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Split socket/SSLSocket nonblock methods into exception: overloads #2963

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Split socket/SSLSocket nonblock methods into exception: overloads #2963

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1b92ca7
Split socket nonblock methods into exception: overloads
zonuexe May 21, 2026
b89c921
Split SSLSocket sysread_nonblock/syswrite_nonblock into exception: ov…
zonuexe May 21, 2026
02334e0
Refine nonblock receive/write return types per review
zonuexe May 28, 2026
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6 changes: 4 additions & 2 deletions stdlib/openssl/0/openssl.rbs
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Original file line number Diff line number Diff line change
Expand Up @@ -9332,7 +9332,8 @@ module OpenSSL
# Reads *length* bytes from the SSL connection. If a pre-allocated *buffer* is
# provided the data will be written into it.
#
def sysread_nonblock: (*untyped) -> untyped
def sysread_nonblock: (Integer length, ?String buffer, ?exception: true) -> String
| (Integer length, ?String buffer, exception: false) -> (String | :wait_readable | :wait_writable | nil)
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@soutaro soutaro May 30, 2026

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Suggested change
| (Integer length, ?String buffer, exception: false) -> (String | :wait_readable | :wait_writable | nil)
| (Integer length, ?String buffer, exception: boolish) -> (String | :wait_readable | :wait_writable | nil)

exception: keyword parameter must be wider than false, because the precise type information may be lost: exception = rand() > 0.5 #: bool.

I found exception: accepts any object (..., exception: "true"), but it's really complicated to support these cases. So, the assumption, programmers will write the exception: true, would make sense.


# <!--
# rdoc-file=ext/openssl/ossl_ssl.c
Expand All @@ -9341,7 +9342,8 @@ module OpenSSL
# Writes *string* to the SSL connection in a non-blocking manner. Raises an
# SSLError if writing would block.
#
def syswrite_nonblock: (*untyped) -> untyped
def syswrite_nonblock: (string, ?exception: true) -> Integer
| (string, exception: false) -> (Integer | :wait_readable | :wait_writable)

# <!--
# rdoc-file=ext/openssl/lib/openssl/ssl.rb
Expand Down
9 changes: 6 additions & 3 deletions stdlib/socket/0/basic_socket.rbs
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Expand Up @@ -330,7 +330,8 @@ class BasicSocket < IO
# ### See
# * Socket#recvfrom
#
def recv_nonblock: (Integer maxlen, ?Integer flags, ?String buf, ?exception: boolish) -> (String | :wait_readable)
def recv_nonblock: (Integer maxlen, ?Integer flags, ?String buf, ?exception: true) -> String?
| (Integer maxlen, ?Integer flags, ?String buf, exception: false) -> (String | :wait_readable | nil)

# <!--
# rdoc-file=ext/socket/lib/socket.rb
Expand Down Expand Up @@ -401,7 +402,8 @@ class BasicSocket < IO
# recvmsg_nonblock should not raise an IO::WaitReadable exception, but return
# the symbol <code>:wait_readable</code> instead.
#
def recvmsg_nonblock: (?Integer dlen, ?Integer flags, ?Integer clen, ?exception: boolish, ?scm_rights: boolish) -> ([ String, Addrinfo, Integer?, Array[Socket::AncillaryData] ] | :wait_readable)
def recvmsg_nonblock: (?Integer dlen, ?Integer flags, ?Integer clen, ?exception: true, ?scm_rights: boolish) -> [ String, Addrinfo, Integer?, Array[Socket::AncillaryData] ]?
| (?Integer dlen, ?Integer flags, ?Integer clen, exception: false, ?scm_rights: boolish) -> ([ String, Addrinfo, Integer?, Array[Socket::AncillaryData] ] | :wait_readable | nil)

# <!--
# rdoc-file=ext/socket/basicsocket.c
Expand Down Expand Up @@ -489,7 +491,8 @@ class BasicSocket < IO
# sendmsg_nonblock should not raise an IO::WaitWritable exception, but return
# the symbol <code>:wait_writable</code> instead.
#
def sendmsg_nonblock: (String mesg, ?Integer flags, ?Addrinfo | String dest_sockaddr, *Socket::AncillaryData controls, ?exception: boolish) -> (Integer | :wait_writable)
def sendmsg_nonblock: (String mesg, ?Integer flags, ?Addrinfo | String dest_sockaddr, *Socket::AncillaryData controls, ?exception: true) -> Integer
| (String mesg, ?Integer flags, ?Addrinfo | String dest_sockaddr, *Socket::AncillaryData controls, exception: false) -> (Integer | :wait_writable)

# <!--
# rdoc-file=ext/socket/basicsocket.c
Expand Down
9 changes: 6 additions & 3 deletions stdlib/socket/0/socket.rbs
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Expand Up @@ -851,7 +851,8 @@ class Socket < BasicSocket
# ### See
# * Socket#accept
#
def accept_nonblock: (?exception: boolish) -> ([ Socket, Addrinfo ] | :wait_readable)
def accept_nonblock: (?exception: true) -> [ Socket, Addrinfo ]
| (exception: false) -> ([ Socket, Addrinfo ] | :wait_readable)

# <!--
# rdoc-file=ext/socket/socket.c
Expand Down Expand Up @@ -1105,7 +1106,8 @@ class Socket < BasicSocket
# ### See
# * Socket#connect
#
def connect_nonblock: (untyped addr, ?exception: untyped) -> (Integer | :wait_writable)
def connect_nonblock: (untyped addr, ?exception: true) -> Integer
| (untyped addr, exception: false) -> (Integer | :wait_writable)

# <!--
# rdoc-file=ext/socket/lib/socket.rb
Expand Down Expand Up @@ -1363,7 +1365,8 @@ class Socket < BasicSocket
# ### See
# * Socket#recvfrom
#
def recvfrom_nonblock: (Integer maxlen, ?Integer flags, ?untyped outbuf, ?exception: boolish) -> ([ String, Addrinfo ] | :wait_readable)
def recvfrom_nonblock: (Integer maxlen, ?Integer flags, ?untyped outbuf, ?exception: true) -> [ String, Addrinfo ]?
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@soutaro soutaro May 30, 2026

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Claude Code told me that nil won't return from this method. Is it correct?

| (Integer maxlen, ?Integer flags, ?untyped outbuf, exception: false) -> ([ String, Addrinfo ] | :wait_readable | nil)

# <!--
# rdoc-file=ext/socket/socket.c
Expand Down
3 changes: 2 additions & 1 deletion stdlib/socket/0/tcp_server.rbs
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Expand Up @@ -78,7 +78,8 @@ class TCPServer < TCPSocket
# * TCPServer#accept
# * Socket#accept
#
def accept_nonblock: (?exception: boolish) -> (TCPSocket | :wait_readable)
def accept_nonblock: (?exception: true) -> TCPSocket
| (exception: false) -> (TCPSocket | :wait_readable)

# <!--
# rdoc-file=ext/socket/tcpserver.c
Expand Down
3 changes: 2 additions & 1 deletion stdlib/socket/0/udp_socket.rbs
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Expand Up @@ -86,7 +86,8 @@ class UDPSocket < IPSocket
# ### See
# * Socket#recvfrom
#
def recvfrom_nonblock: (Integer len, ?Integer flag, ?String outbuf, ?exception: boolish) -> [ String, [ String, Integer, String, String ] ]
def recvfrom_nonblock: (Integer len, ?Integer flag, ?String outbuf, ?exception: true) -> [ String, [ String, Integer, String, String ] ]?
| (Integer len, ?Integer flag, ?String outbuf, exception: false) -> ([ String, [ String, Integer, String, String ] ] | :wait_readable | nil)

# <!--
# rdoc-file=ext/socket/udpsocket.c
Expand Down
3 changes: 2 additions & 1 deletion stdlib/socket/0/unix_server.rbs
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Expand Up @@ -56,7 +56,8 @@ class UNIXServer < UNIXSocket
# * UNIXServer#accept
# * Socket#accept
#
def accept_nonblock: (?exception: boolish) -> (UNIXSocket | :wait_readable)
def accept_nonblock: (?exception: true) -> UNIXSocket
| (exception: false) -> (UNIXSocket | :wait_readable)

# <!--
# rdoc-file=ext/socket/unixserver.c
Expand Down
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