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-rw-r--r--src/network/core/config.h8
-rw-r--r--src/network/core/packet.cpp2
-rw-r--r--src/network/core/packet.h2
-rw-r--r--src/network/core/tcp.cpp2
-rw-r--r--src/network/core/udp.cpp4
-rw-r--r--src/network/network_admin.cpp6
-rw-r--r--src/network/network_content.cpp8
-rw-r--r--src/network/network_udp.cpp6
8 files changed, 20 insertions, 18 deletions
diff --git a/src/network/core/config.h b/src/network/core/config.h
index 1483419ea..572b4720d 100644
--- a/src/network/core/config.h
+++ b/src/network/core/config.h
@@ -30,7 +30,9 @@ static const uint16 NETWORK_DEFAULT_PORT = 3979; ///< The defau
static const uint16 NETWORK_ADMIN_PORT = 3977; ///< The default port for admin network
static const uint16 NETWORK_DEFAULT_DEBUGLOG_PORT = 3982; ///< The default port debug-log is sent to (TCP)
-static const uint16 SEND_MTU = 1460; ///< Number of bytes we can pack in a single packet
+static const uint16 UDP_MTU = 1460; ///< Number of bytes we can pack in a single UDP packet
+static const uint16 TCP_MTU = 1460; ///< Number of bytes we can pack in a single TCP packet
+static const uint16 COMPAT_MTU = 1460; ///< Number of bytes we can pack in a single packet for backward compatibility
static const byte NETWORK_GAME_ADMIN_VERSION = 1; ///< What version of the admin network do we use?
static const byte NETWORK_GAME_INFO_VERSION = 4; ///< What version of game-info do we use?
@@ -46,14 +48,14 @@ static const uint NETWORK_PASSWORD_LENGTH = 33; ///< The maxim
static const uint NETWORK_CLIENTS_LENGTH = 200; ///< The maximum length for the list of clients that controls a company, in bytes including '\0'
static const uint NETWORK_CLIENT_NAME_LENGTH = 25; ///< The maximum length of a client's name, in bytes including '\0'
static const uint NETWORK_RCONCOMMAND_LENGTH = 500; ///< The maximum length of a rconsole command, in bytes including '\0'
-static const uint NETWORK_GAMESCRIPT_JSON_LENGTH = SEND_MTU - 3; ///< The maximum length of a gamescript json string, in bytes including '\0'. Must not be longer than SEND_MTU including header (3 bytes)
+static const uint NETWORK_GAMESCRIPT_JSON_LENGTH = COMPAT_MTU-3; ///< The maximum length of a gamescript json string, in bytes including '\0'. Must not be longer than COMPAT_MTU including header (3 bytes)
static const uint NETWORK_CHAT_LENGTH = 900; ///< The maximum length of a chat message, in bytes including '\0'
static const uint NETWORK_GRF_NAME_LENGTH = 80; ///< Maximum length of the name of a GRF
/**
* Maximum number of GRFs that can be sent.
- * This limit is reached when PACKET_UDP_SERVER_RESPONSE reaches the maximum size of SEND_MTU bytes.
+ * This limit is reached when PACKET_UDP_SERVER_RESPONSE reaches the maximum size of UDP_MTU bytes.
*/
static const uint NETWORK_MAX_GRF_COUNT = 62;
diff --git a/src/network/core/packet.cpp b/src/network/core/packet.cpp
index 39531c0a4..40e664055 100644
--- a/src/network/core/packet.cpp
+++ b/src/network/core/packet.cpp
@@ -39,7 +39,7 @@ Packet::Packet(NetworkSocketHandler *cs, size_t limit, size_t initial_read_size)
/**
* Creates a packet to send
* @param type The type of the packet to send
- * @param limit The maximum number of bytes the packet may have. Default is SEND_MTU.
+ * @param limit The maximum number of bytes the packet may have. Default is COMPAT_MTU.
* Be careful of compatibility with older clients/servers when changing
* the limit as it might break things if the other side is not expecting
* much larger packets than what they support.
diff --git a/src/network/core/packet.h b/src/network/core/packet.h
index db051005c..d55dad316 100644
--- a/src/network/core/packet.h
+++ b/src/network/core/packet.h
@@ -56,7 +56,7 @@ private:
public:
Packet(NetworkSocketHandler *cs, size_t limit, size_t initial_read_size = sizeof(PacketSize));
- Packet(PacketType type, size_t limit = SEND_MTU);
+ Packet(PacketType type, size_t limit = COMPAT_MTU);
static void AddToQueue(Packet **queue, Packet *packet);
static Packet *PopFromQueue(Packet **queue);
diff --git a/src/network/core/tcp.cpp b/src/network/core/tcp.cpp
index be70efdd2..72e66a0b5 100644
--- a/src/network/core/tcp.cpp
+++ b/src/network/core/tcp.cpp
@@ -126,7 +126,7 @@ Packet *NetworkTCPSocketHandler::ReceivePacket()
if (!this->IsConnected()) return nullptr;
if (this->packet_recv == nullptr) {
- this->packet_recv = new Packet(this, SEND_MTU);
+ this->packet_recv = new Packet(this, TCP_MTU);
}
Packet *p = this->packet_recv;
diff --git a/src/network/core/udp.cpp b/src/network/core/udp.cpp
index 8872fa295..e8299f7b6 100644
--- a/src/network/core/udp.cpp
+++ b/src/network/core/udp.cpp
@@ -119,8 +119,8 @@ void NetworkUDPSocketHandler::ReceivePackets()
struct sockaddr_storage client_addr;
memset(&client_addr, 0, sizeof(client_addr));
- /* The limit is SEND_MTU, but also allocate that much as we need to read the whole packet in one go. */
- Packet p(this, SEND_MTU, SEND_MTU);
+ /* The limit is UDP_MTU, but also allocate that much as we need to read the whole packet in one go. */
+ Packet p(this, UDP_MTU, UDP_MTU);
socklen_t client_len = sizeof(client_addr);
/* Try to receive anything */
diff --git a/src/network/network_admin.cpp b/src/network/network_admin.cpp
index 057ad5988..1b86c3e56 100644
--- a/src/network/network_admin.cpp
+++ b/src/network/network_admin.cpp
@@ -560,8 +560,8 @@ NetworkRecvStatus ServerNetworkAdminSocketHandler::SendConsole(const char *origi
/* If the length of both strings, plus the 2 '\0' terminations and 3 bytes of the packet
* are bigger than the MTU, just ignore the message. Better safe than sorry. It should
* never occur though as the longest strings are chat messages, which are still 30%
- * smaller than SEND_MTU. */
- if (strlen(origin) + strlen(string) + 2 + 3 >= SEND_MTU) return NETWORK_RECV_STATUS_OKAY;
+ * smaller than COMPAT_MTU. */
+ if (strlen(origin) + strlen(string) + 2 + 3 >= COMPAT_MTU) return NETWORK_RECV_STATUS_OKAY;
Packet *p = new Packet(ADMIN_PACKET_SERVER_CONSOLE);
@@ -610,7 +610,7 @@ NetworkRecvStatus ServerNetworkAdminSocketHandler::SendCmdNames()
for (uint i = 0; i < CMD_END; i++) {
const char *cmdname = GetCommandName(i);
- /* Should SEND_MTU be exceeded, start a new packet
+ /* Should COMPAT_MTU be exceeded, start a new packet
* (magic 5: 1 bool "more data" and one uint16 "command id", one
* byte for string '\0' termination and 1 bool "no more data" */
if (p->CanWriteToPacket(strlen(cmdname) + 5)) {
diff --git a/src/network/network_content.cpp b/src/network/network_content.cpp
index 529225235..fb95ff72b 100644
--- a/src/network/network_content.cpp
+++ b/src/network/network_content.cpp
@@ -221,9 +221,9 @@ void ClientNetworkContentSocketHandler::RequestContentList(uint count, const Con
* A packet begins with the packet size and a byte for the type.
* Then this packet adds a uint16 for the count in this packet.
* The rest of the packet can be used for the IDs. */
- uint p_count = std::min<uint>(count, (SEND_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint16)) / sizeof(uint32));
+ uint p_count = std::min<uint>(count, (COMPAT_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint16)) / sizeof(uint32));
- Packet *p = new Packet(PACKET_CONTENT_CLIENT_INFO_ID);
+ Packet *p = new Packet(PACKET_CONTENT_CLIENT_INFO_ID, COMPAT_MTU);
p->Send_uint16(p_count);
for (uint i = 0; i < p_count; i++) {
@@ -248,7 +248,7 @@ void ClientNetworkContentSocketHandler::RequestContentList(ContentVector *cv, bo
this->Connect();
assert(cv->size() < 255);
- assert(cv->size() < (SEND_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint8)) /
+ assert(cv->size() < (COMPAT_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint8)) /
(sizeof(uint8) + sizeof(uint32) + (send_md5sum ? /*sizeof(ContentInfo::md5sum)*/16 : 0)));
Packet *p = new Packet(send_md5sum ? PACKET_CONTENT_CLIENT_INFO_EXTID_MD5 : PACKET_CONTENT_CLIENT_INFO_EXTID);
@@ -363,7 +363,7 @@ void ClientNetworkContentSocketHandler::DownloadSelectedContentFallback(const Co
* A packet begins with the packet size and a byte for the type.
* Then this packet adds a uint16 for the count in this packet.
* The rest of the packet can be used for the IDs. */
- uint p_count = std::min<uint>(count, (SEND_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint16)) / sizeof(uint32));
+ uint p_count = std::min<uint>(count, (COMPAT_MTU - sizeof(PacketSize) - sizeof(byte) - sizeof(uint16)) / sizeof(uint32));
Packet *p = new Packet(PACKET_CONTENT_CLIENT_CONTENT);
p->Send_uint16(p_count);
diff --git a/src/network/network_udp.cpp b/src/network/network_udp.cpp
index aa34515bd..f7db689d4 100644
--- a/src/network/network_udp.cpp
+++ b/src/network/network_udp.cpp
@@ -256,10 +256,10 @@ void ServerNetworkUDPSocketHandler::Receive_CLIENT_DETAIL_INFO(Packet *p, Networ
/**
* A client has requested the names of some NewGRFs.
*
- * Replying this can be tricky as we have a limit of SEND_MTU bytes
+ * Replying this can be tricky as we have a limit of UDP_MTU bytes
* in the reply packet and we can send up to 100 bytes per NewGRF
* (GRF ID, MD5sum and NETWORK_GRF_NAME_LENGTH bytes for the name).
- * As SEND_MTU is _much_ less than 100 * NETWORK_MAX_GRF_COUNT, it
+ * As UDP_MTU is _much_ less than 100 * NETWORK_MAX_GRF_COUNT, it
* could be that a packet overflows. To stop this we only reply
* with the first N NewGRFs so that if the first N + 1 NewGRFs
* would be sent, the packet overflows.
@@ -295,7 +295,7 @@ void ServerNetworkUDPSocketHandler::Receive_CLIENT_GET_NEWGRFS(Packet *p, Networ
* The name could be an empty string, if so take the filename. */
packet_len += sizeof(c.grfid) + sizeof(c.md5sum) +
std::min(strlen(f->GetName()) + 1, (size_t)NETWORK_GRF_NAME_LENGTH);
- if (packet_len > SEND_MTU - 4) { // 4 is 3 byte header + grf count in reply
+ if (packet_len > UDP_MTU - 4) { // 4 is 3 byte header + grf count in reply
break;
}
in_reply[in_reply_count] = f;
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-07-04 11:20:09 +0000