GNU Smalltalk Library Reference: Sockets.AbstractSocket-stream protocol

atEnd: By default, answer whether the connection is still open.
next: Read another character from the socket, failing if the connection is dead.
next: n putAll: aCollection startingAt: pos: Write ‘char’ to the socket, failing if the connection is dead. The SIGPIPE signal is automatically caught and ignored by the system.
nextPut: char: Write ‘char’ to the socket, failing if the connection is dead. The SIGPIPE signal is automatically caught and ignored by the system.