/** * @file Sender exmple */#include <stdio.h>/* Include header files required in any SyncML session */#include <sml.h>#include <smldef.h>#include <smldtd.h>#include <xpt.h>#include "builder_wrapper.h"/** * Send the SyncML document to the transport layer * * @param id instance ID * @return return value of xptSendData * @see xptSendData */Ret_t mySendData(InstanceID_t id, XptServiceID_t serviceID){    XptCommunicationID_t conn = 0;    MemPtr_t readBuffer = NULL;    MemSize_t bytesRead = 0;    size_t bytesSent = 0;    XptCommunicationInfo_t docInfo;    /* Lock the workspace for reading the assembled SyncML document */    smlLockReadBuffer(id, &readBuffer, &bytesRead);    C(xptOpenCommunication(serviceID, XPT_REQUEST_SENDER, &conn));    C(xptBeginExchange(conn));    docInfo.cbSize = sizeof(docInfo);    docInfo.cbLength = bytesRead;    docInfo.auth = NULL;    docInfo.hmacInfo = NULL;    strcpy(docInfo.mimeType, "application/vnd.syncml+xml");    strcpy(docInfo.docName, "sync");    C(xptSetDocumentInfo(conn, &docInfo));    /* Pass data (the SyncML document in the buffer) to transport layer */    C(xptSendData(conn, readBuffer, bytesRead, &bytesSent));    C(xptSendComplete(conn));    printf("Sent Data = '%s'\n", readBuffer);    /* Unlock the workspace so the Toolkit controls it again */    C(smlUnlockReadBuffer(id, bytesSent));    C(xptGetDocumentInfo(conn, &docInfo));    /* Receive zero-byte response from transport binding */    {        size_t bytesReceived = 0;        char receiveBuf[10000 + 1] = "";        /* NOTE: Should receive at least more than one data */        C(xptReceiveData(conn, receiveBuf, 1, &bytesReceived));    }    C(xptEndExchange(conn));    C(xptCloseCommunication(conn));    return SML_ERR_OK;}int main(void){    InstanceID_t id;    XptServiceID_t serviceID;    const struct XptProtocolInfo *xptProtocolInfo;    /* --- Initialize SyncML reference toolkit --- */    /* Initialize SyncML Reference Toolkit */    C(myInit());    /* Initialize the SyncML instance */    C(myInitInstance(&id));    /* --- Start building SyncML document --- */    /* Start a new message using the syncHdr proto element */    C(myStartMessage(id));    /* Continue adding SyncML commands to the workspace. The proto element       structures holding the parameters associated with each command       need to be allocated and set to appropriate values before usage. */    /* Start sync cmd */    C(myStartSync(id));    /* Start add cmd */    C(myAddCmd(id));    /* End the sync block */    C(myEndSync(id));    /* --- End message --- */    C(myEndMessage(id));    /* --- Send the SyncML document --- */    C(xptGetProtocol("HTTP", &xptProtocolInfo));    C(xptSelectProtocol(xptProtocolInfo->id,                        "HOST=127.0.0.1:8080", XPT_CLIENT, &serviceID));    C(mySendData(id, serviceID));    C(xptDeselectProtocol(serviceID));    /* --- Close SyncML instance and Toolkit session --- */    C(myTerminateInstance(id));    C(myTerminate());    return 0;}