win32 http request

examples/httprequest.nim

@@ -0,0 +1,23 @@
+import windy
+
+# HTTP requests do not block.
+
+# All callbacks are called on the main thread.
+
+# You can have many requests in-flight at the same time.
+
+# Calling startHttpRequest never fails. If there is any error, onError will
+# be called during the next pollEvents (or later).
+
+let req = startHttpRequest("https://www.google.com")
+
+req.onError = proc(msg: string) =
+  echo "onError: " & msg
+
+req.onResponse = proc(response: HttpResponse) =
+  echo "onResponse: code=", $response.code, ", len=", response.body.len
+
+# Closing the window exits the demo
+let window = newWindow("Windy Basic", ivec2(1280, 800))
+while not window.closeRequested:
+  pollEvents()

src/windy/common.nim

@@ -1,4 +1,4 @@
-import pixie, unicode
+import pixie, std/strutils, std/unicode
 
 type
   WindyError* = object of ValueError
@@ -18,6 +18,20 @@ type
       image*: Image
       hotspot*: IVec2
 
+  HttpHeader* = object
+    key*, value*: string
+
+  HttpRequestHandle* = distinct int
+  WebSocketHandle* = distinct int
+
+  HttpResponse* = ref object
+    code*: int
+    headers*: seq[HttpHeader]
+    body*: string
+
+  WebSocketMessageKind* = enum
+    Utf8Message, BinaryMessage
+
   ClipboardContentKind* = enum
     TextContent, ImageContent
 
@@ -30,6 +44,10 @@ type
   Callback* = proc()
   ButtonCallback* = proc(button: Button)
   RuneCallback* = proc(rune: Rune)
+  HttpErrorCallback* = proc(msg: string)
+  HttpResponseCallback* = proc(response: HttpResponse)
+  HttpProgressCallback* = proc(completed, total: int)
+  WebSocketMessageCallback* = proc(msg: string, kind: WebSocketMessageKind)
 
   Button* = enum
     ButtonUnknown
@@ -149,8 +167,27 @@ type
 
   ButtonView* = distinct set[Button]
 
+const
+  defaultHttpDeadline*: float32 = -1
+
 proc `[]`*(buttonView: ButtonView, button: Button): bool =
   button in set[Button](buttonView)
 
 proc len*(buttonView: ButtonView): int =
   set[Button](buttonView).len
+
+proc `[]`*(headers: seq[HttpHeader], key: string): string =
+  ## Get a key out of headers. Not case sensitive.
+  ## Use a for loop to get duplicate keys.
+  for header in headers:
+    if header.key.toLowerAscii() == key.toLowerAscii():
+      return header.value
+
+proc `[]=`*(headers: var seq[HttpHeader], key, value: string) =
+  ## Sets a key in the headers. Not case sensitive.
+  ## Overwrites the existing header for key if it exists else adds a new header.
+  for header in headers.mitems:
+    if header.key.toLowerAscii() == key.toLowerAscii():
+      header.value = value
+      return
+  headers.add(HttpHeader(key: key, value: value))

src/windy/internal.nim

@@ -1,10 +1,11 @@
-import common, pixie
+import common, pixie, std/random
 
 const
   multiClickRadius = 4
+  CRLF* = "\r\n"
 
 type
-  State* = object
+  WindowState* = object
     title*: string
     icon*: Image
     cursor*: Cursor
@@ -30,6 +31,7 @@ type
 var
   initialized*: bool
   platformDoubleClickInterval*: float64
+  windyRand* = initRand(2022)
 
 template handleButtonPressTemplate*() =
   window.state.buttonDown.incl button
@@ -122,3 +124,10 @@ template handleRuneTemplate*() =
     return
   if window.onRune != nil:
     window.onRune(rune)
+
+proc addDefaultHeaders*(headers: var seq[HttpHeader]) =
+  if headers["user-agent"].len == 0:
+    headers["user-agent"] = "Windy"
+  if headers["accept-encoding"].len == 0:
+    # If there isn't a specific accept-encoding specified, enable gzip
+    headers["accept-encoding"] = "gzip"

src/windy/platforms/macos/platform.nim

@@ -15,7 +15,7 @@ type
     onImeChange*: Callback
     imePos*: IVec2
 
-    state: State
+    state: WindowState
 
     inner: NSWindow
     trackingArea: NSTrackingArea