From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 media/mtransport/transportlayerprsock.cpp | 116 ++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 media/mtransport/transportlayerprsock.cpp

(limited to 'media/mtransport/transportlayerprsock.cpp')

diff --git a/media/mtransport/transportlayerprsock.cpp b/media/mtransport/transportlayerprsock.cpp
new file mode 100644
index 000000000..ccaff32d1
--- /dev/null
+++ b/media/mtransport/transportlayerprsock.cpp
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Original author: ekr@rtfm.com
+
+#include "logging.h"
+#include "nspr.h"
+#include "prerror.h"
+#include "prio.h"
+
+#include "nsCOMPtr.h"
+#include "nsASocketHandler.h"
+#include "nsISocketTransportService.h"
+#include "nsNetCID.h"
+#include "nsServiceManagerUtils.h"
+#include "nsXPCOM.h"
+
+#include "transportflow.h"
+#include "transportlayerprsock.h"
+
+namespace mozilla {
+
+MOZ_MTLOG_MODULE("mtransport")
+
+nsresult TransportLayerPrsock::InitInternal() {
+  // Get the transport service as a transport service
+  nsresult rv;
+  stservice_ = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
+
+  if (!NS_SUCCEEDED(rv)) {
+    MOZ_MTLOG(ML_ERROR, "Couldn't get socket transport service");
+    return rv;
+  }
+
+  return NS_OK;
+}
+
+void TransportLayerPrsock::Import(PRFileDesc *fd, nsresult *result) {
+  if (state_ != TS_INIT) {
+    *result = NS_ERROR_NOT_INITIALIZED;
+    return;
+  }
+
+  MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Importing()");
+  fd_ = fd;
+  handler_ = new SocketHandler(this, fd);
+
+  nsresult rv = stservice_->AttachSocket(fd_, handler_);
+  if (!NS_SUCCEEDED(rv)) {
+    *result = rv;
+    return;
+  }
+
+  TL_SET_STATE(TS_OPEN);
+
+  *result = NS_OK;
+}
+
+int TransportLayerPrsock::SendPacket(const unsigned char *data, size_t len) {
+  MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "SendPacket(" << len << ")");
+  if (state_ != TS_OPEN) {
+    MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Can't send packet on closed interface");
+    return TE_INTERNAL;
+  }
+
+  int32_t status;
+  status = PR_Write(fd_, data, len);
+  if (status >= 0) {
+    MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Wrote " << len << " bytes");
+    return status;
+  }
+
+  PRErrorCode err = PR_GetError();
+  if (err == PR_WOULD_BLOCK_ERROR) {
+    MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Write blocked");
+    return TE_WOULDBLOCK;
+  }
+
+
+  MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Write error; channel closed");
+  TL_SET_STATE(TS_ERROR);
+  return TE_ERROR;
+}
+
+void TransportLayerPrsock::OnSocketReady(PRFileDesc *fd, int16_t outflags) {
+  if (!(outflags & PR_POLL_READ)) {
+    return;
+  }
+
+  MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "OnSocketReady(flags=" << outflags << ")");
+
+  unsigned char buf[1600];
+  int32_t rv = PR_Read(fd, buf, sizeof(buf));
+
+  if (rv > 0) {
+    // Successful read
+    MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Read " << rv << " bytes");
+    SignalPacketReceived(this, buf, rv);
+  } else if (rv == 0) {
+    MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Read 0 bytes; channel closed");
+    TL_SET_STATE(TS_CLOSED);
+  } else {
+    PRErrorCode err = PR_GetError();
+
+    if (err != PR_WOULD_BLOCK_ERROR) {
+      MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Read error; channel closed");
+      TL_SET_STATE(TS_ERROR);
+    }
+  }
+}
+
+NS_IMPL_ISUPPORTS0(TransportLayerPrsock::SocketHandler)
+}  // close namespace
-- 
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