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#import "fmt.odin" as fmt
#foreign_system_library "Ws2_32"
SOCKET :: type uint
INVALID_SOCKET :: ~(0 as SOCKET)
AF :: enum i32 {
UNSPEC = 0, // unspecified
UNIX = 1, // local to host (pipes, portals)
INET = 2, // internetwork: UDP, TCP, etc.
IMPLINK = 3, // arpanet imp addresses
PUP = 4, // pup protocols: e.g. BSP
CHAOS = 5, // mit CHAOS protocols
NS = 6, // XEROX NS protocols
ISO = 7, // ISO protocols
OSI = ISO, // OSI is ISO
ECMA = 8, // european computer manufacturers
DATAKIT = 9, // datakit protocols
CCITT = 10, // CCITT protocols, X.25 etc
SNA = 11, // IBM SNA
DECnet = 12, // DECnet
DLI = 13, // Direct data link interface
LAT = 14, // LAT
HYLINK = 15, // NSC Hyperchannel
APPLETALK = 16, // AppleTalk
ROUTE = 17, // Internal Routing Protocol
LINK = 18, // Link layer interface
XTP = 19, // eXpress Transfer Protocol (no AF)
COIP = 20, // connection-oriented IP, aka ST II
CNT = 21, // Computer Network Technology
RTIP = 22, // Help Identify RTIP packets
IPX = 23, // Novell Internet Protocol
SIP = 24, // Simple Internet Protocol
PIP = 25, // Help Identify PIP packets
MAX = 26,
}
SOCK_STREAM :: 1
SOCKET_ERROR :: -1
IPPROTO_TCP :: 6
AI_PASSIVE :: 0x0020
SOMAXCONN :: 128
SD_RECEIVE :: 0
SD_SEND :: 1
SD_BOTH :: 2
WSADESCRIPTION_LEN :: 256
WSASYS_STATUS_LEN :: 128
WSADATA :: struct #ordered {
version: i16
high_version: i16
// NOTE(bill): This is x64 ordering
max_sockets: u16
max_udp_dg: u16
vendor_info: ^byte
description: [WSADESCRIPTION_LEN+1]byte
system_status: [WSASYS_STATUS_LEN+1]byte
}
addrinfo :: struct #ordered {
flags: i32
family: i32
socktype: i32
protocol: i32
addrlen: uint
canonname: ^u8
addr: ^sockaddr
next: ^addrinfo
}
sockaddr :: struct #ordered {
family: u16
data: [14]byte
}
WSAStartup :: proc(version_requested: i16, data: ^WSADATA) -> i32 #foreign #dll_import
WSACleanup :: proc() -> i32 #foreign #dll_import
getaddrinfo :: proc(node_name, service_name: ^u8, hints: ^addrinfo, result: ^^addrinfo) -> i32 #foreign #dll_import
freeaddrinfo :: proc(ai: ^addrinfo) #foreign #dll_import
socket :: proc(af, type_, protocol: i32) -> SOCKET #foreign #dll_import
closesocket :: proc(s: SOCKET) -> i32 #foreign #dll_import
bind :: proc(s: SOCKET, name: ^sockaddr, name_len: i32) -> i32 #foreign #dll_import
listen :: proc(s: SOCKET, back_log: i32) -> i32 #foreign #dll_import
accept :: proc(s: SOCKET, addr: ^sockaddr, addr_len: i32) -> SOCKET #foreign #dll_import
recv :: proc(s: SOCKET, buf: ^byte, len: i32, flags: i32) -> i32 #foreign #dll_import
send :: proc(s: SOCKET, buf: ^byte, len: i32, flags: i32) -> i32 #foreign #dll_import
shutdown :: proc(s: SOCKET, how: i32) -> i32 #foreign #dll_import
WSAGetLastError :: proc() -> i32 #foreign #dll_import
to_c_string :: proc(s: string) -> ^byte {
c_str := new_slice(byte, s.count+1)
assert(c_str.data != null)
copy(c_str, s as []byte)
c_str[s.count] = 0
return c_str.data
}
run :: proc() {
wsa: WSADATA
res: ^addrinfo = null
hints: addrinfo
s, client: SOCKET
if WSAStartup(2 | (2 << 8), ^wsa) != 0 {
fmt.println("WSAStartup failed: ", WSAGetLastError())
return
}
defer WSACleanup()
hints.family = AF.INET as i32
hints.socktype = SOCK_STREAM
hints.protocol = IPPROTO_TCP
hints.flags = AI_PASSIVE
if getaddrinfo(null, to_c_string("8080"), ^hints, ^res) != 0 {
fmt.println("getaddrinfo failed: ", WSAGetLastError())
return
}
defer freeaddrinfo(res)
s = socket(res.family, res.socktype, res.protocol)
if s == INVALID_SOCKET {
fmt.println("socket failed: ", WSAGetLastError())
return
}
defer closesocket(s)
bind(s, res.addr, res.addrlen as i32)
listen(s, SOMAXCONN)
client = accept(s, null, null)
if client == INVALID_SOCKET {
fmt.println("socket failed: ", WSAGetLastError())
return
}
defer closesocket(client)
html :=
`HTTP/1.1 200 OK
Connection: close
Content-type: text/html
<html>
<head>
<title>Demo Title</title>
</head>
<body>
<h1 style="color: orange;">Odin Server Demo</h1>
</body>
</html>
`
buf: [1024]byte
for {
bytes := recv(client, ^buf[0], buf.count as i32, 0)
if bytes > 0 {
// fmt.println(buf[:bytes] as string)
bytes_sent := send(client, html.data, (html.count-1) as i32, 0)
if bytes_sent == SOCKET_ERROR {
fmt.println("send failed: ", WSAGetLastError())
return
}
break
} else if bytes == 0 {
fmt.println("Connection closing...")
break
} else {
fmt.println("recv failed: ", WSAGetLastError())
return
}
}
shutdown(client, SD_SEND)
}
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