144 líneas
4.7 KiB
C
144 líneas
4.7 KiB
C
#ifndef cmUdpNet_h
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#define cmUdpNet_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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A cmUdpNet is a wrapper around a single cmUdpPort. This object
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maintains an array of remote nodes which map application defined
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node label/id's to IP address/port. This allows the application
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to communicate in terms of its own id scheme without having to
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consider the IP addr/port of the remote nodes.
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*/
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enum
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{
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kOkUnRC = cmOkRC,
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kDuplicateNodeLabelUnRC,
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kDuplicateNodeIdUnRC,
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kUdpPortFailUnRC,
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kInvalidNodeLabelUnRC,
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kNodeNotFoundUnRC,
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kInvalidNodeAddrUnRC,
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kSendFailUnRC,
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kGetDataFailUnRC,
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kJsonFailUnRC
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};
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typedef cmRC_t cmUnRC_t;
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typedef cmHandle_t cmUdpNetH_t;
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extern cmUdpNetH_t cmUdpNetNullHandle;
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typedef void (*cmUdpNetCallback_t)( void* cbArg, cmUdpNetH_t h, const char* data, unsigned dataByteCnt, unsigned remoteNodeId );
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// Allocate a UDP net manager. To use the manager one of the
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// initialization functions must be used configure it.
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cmUnRC_t cmUdpNetAlloc( cmCtx_t* ctx, cmUdpNetH_t* hp );
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// Allocate and initialize a UDP network manager from
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// a JSON script. This function is a simple wrapper for
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// calls to cmUdpNetAlloc(), cmUdpNetInitJson(), and
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// cmUdpNetEnableListen(h,listenFl).
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enum { kListenUnFl=0x01, kNetOptionalUnFl=0x02 };
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cmUnRC_t cmUdpNetAllocJson(
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cmCtx_t* ctx,
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cmUdpNetH_t* hp,
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cmJsonH_t jsH,
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cmUdpNetCallback_t cbFunc,
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void* cbArg,
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unsigned flags);
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// Release a UDP network manager and any resources it may hold.
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cmUnRC_t cmUdpNetFree( cmUdpNetH_t* hp );
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// Initialize a UDP net using a previously allocated handle
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// The node information (nodeLabel,nodeId,nodeSocketPort) refers
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// to the local node. The callback information (cbFunc,cbArg)
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// are used during cmUdpNetReceive() to receive incoming
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// information from the local node.
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cmUnRC_t cmUdpNetInit(
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cmUdpNetH_t h,
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const cmChar_t* nodeLabel,
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unsigned nodeId,
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cmUdpPort_t nodeSocketPort,
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cmUdpNetCallback_t cbFunc,
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void* cbArg,
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unsigned recvBufByteCnt,
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unsigned socketRecvTimeOutMs );
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// Initialize a UDP net and register remote nodes using a JSON resource.
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cmUnRC_t cmUdpNetInitJson(
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cmUdpNetH_t h,
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cmJsonH_t jsH,
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cmUdpNetCallback_t cbFunc,
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void* cbArg );
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// Return true if the if the network has been initialized.
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bool cmUdpNetIsInitialized( cmUdpNetH_t h );
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// Finalize a UDP net. This releases any resources allocated
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// via one of the above 'init' functions.
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cmUnRC_t cmUdpNetFinal( cmUdpNetH_t h );
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// Enable/disable the networks listening port. While in
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// 'listening' mode the network internally queue's all arriving
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// messages. Messages are then forwarded to the client via
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// calls to cmUdpNetReceive().
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cmUnRC_t cmUdpNetEnableListen( cmUdpNetH_t h, bool enableFl );
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// Return true if the handle is valid.
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bool cmUdpNetIsValid( cmUdpNetH_t h );
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unsigned cmUdpNetLocalNodeId( cmUdpNetH_t h );
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const cmChar_t* cmUdpNetLocalNodeLabel( cmUdpNetH_t h );
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// Return the node id associated with a node label or 'cmInvalidId' if the
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// label is not found.
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unsigned cmUdpNetNodeLabelToId( cmUdpNetH_t h, const cmChar_t* label );
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// Return the node label associated with a node id or NULL if the id
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// is not found.
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const cmChar_t* cmUdpNetNodeIdToLabel( cmUdpNetH_t h, unsigned id );
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// Get the total count of nodes on the network. This count includes the local node.
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unsigned cmUdpNetNodeCount( cmUdpNetH_t h );
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// Return the node id of each network node.
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unsigned cmUdpNetNodeId( cmUdpNetH_t h, unsigned nodeIdx );
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// Register a remote node.
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cmUnRC_t cmUdpNetRegisterRemote(
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cmUdpNetH_t h,
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const cmChar_t* remoteNodeLabel,
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unsigned remoteNodeId,
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const char* remoteNodeSockAddr,
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cmUdpPort_t remoteNodePort );
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// Send a message to a remote network node.
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cmUnRC_t cmUdpNetSendById( cmUdpNetH_t h, unsigned remoteNodeId, const void* data, unsigned dataByteCnt );
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cmUnRC_t cmUdpNetSendByLabel( cmUdpNetH_t h, const cmChar_t* remoteNodeLabel, const void* data, unsigned dataByteCnt );
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// Transmit any waiting incoming messages to the client via the
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// cmUdpNetCallback_t callback function provided
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// cmUdpNetInit().
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// On input *msgCntPtr should hold the max. number of
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// messages to receive or NULL to receive all available.
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// On return *msgCntPtr is set to the actual number of
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// messages received.
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cmUnRC_t cmUdpNetReceive( cmUdpNetH_t h, unsigned* msgCntPtr );
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cmUnRC_t cmUdpNetPrintNodes( cmUdpNetH_t h, cmRpt_t* rpt );
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void cmUdpNetReport( cmUdpNetH_t h, cmRpt_t* rpt );
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cmRC_t cmUdpNetTest( cmCtx_t* ctx, int argc, const char* argv[] );
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#ifdef __cplusplus
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}
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#endif
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#endif
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