feat(runtime): implement `server.requestIp` + node:http `socket.address()` (#6165)

* [server] requestIp and AnyRequestContext
Changed Request.uws_request to the new AnyRequestContext. This
allows grabbing the IP from a Request. Unfinished.

* [server] basic `requestIp` implementation

Currently using uws's requestIpAsText, which always returns a ipv6
string. We should return a `SocketAddress` object to the user instead,
which will contain the formatted address string and what type it is.
We'll have to use requestIpAsBinary and parse that ourselves.

* TypeScript docs, use `bun.String`, return `undefined` instead of `null`
if we can't get the ip.

* binary address formatting

* uws getRemoteAddress binding

* remove dead code

* working

* final touches:sparkles:

* I will abide by the results of this poll.

---------

Co-authored-by: Parzival-3141 <29632054+Parzival-3141@users.noreply.github.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/bun.js/bindings/JSSocketAddress.cpp b/src/bun.js/bindings/JSSocketAddress.cpp
new file mode 100644
index 000000000..53084adb6
--- /dev/null
+++ b/src/bun.js/bindings/JSSocketAddress.cpp
@@ -0,0 +1,61 @@
+#include "JSSocketAddress.h"
+#include "ZigGlobalObject.h"
+#include "JavaScriptCore/JSObjectInlines.h"
+#include "JavaScriptCore/ObjectConstructor.h"
+#include "JavaScriptCore/JSCast.h"
+
+using namespace JSC;
+
+namespace Bun {
+namespace JSSocketAddress {
+
+// Using a structure with inlined offsets will be more lightweight than a class.
+
+Structure* createStructure(VM& vm, JSGlobalObject* globalObject)
+{
+    JSC::Structure* structure = globalObject->structureCache().emptyObjectStructureForPrototype(
+        globalObject,
+        globalObject->objectPrototype(),
+        3);
+
+    JSC::PropertyOffset offset;
+    structure = structure->addPropertyTransition(
+        vm,
+        structure,
+        JSC::Identifier::fromString(vm, "address"_s),
+        0,
+        offset);
+
+    structure = structure->addPropertyTransition(
+        vm,
+        structure,
+        JSC::Identifier::fromString(vm, "family"_s),
+        0,
+        offset);
+
+    structure = structure->addPropertyTransition(
+        vm,
+        structure,
+        JSC::Identifier::fromString(vm, "port"_s),
+        0,
+        offset);
+
+    return structure;
+}
+
+} // namespace JSSocketAddress
+} // namespace Bun
+
+extern "C" JSObject* JSSocketAddress__create(JSGlobalObject* globalObject, JSString* value, int32_t port, bool isIPv6)
+{
+    VM& vm = globalObject->vm();
+
+    auto* global = jsCast<Zig::GlobalObject*>(globalObject);
+
+    JSObject* thisObject = constructEmptyObject(vm, global->JSSocketAddressStructure());
+    thisObject->putDirectOffset(vm, 0, value);
+    thisObject->putDirectOffset(vm, 1, isIPv6 ? jsString(vm, Bun::JSSocketAddress::IPv6) : jsString(vm, Bun::JSSocketAddress::IPv4));
+    thisObject->putDirectOffset(vm, 2, jsNumber(port));
+
+    return thisObject;
+}