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128 lines
3.6 KiB
128 lines
3.6 KiB
/* |
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* Copyright (C) 2015 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#ifndef __ADB_SOCKET_H |
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#define __ADB_SOCKET_H |
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#include <stddef.h> |
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#include <memory> |
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#include "fdevent.h" |
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struct apacket; |
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class atransport; |
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/* An asocket represents one half of a connection between a local and |
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* remote entity. A local asocket is bound to a file descriptor. A |
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* remote asocket is bound to the protocol engine. |
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*/ |
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struct asocket { |
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/* chain pointers for the local/remote list of |
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* asockets that this asocket lives in |
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*/ |
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asocket* next; |
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asocket* prev; |
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/* the unique identifier for this asocket |
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*/ |
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unsigned id; |
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/* flag: set when the socket's peer has closed |
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* but packets are still queued for delivery |
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*/ |
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int closing; |
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// flag: set when the socket failed to write, so the socket will not wait to |
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// write packets and close directly. |
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bool has_write_error; |
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/* flag: quit adbd when both ends close the |
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* local service socket |
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*/ |
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int exit_on_close; |
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// the asocket we are connected to |
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asocket* peer; |
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/* For local asockets, the fde is used to bind |
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* us to our fd event system. For remote asockets |
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* these fields are not used. |
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*/ |
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fdevent fde; |
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int fd; |
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// queue of apackets waiting to be written |
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apacket* pkt_first; |
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apacket* pkt_last; |
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/* enqueue is called by our peer when it has data |
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* for us. It should return 0 if we can accept more |
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* data or 1 if not. If we return 1, we must call |
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* peer->ready() when we once again are ready to |
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* receive data. |
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*/ |
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int (*enqueue)(asocket* s, apacket* pkt); |
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/* ready is called by the peer when it is ready for |
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* us to send data via enqueue again |
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*/ |
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void (*ready)(asocket* s); |
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/* shutdown is called by the peer before it goes away. |
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* the socket should not do any further calls on its peer. |
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* Always followed by a call to close. Optional, i.e. can be NULL. |
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*/ |
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void (*shutdown)(asocket* s); |
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/* close is called by the peer when it has gone away. |
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* we are not allowed to make any further calls on the |
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* peer once our close method is called. |
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*/ |
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void (*close)(asocket* s); |
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/* A socket is bound to atransport */ |
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atransport* transport; |
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size_t get_max_payload() const; |
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#if !ADB_HOST //Debug purpose |
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int ref_cnt; |
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#endif |
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}; |
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asocket *find_local_socket(unsigned local_id, unsigned remote_id); |
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void install_local_socket(asocket *s); |
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void remove_socket(asocket *s); |
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void close_all_sockets(atransport *t); |
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asocket *create_local_socket(int fd); |
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asocket *create_local_service_socket(const char* destination, |
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const atransport* transport); |
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asocket *create_remote_socket(unsigned id, atransport *t); |
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void connect_to_remote(asocket *s, const char *destination); |
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void connect_to_smartsocket(asocket *s); |
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// Internal functions that are only made available here for testing purposes. |
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namespace internal { |
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#if ADB_HOST |
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char* skip_host_serial(char* service); |
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#endif |
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} // namespace internal |
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#endif // __ADB_SOCKET_H
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