我想将流发布到HTTP服务器(由OWINHost托管),请参阅下面的代码段。 当我使用StringContent传输String时,它工作正常。 但是,如果我想使用StreamContent传输MemoryStream,则服务器端收到的流为空(我通过在客户端对其进行反序列化以进行测试来验证MemoryStream是否正确)。 我做错了什么?
客户端:
...
var request = new HttpRequestMessage(HttpMethod.Post, Configuration.ServiceBaseAddress);
// this works fine!
//request.Content = new StringContent("This is a test!!");
request.Content = new StreamContent(stream);
request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
HttpResponseMessage response = await client.SendAsync(request);
...
服务器端:
public class Startup {
public void Configuration(IAppBuilder app) {
app.Run(async context =>
{
var stream = new MemoryStream();
await context.Request.Body.CopyToAsync(stream);
stream.Seek(0, SeekOrigin.Begin);
// this works fine when I send StringContent
//StreamReader reader = new StreamReader(stream);
//String str = reader.ReadToEnd();
// when I send StreamContent the stream object is empty
IFormatter formatter = new BinaryFormatter();
ServiceRequest requestTest = (ServiceRequest)formatter.Deserialize(stream);
context.Response.ContentType = "text/plain";
await context.Response.WriteAsync("Hello World!");
});
}
}
答案 0 :(得分:5)
我忘了包括:
stream.Seek(0, SeekOrigin.Begin);
在客户端。