Win10 Edge browser adds support for TCP Fast Open technology to improve performance

Computer store news: Microsoft announced today that the Edge browser opens TCP Fast Open support in the Windows 10 first anniversary update system. This function can be used in the Edge browser. About:flags settings page, system version needs to be 14352 and above or EdgeHTML 14.14361 version and above. With TCP Fast Open, the Edge browser will be more secure and performance-enhancing.

TCP Fast Open can enable Edge browser to reduce the round-trip time of network exchange encrypted data. TFO is a new feature introduced in Linux kernel version 3.6. The relevant standard is proposed by Google when the client connects to the server through TCP. Carrying data in SYN packets will increase the efficiency of TCP (4%-41%). The premise is that in this SYN message, there is a cookie field generated by the server on behalf of the client in the previous TCP connection. During the first TCP connection creation process between the client and the server, it is the usual three-way handshake process, but the server will generate a cookie as the authentication information of the subsequent TCP connection, which avoids malicious attacks. Microsoft will add 0-RTT experience support to the Edge browser, so that encrypted data is always sent along with TLS Client Hello and previous storage server information. The Edge browser supports HTTP 2.0, TLS 1.3 and CP Fast Open, TLS False Start, and Microsoft will support the TLS 1.3 feature released later this summer.