Merge branch 'unix-sockets' of https://github.com/girvo/Nim into girvo-unix-sockets

lib/pure/net.nim

@@ -68,6 +68,7 @@
 {.deadCodeElim: on.}
 import nativesockets, os, strutils, parseutils, times
 export Port, `$`, `==`
+export Domain, SockType, Protocol
 
 const useWinVersion = defined(Windows) or defined(nimdoc)
 const defineSsl = defined(ssl) or defined(nimdoc)
@@ -605,9 +606,32 @@ proc setSockOpt*(socket: Socket, opt: SOBool, value: bool, level = SOL_SOCKET) {
   var valuei = cint(if value: 1 else: 0)
   setSockOptInt(socket.fd, cint(level), toCInt(opt), valuei)
 
-when defineSsl:
+when defined(posix) or defined(nimdoc):
+  proc makeUnixAddr(path: string): Sockaddr_un =
+    result.sun_family = AF_UNIX.toInt
+    if path.len >= Sockaddr_un_path_length:
+      raise newException(ValueError, "socket path too long")
+    copyMem(addr result.sun_path, path.cstring, path.len + 1)
+
+  proc connectUnix*(socket: Socket, path: string) =
+    ## Connects to Unix socket on `path`.
+    ## This only works on Unix-style systems: Mac OS X, BSD and Linux
+    var socketAddr = makeUnixAddr(path)
+    if socket.fd.connect(cast[ptr SockAddr](addr socketAddr),
+                      sizeof(socketAddr).Socklen) != 0'i32:
+      raiseOSError(osLastError())
+
+  proc bindUnix*(socket: Socket, path: string) =
+    ## Binds Unix socket to `path`.
+    ## This only works on Unix-style systems: Mac OS X, BSD and Linux
+    var socketAddr = makeUnixAddr(path)
+    if socket.fd.bindAddr(cast[ptr SockAddr](addr socketAddr),
+                          sizeof(socketAddr).Socklen) != 0'i32:
+      raiseOSError(osLastError())
+
+when defined(ssl):
   proc handshake*(socket: Socket): bool
-      {.tags: [ReadIOEffect, WriteIOEffect], deprecated.} =
+    {.tags: [ReadIOEffect, WriteIOEffect], deprecated.} =
     ## This proc needs to be called on a socket after it connects. This is
     ## only applicable when using ``connectAsync``.
     ## This proc performs the SSL handshake.