Environment

环境配置 #开发指南

Service的Http协议枚举值

HttpProtocols枚举值	允许的连接协议
Http1	仅限 HTTP/1.1。可以在有或没有 TLS 的情况下使用。
Http2	仅限 HTTP/2。仅当客户端支持先验知识模式时，才可以在没有 TLS 的情况下使用。
Http1AndHttp2	HTTP/1.1 和 HTTP/2。HTTP/2 要求客户端在 TLS应用层协议协商 (ALPN)握手中选择 HTTP/2；否则，连接默认为 HTTP/1.1。

协议协商说明： TLS 不仅仅用于保护通信。当端点支持多种协议时，TLS应用层协议协商 (ALPN)握手用于协商客户端和服务器之间的连接协议。此协商确定连接是使用 HTTP/1.1 还是 HTTP/2。 如果 HTTP/2 端点配置为没有 TLS，则端点的ListenOptions.Protocols必须设置为HttpProtocols.Http2。HttpProtocols.Http1AndHttp2如果没有 TLS，则无法使用具有多个协议（例如 ）的端点，因为没有协商。与不安全端点的所有连接默认为 HTTP/1.1，并且 gRPC 调用失败。

各部件对不同协议枚举值的的支持

Service	Http1	Http2	Http1AndHttp2
Cli (grpc)	issue1	PASS	issue1
Cli (grpc ssl)	issue2	issue3	issue3
Blazor VS2022 (http)	PASS	PASS	PASS
Blazor VS2022 (https)	PASS	PASS	PASS
Blazor WASM (http)	PASS	PASS	PASS
Blazor WASM (https)	PASS	PASS	PASS
Unity (grpc )	PASS	issue5	PASS
Unity (grpc ssl)	PASS	issue4	PASS

Unity grpc 使用的是 HTTP/1.1

• issue1: Invalid content received on connection. Possible incorrect HTTP version detected. Expected HTTP/1.1 but received HTTP/2. Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Unrecognized HTTP version: 'HTTP/2.0'

• issue2: Failed to authenticate HTTPS connection. System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception.

• issue3: Failed to authenticate HTTPS connection. System.IO.IOException: Received an unexpected EOF or 0 bytes from the transport stream.

• issue4: HTTP/2 over TLS was not negotiated on an HTTP/2-only endpoint.

• issue5: Invalid content received on connection. Possible incorrect HTTP version detected. Expected HTTP/2 but received HTTP/1.1.