1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S --
9 -- Copyright (C) 2001-2008, AdaCore --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with Ada.Streams; use Ada.Streams;
35 with Ada.Exceptions; use Ada.Exceptions;
36 with Ada.Unchecked_Conversion;
38 with Interfaces.C.Strings;
39 with GNAT.Sockets.Constants;
40 with GNAT.Sockets.Thin; use GNAT.Sockets.Thin;
41 with GNAT.Sockets.Thin.Task_Safe_NetDB; use GNAT.Sockets.Thin.Task_Safe_NetDB;
43 with GNAT.Sockets.Linker_Options;
44 pragma Warnings (Off, GNAT.Sockets.Linker_Options);
45 -- Need to include pragma Linker_Options which is platform dependent
47 with System; use System;
49 package body GNAT.Sockets is
53 Finalized : Boolean := False;
54 Initialized : Boolean := False;
56 ENOERROR : constant := 0;
58 Netdb_Buffer_Size : constant := Constants.Need_Netdb_Buffer * 1024;
59 -- The network database functions gethostbyname, gethostbyaddr,
60 -- getservbyname and getservbyport can either be guaranteed task safe by
61 -- the operating system, or else return data through a user-provided buffer
62 -- to ensure concurrent uses do not interfere.
64 -- Correspondence tables
66 Families : constant array (Family_Type) of C.int :=
67 (Family_Inet => Constants.AF_INET,
68 Family_Inet6 => Constants.AF_INET6);
70 Levels : constant array (Level_Type) of C.int :=
71 (Socket_Level => Constants.SOL_SOCKET,
72 IP_Protocol_For_IP_Level => Constants.IPPROTO_IP,
73 IP_Protocol_For_UDP_Level => Constants.IPPROTO_UDP,
74 IP_Protocol_For_TCP_Level => Constants.IPPROTO_TCP);
76 Modes : constant array (Mode_Type) of C.int :=
77 (Socket_Stream => Constants.SOCK_STREAM,
78 Socket_Datagram => Constants.SOCK_DGRAM);
80 Shutmodes : constant array (Shutmode_Type) of C.int :=
81 (Shut_Read => Constants.SHUT_RD,
82 Shut_Write => Constants.SHUT_WR,
83 Shut_Read_Write => Constants.SHUT_RDWR);
85 Requests : constant array (Request_Name) of C.int :=
86 (Non_Blocking_IO => Constants.FIONBIO,
87 N_Bytes_To_Read => Constants.FIONREAD);
89 Options : constant array (Option_Name) of C.int :=
90 (Keep_Alive => Constants.SO_KEEPALIVE,
91 Reuse_Address => Constants.SO_REUSEADDR,
92 Broadcast => Constants.SO_BROADCAST,
93 Send_Buffer => Constants.SO_SNDBUF,
94 Receive_Buffer => Constants.SO_RCVBUF,
95 Linger => Constants.SO_LINGER,
96 Error => Constants.SO_ERROR,
97 No_Delay => Constants.TCP_NODELAY,
98 Add_Membership => Constants.IP_ADD_MEMBERSHIP,
99 Drop_Membership => Constants.IP_DROP_MEMBERSHIP,
100 Multicast_If => Constants.IP_MULTICAST_IF,
101 Multicast_TTL => Constants.IP_MULTICAST_TTL,
102 Multicast_Loop => Constants.IP_MULTICAST_LOOP,
103 Receive_Packet_Info => Constants.IP_PKTINFO,
104 Send_Timeout => Constants.SO_SNDTIMEO,
105 Receive_Timeout => Constants.SO_RCVTIMEO);
106 -- ??? Note: for OpenSolaris, Receive_Packet_Info should be IP_RECVPKTINFO,
107 -- but for Linux compatibility this constant is the same as IP_PKTINFO.
109 Flags : constant array (0 .. 3) of C.int :=
110 (0 => Constants.MSG_OOB, -- Process_Out_Of_Band_Data
111 1 => Constants.MSG_PEEK, -- Peek_At_Incoming_Data
112 2 => Constants.MSG_WAITALL, -- Wait_For_A_Full_Reception
113 3 => Constants.MSG_EOR); -- Send_End_Of_Record
115 Socket_Error_Id : constant Exception_Id := Socket_Error'Identity;
116 Host_Error_Id : constant Exception_Id := Host_Error'Identity;
118 Hex_To_Char : constant String (1 .. 16) := "0123456789ABCDEF";
119 -- Use to print in hexadecimal format
121 function To_In_Addr is new Ada.Unchecked_Conversion (C.int, In_Addr);
122 function To_Int is new Ada.Unchecked_Conversion (In_Addr, C.int);
124 function Err_Code_Image (E : Integer) return String;
125 -- Return the value of E surrounded with brackets
127 -----------------------
128 -- Local subprograms --
129 -----------------------
131 function Resolve_Error
132 (Error_Value : Integer;
133 From_Errno : Boolean := True) return Error_Type;
134 -- Associate an enumeration value (error_type) to en error value (errno).
135 -- From_Errno prevents from mixing h_errno with errno.
137 function To_Name (N : String) return Name_Type;
138 function To_String (HN : Name_Type) return String;
139 -- Conversion functions
141 function To_Int (F : Request_Flag_Type) return C.int;
142 -- Return the int value corresponding to the specified flags combination
144 function Set_Forced_Flags (F : C.int) return C.int;
145 -- Return F with the bits from Constants.MSG_Forced_Flags forced set
147 function Short_To_Network
148 (S : C.unsigned_short) return C.unsigned_short;
149 pragma Inline (Short_To_Network);
150 -- Convert a port number into a network port number
152 function Network_To_Short
153 (S : C.unsigned_short) return C.unsigned_short
154 renames Short_To_Network;
155 -- Symmetric operation
158 (Val : Inet_Addr_VN_Type;
159 Hex : Boolean := False) return String;
160 -- Output an array of inet address components in hex or decimal mode
162 function Is_IP_Address (Name : String) return Boolean;
163 -- Return true when Name is an IP address in standard dot notation
165 function To_In_Addr (Addr : Inet_Addr_Type) return Thin.In_Addr;
166 procedure To_Inet_Addr
168 Result : out Inet_Addr_Type);
169 -- Conversion functions
171 function To_Host_Entry (E : Hostent) return Host_Entry_Type;
172 -- Conversion function
174 function To_Service_Entry (E : Servent) return Service_Entry_Type;
175 -- Conversion function
177 function To_Timeval (Val : Timeval_Duration) return Timeval;
178 -- Separate Val in seconds and microseconds
180 function To_Duration (Val : Timeval) return Timeval_Duration;
181 -- Reconstruct a Duration value from a Timeval record (seconds and
184 procedure Raise_Socket_Error (Error : Integer);
185 -- Raise Socket_Error with an exception message describing the error code
188 procedure Raise_Host_Error (H_Error : Integer);
189 -- Raise Host_Error exception with message describing error code (note
190 -- hstrerror seems to be obsolete) from h_errno.
192 procedure Narrow (Item : in out Socket_Set_Type);
193 -- Update Last as it may be greater than the real last socket
195 -- Types needed for Datagram_Socket_Stream_Type
197 type Datagram_Socket_Stream_Type is new Root_Stream_Type with record
198 Socket : Socket_Type;
200 From : Sock_Addr_Type;
203 type Datagram_Socket_Stream_Access is
204 access all Datagram_Socket_Stream_Type;
207 (Stream : in out Datagram_Socket_Stream_Type;
208 Item : out Ada.Streams.Stream_Element_Array;
209 Last : out Ada.Streams.Stream_Element_Offset);
212 (Stream : in out Datagram_Socket_Stream_Type;
213 Item : Ada.Streams.Stream_Element_Array);
215 -- Types needed for Stream_Socket_Stream_Type
217 type Stream_Socket_Stream_Type is new Root_Stream_Type with record
218 Socket : Socket_Type;
221 type Stream_Socket_Stream_Access is
222 access all Stream_Socket_Stream_Type;
225 (Stream : in out Stream_Socket_Stream_Type;
226 Item : out Ada.Streams.Stream_Element_Array;
227 Last : out Ada.Streams.Stream_Element_Offset);
230 (Stream : in out Stream_Socket_Stream_Type;
231 Item : Ada.Streams.Stream_Element_Array);
237 function "+" (L, R : Request_Flag_Type) return Request_Flag_Type is
246 procedure Abort_Selector (Selector : Selector_Type) is
250 -- Send one byte to unblock select system call
252 Res := Signalling_Fds.Write (C.int (Selector.W_Sig_Socket));
254 if Res = Failure then
255 Raise_Socket_Error (Socket_Errno);
263 procedure Accept_Socket
264 (Server : Socket_Type;
265 Socket : out Socket_Type;
266 Address : out Sock_Addr_Type)
269 Sin : aliased Sockaddr_In;
270 Len : aliased C.int := Sin'Size / 8;
273 Res := C_Accept (C.int (Server), Sin'Address, Len'Access);
275 if Res = Failure then
276 Raise_Socket_Error (Socket_Errno);
279 Socket := Socket_Type (Res);
281 To_Inet_Addr (Sin.Sin_Addr, Address.Addr);
282 Address.Port := Port_Type (Network_To_Short (Sin.Sin_Port));
290 (E : Host_Entry_Type;
291 N : Positive := 1) return Inet_Addr_Type
294 return E.Addresses (N);
297 ----------------------
298 -- Addresses_Length --
299 ----------------------
301 function Addresses_Length (E : Host_Entry_Type) return Natural is
303 return E.Addresses_Length;
304 end Addresses_Length;
311 (E : Host_Entry_Type;
312 N : Positive := 1) return String
315 return To_String (E.Aliases (N));
323 (S : Service_Entry_Type;
324 N : Positive := 1) return String
327 return To_String (S.Aliases (N));
334 function Aliases_Length (E : Host_Entry_Type) return Natural is
336 return E.Aliases_Length;
343 function Aliases_Length (S : Service_Entry_Type) return Natural is
345 return S.Aliases_Length;
352 procedure Bind_Socket
353 (Socket : Socket_Type;
354 Address : Sock_Addr_Type)
357 Sin : aliased Sockaddr_In;
358 Len : constant C.int := Sin'Size / 8;
361 if Address.Family = Family_Inet6 then
365 Set_Length (Sin'Unchecked_Access, Len);
366 Set_Family (Sin'Unchecked_Access, Families (Address.Family));
367 Set_Address (Sin'Unchecked_Access, To_In_Addr (Address.Addr));
369 (Sin'Unchecked_Access,
370 Short_To_Network (C.unsigned_short (Address.Port)));
372 Res := C_Bind (C.int (Socket), Sin'Address, Len);
374 if Res = Failure then
375 Raise_Socket_Error (Socket_Errno);
383 procedure Check_Selector
384 (Selector : in out Selector_Type;
385 R_Socket_Set : in out Socket_Set_Type;
386 W_Socket_Set : in out Socket_Set_Type;
387 Status : out Selector_Status;
388 Timeout : Selector_Duration := Forever)
390 E_Socket_Set : Socket_Set_Type; -- (No_Socket, No_Socket_Set)
393 (Selector, R_Socket_Set, W_Socket_Set, E_Socket_Set, Status, Timeout);
396 procedure Check_Selector
397 (Selector : in out Selector_Type;
398 R_Socket_Set : in out Socket_Set_Type;
399 W_Socket_Set : in out Socket_Set_Type;
400 E_Socket_Set : in out Socket_Set_Type;
401 Status : out Selector_Status;
402 Timeout : Selector_Duration := Forever)
406 RSig : Socket_Type renames Selector.R_Sig_Socket;
407 RSet : Socket_Set_Type;
408 WSet : Socket_Set_Type;
409 ESet : Socket_Set_Type;
410 TVal : aliased Timeval;
411 TPtr : Timeval_Access;
417 -- No timeout or Forever is indicated by a null timeval pointer
419 if Timeout = Forever then
422 TVal := To_Timeval (Timeout);
423 TPtr := TVal'Unchecked_Access;
426 -- Copy R_Socket_Set in RSet and add read signalling socket
428 RSet := (Set => New_Socket_Set (R_Socket_Set.Set),
429 Last => R_Socket_Set.Last);
432 -- Copy W_Socket_Set in WSet
434 WSet := (Set => New_Socket_Set (W_Socket_Set.Set),
435 Last => W_Socket_Set.Last);
437 -- Copy E_Socket_Set in ESet
439 ESet := (Set => New_Socket_Set (E_Socket_Set.Set),
440 Last => E_Socket_Set.Last);
442 Last := C.int'Max (C.int'Max (C.int (RSet.Last),
454 if Res = Failure then
455 Raise_Socket_Error (Socket_Errno);
458 -- If Select was resumed because of read signalling socket, read this
459 -- data and remove socket from set.
461 if Is_Set (RSet, RSig) then
464 Res := Signalling_Fds.Read (C.int (RSig));
466 if Res = Failure then
467 Raise_Socket_Error (Socket_Errno);
476 -- Update RSet, WSet and ESet in regard to their new socket sets
482 -- Reset RSet as it should be if R_Sig_Socket was not added
484 if Is_Empty (RSet) then
488 if Is_Empty (WSet) then
492 if Is_Empty (ESet) then
496 -- Deliver RSet, WSet and ESet
498 Empty (R_Socket_Set);
499 R_Socket_Set := RSet;
501 Empty (W_Socket_Set);
502 W_Socket_Set := WSet;
504 Empty (E_Socket_Set);
505 E_Socket_Set := ESet;
510 -- The local socket sets must be emptied before propagating
511 -- Socket_Error so the associated storage is freed.
525 (Item : in out Socket_Set_Type;
526 Socket : Socket_Type)
528 Last : aliased C.int := C.int (Item.Last);
530 if Item.Last /= No_Socket then
531 Remove_Socket_From_Set (Item.Set, C.int (Socket));
532 Last_Socket_In_Set (Item.Set, Last'Unchecked_Access);
533 Item.Last := Socket_Type (Last);
541 procedure Close_Selector (Selector : in out Selector_Type) is
543 -- Close the signalling file descriptors used internally for the
544 -- implementation of Abort_Selector.
546 Signalling_Fds.Close (C.int (Selector.R_Sig_Socket));
547 Signalling_Fds.Close (C.int (Selector.W_Sig_Socket));
549 -- Reset R_Sig_Socket and W_Sig_Socket to No_Socket to ensure that any
550 -- (erroneous) subsequent attempt to use this selector properly fails.
552 Selector.R_Sig_Socket := No_Socket;
553 Selector.W_Sig_Socket := No_Socket;
560 procedure Close_Socket (Socket : Socket_Type) is
564 Res := C_Close (C.int (Socket));
566 if Res = Failure then
567 Raise_Socket_Error (Socket_Errno);
575 procedure Connect_Socket
576 (Socket : Socket_Type;
577 Server : in out Sock_Addr_Type)
579 pragma Warnings (Off, Server);
582 Sin : aliased Sockaddr_In;
583 Len : constant C.int := Sin'Size / 8;
586 if Server.Family = Family_Inet6 then
590 Set_Length (Sin'Unchecked_Access, Len);
591 Set_Family (Sin'Unchecked_Access, Families (Server.Family));
592 Set_Address (Sin'Unchecked_Access, To_In_Addr (Server.Addr));
594 (Sin'Unchecked_Access,
595 Short_To_Network (C.unsigned_short (Server.Port)));
597 Res := C_Connect (C.int (Socket), Sin'Address, Len);
599 if Res = Failure then
600 Raise_Socket_Error (Socket_Errno);
608 procedure Control_Socket
609 (Socket : Socket_Type;
610 Request : in out Request_Type)
617 when Non_Blocking_IO =>
618 Arg := C.int (Boolean'Pos (Request.Enabled));
620 when N_Bytes_To_Read =>
626 Requests (Request.Name),
627 Arg'Unchecked_Access);
629 if Res = Failure then
630 Raise_Socket_Error (Socket_Errno);
634 when Non_Blocking_IO =>
637 when N_Bytes_To_Read =>
638 Request.Size := Natural (Arg);
647 (Source : Socket_Set_Type;
648 Target : in out Socket_Set_Type)
652 if Source.Last /= No_Socket then
653 Target.Set := New_Socket_Set (Source.Set);
654 Target.Last := Source.Last;
658 ---------------------
659 -- Create_Selector --
660 ---------------------
662 procedure Create_Selector (Selector : out Selector_Type) is
663 Two_Fds : aliased Fd_Pair;
667 -- We open two signalling file descriptors. One of them is used to send
668 -- data to the other, which is included in a C_Select socket set. The
669 -- communication is used to force a call to C_Select to complete, and
670 -- the waiting task to resume its execution.
672 Res := Signalling_Fds.Create (Two_Fds'Access);
674 if Res = Failure then
675 Raise_Socket_Error (Socket_Errno);
678 Selector.R_Sig_Socket := Socket_Type (Two_Fds (Read_End));
679 Selector.W_Sig_Socket := Socket_Type (Two_Fds (Write_End));
686 procedure Create_Socket
687 (Socket : out Socket_Type;
688 Family : Family_Type := Family_Inet;
689 Mode : Mode_Type := Socket_Stream)
694 Res := C_Socket (Families (Family), Modes (Mode), 0);
696 if Res = Failure then
697 Raise_Socket_Error (Socket_Errno);
700 Socket := Socket_Type (Res);
707 procedure Empty (Item : in out Socket_Set_Type) is
709 if Item.Set /= No_Socket_Set then
710 Free_Socket_Set (Item.Set);
711 Item.Set := No_Socket_Set;
714 Item.Last := No_Socket;
721 function Err_Code_Image (E : Integer) return String is
722 Msg : String := E'Img & "] ";
724 Msg (Msg'First) := '[';
732 procedure Finalize is
747 (Item : in out Socket_Set_Type;
748 Socket : out Socket_Type)
751 L : aliased C.int := C.int (Item.Last);
754 if Item.Last /= No_Socket then
756 (Item.Set, L'Unchecked_Access, S'Unchecked_Access);
757 Item.Last := Socket_Type (L);
758 Socket := Socket_Type (S);
768 function Get_Address (Stream : Stream_Access) return Sock_Addr_Type is
770 if Stream = null then
772 elsif Stream.all in Datagram_Socket_Stream_Type then
773 return Datagram_Socket_Stream_Type (Stream.all).From;
775 return Get_Peer_Name (Stream_Socket_Stream_Type (Stream.all).Socket);
779 -------------------------
780 -- Get_Host_By_Address --
781 -------------------------
783 function Get_Host_By_Address
784 (Address : Inet_Addr_Type;
785 Family : Family_Type := Family_Inet) return Host_Entry_Type
787 pragma Unreferenced (Family);
789 HA : aliased In_Addr := To_In_Addr (Address);
790 Buflen : constant C.int := Netdb_Buffer_Size;
791 Buf : aliased C.char_array (1 .. Netdb_Buffer_Size);
792 Res : aliased Hostent;
796 if Safe_Gethostbyaddr (HA'Address, HA'Size / 8, Constants.AF_INET,
797 Res'Access, Buf'Address, Buflen, Err'Access) /= 0
799 Raise_Host_Error (Integer (Err));
802 return To_Host_Entry (Res);
803 end Get_Host_By_Address;
805 ----------------------
806 -- Get_Host_By_Name --
807 ----------------------
809 function Get_Host_By_Name (Name : String) return Host_Entry_Type is
811 -- Detect IP address name and redirect to Inet_Addr
813 if Is_IP_Address (Name) then
814 return Get_Host_By_Address (Inet_Addr (Name));
818 HN : constant C.char_array := C.To_C (Name);
819 Buflen : constant C.int := Netdb_Buffer_Size;
820 Buf : aliased C.char_array (1 .. Netdb_Buffer_Size);
821 Res : aliased Hostent;
825 if Safe_Gethostbyname
826 (HN, Res'Access, Buf'Address, Buflen, Err'Access) /= 0
828 Raise_Host_Error (Integer (Err));
831 return To_Host_Entry (Res);
833 end Get_Host_By_Name;
839 function Get_Peer_Name (Socket : Socket_Type) return Sock_Addr_Type is
840 Sin : aliased Sockaddr_In;
841 Len : aliased C.int := Sin'Size / 8;
842 Res : Sock_Addr_Type (Family_Inet);
845 if C_Getpeername (C.int (Socket), Sin'Address, Len'Access) = Failure then
846 Raise_Socket_Error (Socket_Errno);
849 To_Inet_Addr (Sin.Sin_Addr, Res.Addr);
850 Res.Port := Port_Type (Network_To_Short (Sin.Sin_Port));
855 -------------------------
856 -- Get_Service_By_Name --
857 -------------------------
859 function Get_Service_By_Name
861 Protocol : String) return Service_Entry_Type
863 SN : constant C.char_array := C.To_C (Name);
864 SP : constant C.char_array := C.To_C (Protocol);
865 Buflen : constant C.int := Netdb_Buffer_Size;
866 Buf : aliased C.char_array (1 .. Netdb_Buffer_Size);
867 Res : aliased Servent;
870 if Safe_Getservbyname (SN, SP, Res'Access, Buf'Address, Buflen) /= 0 then
871 raise Service_Error with "Service not found";
874 -- Translate from the C format to the API format
876 return To_Service_Entry (Res);
877 end Get_Service_By_Name;
879 -------------------------
880 -- Get_Service_By_Port --
881 -------------------------
883 function Get_Service_By_Port
885 Protocol : String) return Service_Entry_Type
887 SP : constant C.char_array := C.To_C (Protocol);
888 Buflen : constant C.int := Netdb_Buffer_Size;
889 Buf : aliased C.char_array (1 .. Netdb_Buffer_Size);
890 Res : aliased Servent;
893 if Safe_Getservbyport
894 (C.int (Short_To_Network (C.unsigned_short (Port))), SP,
895 Res'Access, Buf'Address, Buflen) /= 0
897 raise Service_Error with "Service not found";
900 -- Translate from the C format to the API format
902 return To_Service_Entry (Res);
903 end Get_Service_By_Port;
905 ---------------------
906 -- Get_Socket_Name --
907 ---------------------
909 function Get_Socket_Name
910 (Socket : Socket_Type) return Sock_Addr_Type
912 Sin : aliased Sockaddr_In;
913 Len : aliased C.int := Sin'Size / 8;
915 Addr : Sock_Addr_Type := No_Sock_Addr;
918 Res := C_Getsockname (C.int (Socket), Sin'Address, Len'Access);
920 if Res /= Failure then
921 To_Inet_Addr (Sin.Sin_Addr, Addr.Addr);
922 Addr.Port := Port_Type (Network_To_Short (Sin.Sin_Port));
928 -----------------------
929 -- Get_Socket_Option --
930 -----------------------
932 function Get_Socket_Option
933 (Socket : Socket_Type;
934 Level : Level_Type := Socket_Level;
935 Name : Option_Name) return Option_Type
937 use type C.unsigned_char;
939 V8 : aliased Two_Ints;
941 V1 : aliased C.unsigned_char;
942 VT : aliased Timeval;
944 Add : System.Address;
946 Opt : Option_Type (Name);
950 when Multicast_Loop |
952 Receive_Packet_Info =>
987 if Res = Failure then
988 Raise_Socket_Error (Socket_Errno);
996 Opt.Enabled := (V4 /= 0);
999 Opt.Enabled := (V8 (V8'First) /= 0);
1000 Opt.Seconds := Natural (V8 (V8'Last));
1004 Opt.Size := Natural (V4);
1007 Opt.Error := Resolve_Error (Integer (V4));
1009 when Add_Membership |
1011 To_Inet_Addr (To_In_Addr (V8 (V8'First)), Opt.Multicast_Address);
1012 To_Inet_Addr (To_In_Addr (V8 (V8'Last)), Opt.Local_Interface);
1014 when Multicast_If =>
1015 To_Inet_Addr (To_In_Addr (V4), Opt.Outgoing_If);
1017 when Multicast_TTL =>
1018 Opt.Time_To_Live := Integer (V1);
1020 when Multicast_Loop |
1021 Receive_Packet_Info =>
1022 Opt.Enabled := (V1 /= 0);
1026 Opt.Timeout := To_Duration (VT);
1030 end Get_Socket_Option;
1036 function Host_Name return String is
1037 Name : aliased C.char_array (1 .. 64);
1041 Res := C_Gethostname (Name'Address, Name'Length);
1043 if Res = Failure then
1044 Raise_Socket_Error (Socket_Errno);
1047 return C.To_Ada (Name);
1055 (Val : Inet_Addr_VN_Type;
1056 Hex : Boolean := False) return String
1058 -- The largest Inet_Addr_Comp_Type image occurs with IPv4. It
1059 -- has at most a length of 3 plus one '.' character.
1061 Buffer : String (1 .. 4 * Val'Length);
1062 Length : Natural := 1;
1063 Separator : Character;
1065 procedure Img10 (V : Inet_Addr_Comp_Type);
1066 -- Append to Buffer image of V in decimal format
1068 procedure Img16 (V : Inet_Addr_Comp_Type);
1069 -- Append to Buffer image of V in hexadecimal format
1075 procedure Img10 (V : Inet_Addr_Comp_Type) is
1076 Img : constant String := V'Img;
1077 Len : constant Natural := Img'Length - 1;
1079 Buffer (Length .. Length + Len - 1) := Img (2 .. Img'Last);
1080 Length := Length + Len;
1087 procedure Img16 (V : Inet_Addr_Comp_Type) is
1089 Buffer (Length) := Hex_To_Char (Natural (V / 16) + 1);
1090 Buffer (Length + 1) := Hex_To_Char (Natural (V mod 16) + 1);
1091 Length := Length + 2;
1094 -- Start of processing for Image
1103 for J in Val'Range loop
1110 if J /= Val'Last then
1111 Buffer (Length) := Separator;
1112 Length := Length + 1;
1116 return Buffer (1 .. Length - 1);
1123 function Image (Value : Inet_Addr_Type) return String is
1125 if Value.Family = Family_Inet then
1126 return Image (Inet_Addr_VN_Type (Value.Sin_V4), Hex => False);
1128 return Image (Inet_Addr_VN_Type (Value.Sin_V6), Hex => True);
1136 function Image (Value : Sock_Addr_Type) return String is
1137 Port : constant String := Value.Port'Img;
1139 return Image (Value.Addr) & ':' & Port (2 .. Port'Last);
1146 function Image (Socket : Socket_Type) return String is
1155 function Inet_Addr (Image : String) return Inet_Addr_Type is
1156 use Interfaces.C.Strings;
1160 Result : Inet_Addr_Type;
1163 -- Special case for the all-ones broadcast address: this address has the
1164 -- same in_addr_t value as Failure, and thus cannot be properly returned
1167 if Image = "255.255.255.255" then
1168 return Broadcast_Inet_Addr;
1170 -- Special case for an empty Image as on some platforms (e.g. Windows)
1171 -- calling Inet_Addr("") will not return an error.
1173 elsif Image = "" then
1174 Raise_Socket_Error (Constants.EINVAL);
1177 Img := New_String (Image);
1178 Res := C_Inet_Addr (Img);
1181 if Res = Failure then
1182 Raise_Socket_Error (Constants.EINVAL);
1185 To_Inet_Addr (To_In_Addr (Res), Result);
1193 procedure Initialize (Process_Blocking_IO : Boolean) is
1194 Expected : constant Boolean := not Constants.Thread_Blocking_IO;
1196 if Process_Blocking_IO /= Expected then
1197 raise Socket_Error with
1198 "incorrect Process_Blocking_IO setting, expected " & Expected'Img;
1208 procedure Initialize is
1210 if not Initialized then
1211 Initialized := True;
1220 function Is_Empty (Item : Socket_Set_Type) return Boolean is
1222 return Item.Last = No_Socket;
1229 function Is_IP_Address (Name : String) return Boolean is
1231 for J in Name'Range loop
1233 and then Name (J) not in '0' .. '9'
1247 (Item : Socket_Set_Type;
1248 Socket : Socket_Type) return Boolean
1251 return Item.Last /= No_Socket
1252 and then Socket <= Item.Last
1253 and then Is_Socket_In_Set (Item.Set, C.int (Socket)) /= 0;
1260 procedure Listen_Socket
1261 (Socket : Socket_Type;
1262 Length : Positive := 15)
1264 Res : constant C.int := C_Listen (C.int (Socket), C.int (Length));
1266 if Res = Failure then
1267 Raise_Socket_Error (Socket_Errno);
1275 procedure Narrow (Item : in out Socket_Set_Type) is
1276 Last : aliased C.int := C.int (Item.Last);
1278 if Item.Set /= No_Socket_Set then
1279 Last_Socket_In_Set (Item.Set, Last'Unchecked_Access);
1280 Item.Last := Socket_Type (Last);
1288 function Official_Name (E : Host_Entry_Type) return String is
1290 return To_String (E.Official);
1297 function Official_Name (S : Service_Entry_Type) return String is
1299 return To_String (S.Official);
1306 function Port_Number (S : Service_Entry_Type) return Port_Type is
1315 function Protocol_Name (S : Service_Entry_Type) return String is
1317 return To_String (S.Protocol);
1320 ----------------------
1321 -- Raise_Host_Error --
1322 ----------------------
1324 procedure Raise_Host_Error (H_Error : Integer) is
1326 raise Host_Error with
1327 Err_Code_Image (H_Error)
1328 & C.Strings.Value (Host_Error_Messages.Host_Error_Message (H_Error));
1329 end Raise_Host_Error;
1331 ------------------------
1332 -- Raise_Socket_Error --
1333 ------------------------
1335 procedure Raise_Socket_Error (Error : Integer) is
1336 use type C.Strings.chars_ptr;
1338 raise Socket_Error with
1339 Err_Code_Image (Error)
1340 & C.Strings.Value (Socket_Error_Message (Error));
1341 end Raise_Socket_Error;
1348 (Stream : in out Datagram_Socket_Stream_Type;
1349 Item : out Ada.Streams.Stream_Element_Array;
1350 Last : out Ada.Streams.Stream_Element_Offset)
1352 First : Ada.Streams.Stream_Element_Offset := Item'First;
1353 Index : Ada.Streams.Stream_Element_Offset := First - 1;
1354 Max : constant Ada.Streams.Stream_Element_Offset := Item'Last;
1360 Item (First .. Max),
1366 -- Exit when all or zero data received. Zero means that the socket
1369 exit when Index < First or else Index = Max;
1380 (Stream : in out Stream_Socket_Stream_Type;
1381 Item : out Ada.Streams.Stream_Element_Array;
1382 Last : out Ada.Streams.Stream_Element_Offset)
1384 pragma Warnings (Off, Stream);
1386 First : Ada.Streams.Stream_Element_Offset := Item'First;
1387 Index : Ada.Streams.Stream_Element_Offset := First - 1;
1388 Max : constant Ada.Streams.Stream_Element_Offset := Item'Last;
1392 Receive_Socket (Stream.Socket, Item (First .. Max), Index);
1395 -- Exit when all or zero data received. Zero means that the socket
1398 exit when Index < First or else Index = Max;
1404 --------------------
1405 -- Receive_Socket --
1406 --------------------
1408 procedure Receive_Socket
1409 (Socket : Socket_Type;
1410 Item : out Ada.Streams.Stream_Element_Array;
1411 Last : out Ada.Streams.Stream_Element_Offset;
1412 Flags : Request_Flag_Type := No_Request_Flag)
1418 C_Recv (C.int (Socket), Item'Address, Item'Length, To_Int (Flags));
1420 if Res = Failure then
1421 Raise_Socket_Error (Socket_Errno);
1424 Last := Item'First + Ada.Streams.Stream_Element_Offset (Res - 1);
1427 --------------------
1428 -- Receive_Socket --
1429 --------------------
1431 procedure Receive_Socket
1432 (Socket : Socket_Type;
1433 Item : out Ada.Streams.Stream_Element_Array;
1434 Last : out Ada.Streams.Stream_Element_Offset;
1435 From : out Sock_Addr_Type;
1436 Flags : Request_Flag_Type := No_Request_Flag)
1439 Sin : aliased Sockaddr_In;
1440 Len : aliased C.int := Sin'Size / 8;
1449 Sin'Unchecked_Access,
1452 if Res = Failure then
1453 Raise_Socket_Error (Socket_Errno);
1456 Last := Item'First + Ada.Streams.Stream_Element_Offset (Res - 1);
1458 To_Inet_Addr (Sin.Sin_Addr, From.Addr);
1459 From.Port := Port_Type (Network_To_Short (Sin.Sin_Port));
1466 function Resolve_Error
1467 (Error_Value : Integer;
1468 From_Errno : Boolean := True) return Error_Type
1470 use GNAT.Sockets.Constants;
1473 if not From_Errno then
1475 when Constants.HOST_NOT_FOUND => return Unknown_Host;
1476 when Constants.TRY_AGAIN => return Host_Name_Lookup_Failure;
1477 when Constants.NO_RECOVERY => return Non_Recoverable_Error;
1478 when Constants.NO_DATA => return Unknown_Server_Error;
1479 when others => return Cannot_Resolve_Error;
1484 when ENOERROR => return Success;
1485 when EACCES => return Permission_Denied;
1486 when EADDRINUSE => return Address_Already_In_Use;
1487 when EADDRNOTAVAIL => return Cannot_Assign_Requested_Address;
1488 when EAFNOSUPPORT => return
1489 Address_Family_Not_Supported_By_Protocol;
1490 when EALREADY => return Operation_Already_In_Progress;
1491 when EBADF => return Bad_File_Descriptor;
1492 when ECONNABORTED => return Software_Caused_Connection_Abort;
1493 when ECONNREFUSED => return Connection_Refused;
1494 when ECONNRESET => return Connection_Reset_By_Peer;
1495 when EDESTADDRREQ => return Destination_Address_Required;
1496 when EFAULT => return Bad_Address;
1497 when EHOSTDOWN => return Host_Is_Down;
1498 when EHOSTUNREACH => return No_Route_To_Host;
1499 when EINPROGRESS => return Operation_Now_In_Progress;
1500 when EINTR => return Interrupted_System_Call;
1501 when EINVAL => return Invalid_Argument;
1502 when EIO => return Input_Output_Error;
1503 when EISCONN => return Transport_Endpoint_Already_Connected;
1504 when ELOOP => return Too_Many_Symbolic_Links;
1505 when EMFILE => return Too_Many_Open_Files;
1506 when EMSGSIZE => return Message_Too_Long;
1507 when ENAMETOOLONG => return File_Name_Too_Long;
1508 when ENETDOWN => return Network_Is_Down;
1509 when ENETRESET => return
1510 Network_Dropped_Connection_Because_Of_Reset;
1511 when ENETUNREACH => return Network_Is_Unreachable;
1512 when ENOBUFS => return No_Buffer_Space_Available;
1513 when ENOPROTOOPT => return Protocol_Not_Available;
1514 when ENOTCONN => return Transport_Endpoint_Not_Connected;
1515 when ENOTSOCK => return Socket_Operation_On_Non_Socket;
1516 when EOPNOTSUPP => return Operation_Not_Supported;
1517 when EPFNOSUPPORT => return Protocol_Family_Not_Supported;
1518 when EPROTONOSUPPORT => return Protocol_Not_Supported;
1519 when EPROTOTYPE => return Protocol_Wrong_Type_For_Socket;
1520 when ESHUTDOWN => return
1521 Cannot_Send_After_Transport_Endpoint_Shutdown;
1522 when ESOCKTNOSUPPORT => return Socket_Type_Not_Supported;
1523 when ETIMEDOUT => return Connection_Timed_Out;
1524 when ETOOMANYREFS => return Too_Many_References;
1525 when EWOULDBLOCK => return Resource_Temporarily_Unavailable;
1526 when others => null;
1529 return Cannot_Resolve_Error;
1532 -----------------------
1533 -- Resolve_Exception --
1534 -----------------------
1536 function Resolve_Exception
1537 (Occurrence : Exception_Occurrence) return Error_Type
1539 Id : constant Exception_Id := Exception_Identity (Occurrence);
1540 Msg : constant String := Exception_Message (Occurrence);
1547 while First <= Msg'Last
1548 and then Msg (First) not in '0' .. '9'
1553 if First > Msg'Last then
1554 return Cannot_Resolve_Error;
1558 while Last < Msg'Last
1559 and then Msg (Last + 1) in '0' .. '9'
1564 Val := Integer'Value (Msg (First .. Last));
1566 if Id = Socket_Error_Id then
1567 return Resolve_Error (Val);
1568 elsif Id = Host_Error_Id then
1569 return Resolve_Error (Val, False);
1571 return Cannot_Resolve_Error;
1573 end Resolve_Exception;
1575 --------------------
1576 -- Receive_Vector --
1577 --------------------
1579 procedure Receive_Vector
1580 (Socket : Socket_Type;
1581 Vector : Vector_Type;
1582 Count : out Ada.Streams.Stream_Element_Count)
1593 if Res = Failure then
1594 Raise_Socket_Error (Socket_Errno);
1597 Count := Ada.Streams.Stream_Element_Count (Res);
1604 procedure Send_Socket
1605 (Socket : Socket_Type;
1606 Item : Ada.Streams.Stream_Element_Array;
1607 Last : out Ada.Streams.Stream_Element_Offset;
1608 Flags : Request_Flag_Type := No_Request_Flag)
1618 Set_Forced_Flags (To_Int (Flags)));
1620 if Res = Failure then
1621 Raise_Socket_Error (Socket_Errno);
1624 Last := Item'First + Ada.Streams.Stream_Element_Offset (Res - 1);
1631 procedure Send_Socket
1632 (Socket : Socket_Type;
1633 Item : Ada.Streams.Stream_Element_Array;
1634 Last : out Ada.Streams.Stream_Element_Offset;
1635 To : Sock_Addr_Type;
1636 Flags : Request_Flag_Type := No_Request_Flag)
1639 Sin : aliased Sockaddr_In;
1640 Len : constant C.int := Sin'Size / 8;
1643 Set_Length (Sin'Unchecked_Access, Len);
1644 Set_Family (Sin'Unchecked_Access, Families (To.Family));
1645 Set_Address (Sin'Unchecked_Access, To_In_Addr (To.Addr));
1647 (Sin'Unchecked_Access,
1648 Short_To_Network (C.unsigned_short (To.Port)));
1654 Set_Forced_Flags (To_Int (Flags)),
1655 Sin'Unchecked_Access,
1658 if Res = Failure then
1659 Raise_Socket_Error (Socket_Errno);
1662 Last := Item'First + Ada.Streams.Stream_Element_Offset (Res - 1);
1669 procedure Send_Vector
1670 (Socket : Socket_Type;
1671 Vector : Vector_Type;
1672 Count : out Ada.Streams.Stream_Element_Count)
1676 This_Iov_Count : C.int;
1681 while Iov_Count < Vector'Length loop
1683 pragma Warnings (Off);
1684 -- Following test may be compile time known on some targets
1686 if Vector'Length - Iov_Count > Constants.IOV_MAX then
1687 This_Iov_Count := Constants.IOV_MAX;
1689 This_Iov_Count := Vector'Length - Iov_Count;
1692 pragma Warnings (On);
1697 Vector (Vector'First + Integer (Iov_Count))'Address,
1700 if Res = Failure then
1701 Raise_Socket_Error (Socket_Errno);
1704 Count := Count + Ada.Streams.Stream_Element_Count (Res);
1705 Iov_Count := Iov_Count + This_Iov_Count;
1713 procedure Set (Item : in out Socket_Set_Type; Socket : Socket_Type) is
1715 if Item.Set = No_Socket_Set then
1716 Item.Set := New_Socket_Set (No_Socket_Set);
1717 Item.Last := Socket;
1719 elsif Item.Last < Socket then
1720 Item.Last := Socket;
1723 Insert_Socket_In_Set (Item.Set, C.int (Socket));
1726 ----------------------
1727 -- Set_Forced_Flags --
1728 ----------------------
1730 function Set_Forced_Flags (F : C.int) return C.int is
1731 use type C.unsigned;
1732 function To_unsigned is
1733 new Ada.Unchecked_Conversion (C.int, C.unsigned);
1735 new Ada.Unchecked_Conversion (C.unsigned, C.int);
1737 return To_int (To_unsigned (F) or Constants.MSG_Forced_Flags);
1738 end Set_Forced_Flags;
1740 -----------------------
1741 -- Set_Socket_Option --
1742 -----------------------
1744 procedure Set_Socket_Option
1745 (Socket : Socket_Type;
1746 Level : Level_Type := Socket_Level;
1747 Option : Option_Type)
1749 V8 : aliased Two_Ints;
1751 V1 : aliased C.unsigned_char;
1752 VT : aliased Timeval;
1754 Add : System.Address := Null_Address;
1763 V4 := C.int (Boolean'Pos (Option.Enabled));
1768 V8 (V8'First) := C.int (Boolean'Pos (Option.Enabled));
1769 V8 (V8'Last) := C.int (Option.Seconds);
1775 V4 := C.int (Option.Size);
1780 V4 := C.int (Boolean'Pos (True));
1784 when Add_Membership |
1786 V8 (V8'First) := To_Int (To_In_Addr (Option.Multicast_Address));
1787 V8 (V8'Last) := To_Int (To_In_Addr (Option.Local_Interface));
1791 when Multicast_If =>
1792 V4 := To_Int (To_In_Addr (Option.Outgoing_If));
1796 when Multicast_TTL =>
1797 V1 := C.unsigned_char (Option.Time_To_Live);
1801 when Multicast_Loop |
1802 Receive_Packet_Info =>
1803 V1 := C.unsigned_char (Boolean'Pos (Option.Enabled));
1809 VT := To_Timeval (Option.Timeout);
1818 Options (Option.Name),
1821 if Res = Failure then
1822 Raise_Socket_Error (Socket_Errno);
1824 end Set_Socket_Option;
1826 ----------------------
1827 -- Short_To_Network --
1828 ----------------------
1830 function Short_To_Network (S : C.unsigned_short) return C.unsigned_short is
1831 use type C.unsigned_short;
1834 -- Big-endian case. No conversion needed. On these platforms,
1835 -- htons() defaults to a null procedure.
1837 pragma Warnings (Off);
1838 -- Since the test can generate "always True/False" warning
1840 if Default_Bit_Order = High_Order_First then
1843 pragma Warnings (On);
1845 -- Little-endian case. We must swap the high and low bytes of this
1846 -- short to make the port number network compliant.
1849 return (S / 256) + (S mod 256) * 256;
1851 end Short_To_Network;
1853 ---------------------
1854 -- Shutdown_Socket --
1855 ---------------------
1857 procedure Shutdown_Socket
1858 (Socket : Socket_Type;
1859 How : Shutmode_Type := Shut_Read_Write)
1864 Res := C_Shutdown (C.int (Socket), Shutmodes (How));
1866 if Res = Failure then
1867 Raise_Socket_Error (Socket_Errno);
1869 end Shutdown_Socket;
1876 (Socket : Socket_Type;
1877 Send_To : Sock_Addr_Type) return Stream_Access
1879 S : Datagram_Socket_Stream_Access;
1882 S := new Datagram_Socket_Stream_Type;
1885 S.From := Get_Socket_Name (Socket);
1886 return Stream_Access (S);
1893 function Stream (Socket : Socket_Type) return Stream_Access is
1894 S : Stream_Socket_Stream_Access;
1896 S := new Stream_Socket_Stream_Type;
1898 return Stream_Access (S);
1905 function To_C (Socket : Socket_Type) return Integer is
1907 return Integer (Socket);
1914 function To_Duration (Val : Timeval) return Timeval_Duration is
1916 return Natural (Val.Tv_Sec) * 1.0 + Natural (Val.Tv_Usec) * 1.0E-6;
1923 function To_Host_Entry (E : Hostent) return Host_Entry_Type is
1926 Official : constant String :=
1927 C.Strings.Value (E.H_Name);
1929 Aliases : constant Chars_Ptr_Array :=
1930 Chars_Ptr_Pointers.Value (E.H_Aliases);
1931 -- H_Aliases points to a list of name aliases. The list is terminated by
1934 Addresses : constant In_Addr_Access_Array :=
1935 In_Addr_Access_Pointers.Value (E.H_Addr_List);
1936 -- H_Addr_List points to a list of binary addresses (in network byte
1937 -- order). The list is terminated by a NULL pointer.
1939 -- H_Length is not used because it is currently only set to 4.
1940 -- H_Addrtype is always AF_INET
1942 Result : Host_Entry_Type
1943 (Aliases_Length => Aliases'Length - 1,
1944 Addresses_Length => Addresses'Length - 1);
1945 -- The last element is a null pointer
1951 Result.Official := To_Name (Official);
1953 Source := Aliases'First;
1954 Target := Result.Aliases'First;
1955 while Target <= Result.Aliases_Length loop
1956 Result.Aliases (Target) :=
1957 To_Name (C.Strings.Value (Aliases (Source)));
1958 Source := Source + 1;
1959 Target := Target + 1;
1962 Source := Addresses'First;
1963 Target := Result.Addresses'First;
1964 while Target <= Result.Addresses_Length loop
1965 To_Inet_Addr (Addresses (Source).all, Result.Addresses (Target));
1966 Source := Source + 1;
1967 Target := Target + 1;
1977 function To_In_Addr (Addr : Inet_Addr_Type) return Thin.In_Addr is
1979 if Addr.Family = Family_Inet then
1980 return (S_B1 => C.unsigned_char (Addr.Sin_V4 (1)),
1981 S_B2 => C.unsigned_char (Addr.Sin_V4 (2)),
1982 S_B3 => C.unsigned_char (Addr.Sin_V4 (3)),
1983 S_B4 => C.unsigned_char (Addr.Sin_V4 (4)));
1993 procedure To_Inet_Addr
1995 Result : out Inet_Addr_Type) is
1997 Result.Sin_V4 (1) := Inet_Addr_Comp_Type (Addr.S_B1);
1998 Result.Sin_V4 (2) := Inet_Addr_Comp_Type (Addr.S_B2);
1999 Result.Sin_V4 (3) := Inet_Addr_Comp_Type (Addr.S_B3);
2000 Result.Sin_V4 (4) := Inet_Addr_Comp_Type (Addr.S_B4);
2007 function To_Int (F : Request_Flag_Type) return C.int
2009 Current : Request_Flag_Type := F;
2010 Result : C.int := 0;
2013 for J in Flags'Range loop
2014 exit when Current = 0;
2016 if Current mod 2 /= 0 then
2017 if Flags (J) = -1 then
2018 Raise_Socket_Error (Constants.EOPNOTSUPP);
2021 Result := Result + Flags (J);
2024 Current := Current / 2;
2034 function To_Name (N : String) return Name_Type is
2036 return Name_Type'(N'Length, N);
2039 ----------------------
2040 -- To_Service_Entry --
2041 ----------------------
2043 function To_Service_Entry (E : Servent) return Service_Entry_Type is
2046 Official : constant String := C.Strings.Value (E.S_Name);
2048 Aliases : constant Chars_Ptr_Array :=
2049 Chars_Ptr_Pointers.Value (E.S_Aliases);
2050 -- S_Aliases points to a list of name aliases. The list is
2051 -- terminated by a NULL pointer.
2053 Protocol : constant String := C.Strings.Value (E.S_Proto);
2055 Result : Service_Entry_Type (Aliases_Length => Aliases'Length - 1);
2056 -- The last element is a null pointer
2062 Result.Official := To_Name (Official);
2064 Source := Aliases'First;
2065 Target := Result.Aliases'First;
2066 while Target <= Result.Aliases_Length loop
2067 Result.Aliases (Target) :=
2068 To_Name (C.Strings.Value (Aliases (Source)));
2069 Source := Source + 1;
2070 Target := Target + 1;
2074 Port_Type (Network_To_Short (C.unsigned_short (E.S_Port)));
2076 Result.Protocol := To_Name (Protocol);
2078 end To_Service_Entry;
2084 function To_String (HN : Name_Type) return String is
2086 return HN.Name (1 .. HN.Length);
2093 function To_Timeval (Val : Timeval_Duration) return Timeval is
2098 -- If zero, set result as zero (otherwise it gets rounded down to -1)
2104 -- Normal case where we do round down
2107 S := time_t (Val - 0.5);
2108 uS := suseconds_t (1_000_000 * (Val - Selector_Duration (S)));
2119 (Stream : in out Datagram_Socket_Stream_Type;
2120 Item : Ada.Streams.Stream_Element_Array)
2122 pragma Warnings (Off, Stream);
2124 First : Ada.Streams.Stream_Element_Offset := Item'First;
2125 Index : Ada.Streams.Stream_Element_Offset := First - 1;
2126 Max : constant Ada.Streams.Stream_Element_Offset := Item'Last;
2132 Item (First .. Max),
2136 -- Exit when all or zero data sent. Zero means that the socket has
2137 -- been closed by peer.
2139 exit when Index < First or else Index = Max;
2144 if Index /= Max then
2154 (Stream : in out Stream_Socket_Stream_Type;
2155 Item : Ada.Streams.Stream_Element_Array)
2157 pragma Warnings (Off, Stream);
2159 First : Ada.Streams.Stream_Element_Offset := Item'First;
2160 Index : Ada.Streams.Stream_Element_Offset := First - 1;
2161 Max : constant Ada.Streams.Stream_Element_Offset := Item'Last;
2165 Send_Socket (Stream.Socket, Item (First .. Max), Index);
2167 -- Exit when all or zero data sent. Zero means that the socket has
2168 -- been closed by peer.
2170 exit when Index < First or else Index = Max;
2175 if Index /= Max then