2.3.2

• initialize WSclient_t better
• add WebSocketsVersion.h
• print version on begin in debug

2.3.1

• Support for Socket.IO 3 added
• Support for ESP8266 Webserver Hook added
• Improved BearSSL support (ESP8266)
• Fix for empty extraHeaders (#577)

2.3.0

• native BareSSL support for ESP8266 (may brakes existing code)
• fix Async does not compile (#454)
• remove build warnings
• handle ESP32 sha.h changes (#525 )
• handle when loop is called before begin (#541)
• Improved examples
• ws server add clientIsConnected (#563)
• add HTTP header response timeout (#565)
• better data flow stale handling (#566)

2.2.0

• fix build warnings
• rework yield handling for ESP32 and ESP8266
• allow to send socketIO ACK and other message types
• Increased TCP timeout (see #500)
• fix readCb error handling (see #470)
• Initialize _reconnectInterval in constructor (see #521)

Socket.IO 2.0

• add support for Socket.IO 2.0
• feature support ESP32 ETH.h #443
• feature heartbeat functions
• fix #447 (support ESP8266 Arduino SDK 2.4)
• fix #445 #446 ESP32 connect timeout
• fix #434 #428 (support ESP8266 Arduino SDK TLS API changes)
• fix security and RFC #208 #430
• add clang-format

2.1.1

• adapt to ESP32 changes (#319, #343)
• call end for ESP8266_ASYNC TCP Server
• fix #146 HTTP Header handler
• add connectedClients see #242
• allow usage of IPAddress #230
• add close #322
• Allow custom WEBSOCKETS_SERVER_CLIENT_MAX definition

2.1.0

• #279 ESP32 support
• #244 zero _clients struct
• #243 add virtual to destructor
• #240 Add example for plain STOMP connection
• improved travis build tests

2.0.9

• workaround windows gcc Template issue (#228, #229)

2.0.8

• improve handling of writing massive amount of data
• add setReconnectInterval to the client

2.0.7

• travis build tests
• support for fragmentation / continuation opcode Receive
• SocketIO over SSL
• Improved memory usage
• add missing include for ESP with W5100 #177
• Improved LED examples #178
• fix #176 send 401 Header on empty auth
• fix NULL ptr when server abort the connection #207
• SockJS+Stomp example