.Serialize(writer, request.Body);
}
body.Position = 0;
requestMessage.Content = new StreamContent(body);
}
if (request.Headers != null)
{
foreach (KeyValuePair <string, string[]> header in request.Headers)
{
if (!requestMessage.Headers.TryAddWithoutValidation(header.Key, header.Value))
{
requestMessage.Content?.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
}
}
if (request.Body != null)
{
requestMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
}
string uri = baseUrl.EndsWith("/") ? baseUrl.TrimEnd('/') : baseUrl;
string path = request.Path;
if (!string.IsNullOrWhiteSpace(path))
{
uri += path.StartsWith("/") ? path : "/" + path;
}
string queryString = request.QueryString;
if (!string.IsNullOrWhiteSpace(key))
{
if (string.IsNullOrWhiteSpace(queryString))
{
queryString = $"?key={key}";
}
else
{
queryString += $"&key={key}";
}
}
if (!string.IsNullOrWhiteSpace(queryString))
{
uri += queryString.StartsWith("?") ? queryString : "?" + queryString;
}
requestMessage.RequestUri = new Uri(uri);
requestMessage.Headers.Host = requestMessage.RequestUri.Host;
return(await Task.FromResult(requestMessage));
}
