1 files changed, 0 insertions, 485 deletions

diff --git a/grpc/src/core/lib/iomgr/tcp_server_custom.cc b/grpc/src/core/lib/iomgr/tcp_server_custom.cc
deleted file mode 100644
index fff75453..00000000
--- a/grpc/src/core/lib/iomgr/tcp_server_custom.cc
+++ /dev/null
@@ -1,485 +0,0 @@
-/*
- *
- * Copyright 2018 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-#include <grpc/support/port_platform.h>
-
-#include "src/core/lib/iomgr/port.h"
-
-#include <assert.h>
-#include <string.h>
-
-#include <string>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-
-#include "src/core/lib/address_utils/sockaddr_utils.h"
-#include "src/core/lib/channel/channel_args.h"
-#include "src/core/lib/iomgr/error.h"
-#include "src/core/lib/iomgr/exec_ctx.h"
-#include "src/core/lib/iomgr/iomgr_custom.h"
-#include "src/core/lib/iomgr/sockaddr.h"
-#include "src/core/lib/iomgr/tcp_custom.h"
-#include "src/core/lib/iomgr/tcp_server.h"
-
-extern grpc_core::TraceFlag grpc_tcp_trace;
-
-extern grpc_socket_vtable* grpc_custom_socket_vtable;
-
-/* one listening port */
-struct grpc_tcp_listener {
-  grpc_tcp_server* server;
-  unsigned port_index;
-  int port;
-
-  grpc_custom_socket* socket;
-
-  /* linked list */
-  struct grpc_tcp_listener* next;
-
-  bool closed;
-};
-
-struct grpc_tcp_server {
-  gpr_refcount refs;
-
-  /* Called whenever accept() succeeds on a server port. */
-  grpc_tcp_server_cb on_accept_cb;
-  void* on_accept_cb_arg;
-
-  int open_ports;
-
-  /* linked list of server ports */
-  grpc_tcp_listener* head;
-  grpc_tcp_listener* tail;
-
-  /* List of closures passed to shutdown_starting_add(). */
-  grpc_closure_list shutdown_starting;
-
-  /* shutdown callback */
-  grpc_closure* shutdown_complete;
-
-  bool shutdown;
-  bool so_reuseport;
-
-  grpc_resource_quota* resource_quota;
-};
-
-static grpc_error_handle tcp_server_create(grpc_closure* shutdown_complete,
-                                           const grpc_channel_args* args,
-                                           grpc_tcp_server** server) {
-  grpc_tcp_server* s =
-      static_cast<grpc_tcp_server*>(gpr_malloc(sizeof(grpc_tcp_server)));
-  // Let the implementation decide if so_reuseport can be enabled or not.
-  s->so_reuseport = true;
-  s->resource_quota = grpc_resource_quota_create(nullptr);
-  for (size_t i = 0; i < (args == nullptr ? 0 : args->num_args); i++) {
-    if (!grpc_channel_args_find_bool(args, GRPC_ARG_ALLOW_REUSEPORT, true)) {
-      s->so_reuseport = false;
-    }
-    if (0 == strcmp(GRPC_ARG_RESOURCE_QUOTA, args->args[i].key)) {
-      if (args->args[i].type == GRPC_ARG_POINTER) {
-        grpc_resource_quota_unref_internal(s->resource_quota);
-        s->resource_quota = grpc_resource_quota_ref_internal(
-            static_cast<grpc_resource_quota*>(args->args[i].value.pointer.p));
-      } else {
-        grpc_resource_quota_unref_internal(s->resource_quota);
-        gpr_free(s);
-        return GRPC_ERROR_CREATE_FROM_STATIC_STRING(
-            GRPC_ARG_RESOURCE_QUOTA " must be a pointer to a buffer pool");
-      }
-    }
-  }
-  gpr_ref_init(&s->refs, 1);
-  s->on_accept_cb = nullptr;
-  s->on_accept_cb_arg = nullptr;
-  s->open_ports = 0;
-  s->head = nullptr;
-  s->tail = nullptr;
-  s->shutdown_starting.head = nullptr;
-  s->shutdown_starting.tail = nullptr;
-  s->shutdown_complete = shutdown_complete;
-  s->shutdown = false;
-  *server = s;
-  return GRPC_ERROR_NONE;
-}
-
-static grpc_tcp_server* tcp_server_ref(grpc_tcp_server* s) {
-  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
-  gpr_ref(&s->refs);
-  return s;
-}
-
-static void tcp_server_shutdown_starting_add(grpc_tcp_server* s,
-                                             grpc_closure* shutdown_starting) {
-  grpc_closure_list_append(&s->shutdown_starting, shutdown_starting,
-                           GRPC_ERROR_NONE);
-}
-
-static void finish_shutdown(grpc_tcp_server* s) {
-  GPR_ASSERT(s->shutdown);
-  if (s->shutdown_complete != nullptr) {
-    grpc_core::ExecCtx::Run(DEBUG_LOCATION, s->shutdown_complete,
-                            GRPC_ERROR_NONE);
-  }
-
-  while (s->head) {
-    grpc_tcp_listener* sp = s->head;
-    s->head = sp->next;
-    sp->next = nullptr;
-    gpr_free(sp);
-  }
-  grpc_resource_quota_unref_internal(s->resource_quota);
-  gpr_free(s);
-}
-
-static void custom_close_callback(grpc_custom_socket* socket) {
-  grpc_tcp_listener* sp = socket->listener;
-  if (sp) {
-    grpc_core::ExecCtx exec_ctx;
-    sp->server->open_ports--;
-    if (sp->server->open_ports == 0 && sp->server->shutdown) {
-      finish_shutdown(sp->server);
-    }
-  }
-  socket->refs--;
-  if (socket->refs == 0) {
-    grpc_custom_socket_vtable->destroy(socket);
-    gpr_free(socket);
-  }
-}
-
-void grpc_custom_close_server_callback(grpc_tcp_listener* listener) {
-  if (listener) {
-    grpc_core::ExecCtx exec_ctx;
-    listener->server->open_ports--;
-    if (listener->server->open_ports == 0 && listener->server->shutdown) {
-      finish_shutdown(listener->server);
-    }
-  }
-}
-
-static void close_listener(grpc_tcp_listener* sp) {
-  grpc_custom_socket* socket = sp->socket;
-  if (!sp->closed) {
-    sp->closed = true;
-    grpc_custom_socket_vtable->close(socket, custom_close_callback);
-  }
-}
-
-static void tcp_server_destroy(grpc_tcp_server* s) {
-  int immediately_done = 0;
-  grpc_tcp_listener* sp;
-
-  GPR_ASSERT(!s->shutdown);
-  s->shutdown = true;
-
-  if (s->open_ports == 0) {
-    immediately_done = 1;
-  }
-  for (sp = s->head; sp; sp = sp->next) {
-    close_listener(sp);
-  }
-
-  if (immediately_done) {
-    finish_shutdown(s);
-  }
-}
-
-static void tcp_server_unref(grpc_tcp_server* s) {
-  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
-  if (gpr_unref(&s->refs)) {
-    /* Complete shutdown_starting work before destroying. */
-    grpc_core::ExecCtx exec_ctx;
-    grpc_core::ExecCtx::RunList(DEBUG_LOCATION, &s->shutdown_starting);
-    grpc_core::ExecCtx::Get()->Flush();
-    tcp_server_destroy(s);
-  }
-}
-
-static void finish_accept(grpc_tcp_listener* sp, grpc_custom_socket* socket) {
-  grpc_tcp_server_acceptor* acceptor =
-      static_cast<grpc_tcp_server_acceptor*>(gpr_malloc(sizeof(*acceptor)));
-  grpc_endpoint* ep = nullptr;
-  grpc_resolved_address peer_name;
-  std::string peer_name_string;
-  grpc_error_handle err;
-
-  memset(&peer_name, 0, sizeof(grpc_resolved_address));
-  peer_name.len = GRPC_MAX_SOCKADDR_SIZE;
-  err = grpc_custom_socket_vtable->getpeername(
-      socket, reinterpret_cast<grpc_sockaddr*>(&peer_name.addr),
-      reinterpret_cast<int*>(&peer_name.len));
-  if (err == GRPC_ERROR_NONE) {
-    peer_name_string = grpc_sockaddr_to_uri(&peer_name);
-  } else {
-    GRPC_LOG_IF_ERROR("getpeername error", err);
-    GRPC_ERROR_UNREF(err);
-  }
-  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
-    gpr_log(GPR_INFO, "SERVER_CONNECT: %p accepted connection: %s", sp->server,
-            peer_name_string.c_str());
-  }
-  ep = custom_tcp_endpoint_create(socket, sp->server->resource_quota,
-                                  peer_name_string.c_str());
-  acceptor->from_server = sp->server;
-  acceptor->port_index = sp->port_index;
-  acceptor->fd_index = 0;
-  acceptor->external_connection = false;
-  sp->server->on_accept_cb(sp->server->on_accept_cb_arg, ep, nullptr, acceptor);
-}
-
-static void custom_accept_callback(grpc_custom_socket* socket,
-                                   grpc_custom_socket* client,
-                                   grpc_error_handle error);
-
-static void custom_accept_callback(grpc_custom_socket* socket,
-                                   grpc_custom_socket* client,
-                                   grpc_error_handle error) {
-  grpc_core::ApplicationCallbackExecCtx callback_exec_ctx;
-  grpc_core::ExecCtx exec_ctx;
-  grpc_tcp_listener* sp = socket->listener;
-  if (error != GRPC_ERROR_NONE) {
-    if (!sp->closed) {
-      gpr_log(GPR_ERROR, "Accept failed: %s",
-              grpc_error_std_string(error).c_str());
-    }
-    gpr_free(client);
-    GRPC_ERROR_UNREF(error);
-    return;
-  }
-  finish_accept(sp, client);
-  if (!sp->closed) {
-    grpc_custom_socket* new_socket = static_cast<grpc_custom_socket*>(
-        gpr_malloc(sizeof(grpc_custom_socket)));
-    new_socket->endpoint = nullptr;
-    new_socket->listener = nullptr;
-    new_socket->connector = nullptr;
-    new_socket->refs = 1;
-    grpc_custom_socket_vtable->accept(sp->socket, new_socket,
-                                      custom_accept_callback);
-  }
-}
-
-static grpc_error_handle add_socket_to_server(grpc_tcp_server* s,
-                                              grpc_custom_socket* socket,
-                                              const grpc_resolved_address* addr,
-                                              unsigned port_index,
-                                              grpc_tcp_listener** listener) {
-  grpc_tcp_listener* sp = nullptr;
-  int port = -1;
-  grpc_error_handle error;
-  grpc_resolved_address sockname_temp;
-
-  // NOTE(lidiz) The last argument is "flags" which is unused by other
-  // implementations. Python IO managers uses it to specify SO_REUSEPORT.
-  int flags = 0;
-  if (s->so_reuseport) {
-    flags |= GRPC_CUSTOM_SOCKET_OPT_SO_REUSEPORT;
-  }
-
-  error = grpc_custom_socket_vtable->bind(
-      socket, reinterpret_cast<grpc_sockaddr*>(const_cast<char*>(addr->addr)),
-      addr->len, flags);
-  if (error != GRPC_ERROR_NONE) {
-    return error;
-  }
-
-  error = grpc_custom_socket_vtable->listen(socket);
-  if (error != GRPC_ERROR_NONE) {
-    return error;
-  }
-
-  sockname_temp.len = GRPC_MAX_SOCKADDR_SIZE;
-  error = grpc_custom_socket_vtable->getsockname(
-      socket, reinterpret_cast<grpc_sockaddr*>(&sockname_temp.addr),
-      reinterpret_cast<int*>(&sockname_temp.len));
-  if (error != GRPC_ERROR_NONE) {
-    return error;
-  }
-
-  port = grpc_sockaddr_get_port(&sockname_temp);
-
-  GPR_ASSERT(port >= 0);
-  GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
-  sp = static_cast<grpc_tcp_listener*>(gpr_zalloc(sizeof(grpc_tcp_listener)));
-  sp->next = nullptr;
-  if (s->head == nullptr) {
-    s->head = sp;
-  } else {
-    s->tail->next = sp;
-  }
-  s->tail = sp;
-  sp->server = s;
-  sp->socket = socket;
-  sp->port = port;
-  sp->port_index = port_index;
-  sp->closed = false;
-  s->open_ports++;
-  *listener = sp;
-
-  return GRPC_ERROR_NONE;
-}
-
-static grpc_error_handle tcp_server_add_port(grpc_tcp_server* s,
-                                             const grpc_resolved_address* addr,
-                                             int* port) {
-  // This function is mostly copied from tcp_server_windows.c
-  grpc_tcp_listener* sp = nullptr;
-  grpc_custom_socket* socket;
-  grpc_resolved_address addr6_v4mapped;
-  grpc_resolved_address wildcard;
-  grpc_resolved_address* allocated_addr = nullptr;
-  grpc_resolved_address sockname_temp;
-  unsigned port_index = 0;
-  grpc_error_handle error = GRPC_ERROR_NONE;
-  int family;
-
-  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
-
-  if (s->tail != nullptr) {
-    port_index = s->tail->port_index + 1;
-  }
-
-  /* Check if this is a wildcard port, and if so, try to keep the port the same
-     as some previously created listener. */
-  if (grpc_sockaddr_get_port(addr) == 0) {
-    for (sp = s->head; sp; sp = sp->next) {
-      socket = sp->socket;
-      sockname_temp.len = GRPC_MAX_SOCKADDR_SIZE;
-      if (nullptr == grpc_custom_socket_vtable->getsockname(
-                         socket,
-                         reinterpret_cast<grpc_sockaddr*>(&sockname_temp.addr),
-                         reinterpret_cast<int*>(&sockname_temp.len))) {
-        *port = grpc_sockaddr_get_port(&sockname_temp);
-        if (*port > 0) {
-          allocated_addr = static_cast<grpc_resolved_address*>(
-              gpr_malloc(sizeof(grpc_resolved_address)));
-          memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
-          grpc_sockaddr_set_port(allocated_addr, *port);
-          addr = allocated_addr;
-          break;
-        }
-      }
-    }
-  }
-
-  if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
-    addr = &addr6_v4mapped;
-  }
-
-  /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
-  if (grpc_sockaddr_is_wildcard(addr, port)) {
-    grpc_sockaddr_make_wildcard6(*port, &wildcard);
-
-    addr = &wildcard;
-  }
-
-  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
-    gpr_log(GPR_INFO, "SERVER %p add_port %s error=%s", s,
-            grpc_sockaddr_to_string(addr, false).c_str(),
-            grpc_error_std_string(error).c_str());
-  }
-
-  family = grpc_sockaddr_get_family(addr);
-  socket =
-      static_cast<grpc_custom_socket*>(gpr_malloc(sizeof(grpc_custom_socket)));
-  socket->refs = 1;
-  socket->endpoint = nullptr;
-  socket->listener = nullptr;
-  socket->connector = nullptr;
-  error = grpc_custom_socket_vtable->init(socket, family);
-
-  if (error == GRPC_ERROR_NONE) {
-    error = add_socket_to_server(s, socket, addr, port_index, &sp);
-  }
-  gpr_free(allocated_addr);
-
-  if (error != GRPC_ERROR_NONE) {
-    grpc_error_handle error_out =
-        GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
-            "Failed to add port to server", &error, 1);
-    GRPC_ERROR_UNREF(error);
-    error = error_out;
-    *port = -1;
-  } else {
-    GPR_ASSERT(sp != nullptr);
-    *port = sp->port;
-  }
-  socket->listener = sp;
-  return error;
-}
-
-static void tcp_server_start(grpc_tcp_server* server,
-                             const std::vector<grpc_pollset*>* /*pollsets*/,
-                             grpc_tcp_server_cb on_accept_cb, void* cb_arg) {
-  grpc_tcp_listener* sp;
-  GRPC_CUSTOM_IOMGR_ASSERT_SAME_THREAD();
-  if (GRPC_TRACE_FLAG_ENABLED(grpc_tcp_trace)) {
-    gpr_log(GPR_INFO, "SERVER_START %p", server);
-  }
-  GPR_ASSERT(on_accept_cb);
-  GPR_ASSERT(!server->on_accept_cb);
-  server->on_accept_cb = on_accept_cb;
-  server->on_accept_cb_arg = cb_arg;
-  for (sp = server->head; sp; sp = sp->next) {
-    grpc_custom_socket* new_socket = static_cast<grpc_custom_socket*>(
-        gpr_malloc(sizeof(grpc_custom_socket)));
-    new_socket->endpoint = nullptr;
-    new_socket->listener = nullptr;
-    new_socket->connector = nullptr;
-    new_socket->refs = 1;
-    grpc_custom_socket_vtable->accept(sp->socket, new_socket,
-                                      custom_accept_callback);
-  }
-}
-
-static unsigned tcp_server_port_fd_count(grpc_tcp_server* /*s*/,
-                                         unsigned /*port_index*/) {
-  return 0;
-}
-
-static int tcp_server_port_fd(grpc_tcp_server* /*s*/, unsigned /*port_index*/,
-                              unsigned /*fd_index*/) {
-  return -1;
-}
-
-static void tcp_server_shutdown_listeners(grpc_tcp_server* s) {
-  for (grpc_tcp_listener* sp = s->head; sp; sp = sp->next) {
-    if (!sp->closed) {
-      sp->closed = true;
-      grpc_custom_socket_vtable->close(sp->socket, custom_close_callback);
-    }
-  }
-}
-
-static grpc_core::TcpServerFdHandler* tcp_server_create_fd_handler(
-    grpc_tcp_server* /*s*/) {
-  return nullptr;
-}
-
-grpc_tcp_server_vtable custom_tcp_server_vtable = {
-    tcp_server_create,        tcp_server_start,
-    tcp_server_add_port,      tcp_server_create_fd_handler,
-    tcp_server_port_fd_count, tcp_server_port_fd,
-    tcp_server_ref,           tcp_server_shutdown_starting_add,
-    tcp_server_unref,         tcp_server_shutdown_listeners};
-
-#ifdef GRPC_UV_TEST
-grpc_tcp_server_vtable* default_tcp_server_vtable = &custom_tcp_server_vtable;
-#endif