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EdmiError edmiRemoteVersion(SdaiServerContext serverContextId,
SdaiClientId clientId,
SdaiInteger *serverVersion,
SdaiInteger *localEdmiVersion,
SdaiString *serverVersionText,
SdaiString *localEdmiVersionText,
SdaiInvocationId *edmiInvocationId);
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Reads the version info of an EDMserver
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or an EDMapplicationServer process from a thin EDMclient. Two versioned modules constitute the EDMserver
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and the EDMapplication server; the server application it self, and the library comprising all the EDMInterface
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/C API functions. For a thin EDMclient to work properly with a Server Room they must be based on a compatible version of
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the EDMInteface
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.
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EDMapplicationServer processes are basically thick EDMclients that are connected to
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the EDMserver
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They are identified by their clientIds which may be determined by a call to the edmiRemoteWhoIsOn function (see the example below). If the clientId argument is set to zero, this function will return version info for the
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EDMserver
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A version is identified by an integer number and a corresponding textual sting. The version info returned from this function might be;
Argument | Return Value |
serverVersion | 20050308 |
localEdmiVersion | 20050308 |
serverVersionText | EXPRESS Data Manager Server Version 4.7.041b Dec 15 2005 |
localEdmiVersionText | EXPRESS Data Manager fat client system - Version 4.7.041b Dec 15 2005 |
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Arguments
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| Type | Name | Comment |
| SdaiServerContext | serverContextId | Context identification, from edmiDefineServerContext |
| SdaiClientId | clientId | The clientId that identifies the EDMapplicationServer process for which to return version info. If this argument is zero, the version info for the _EDMserver_ will be returned |
| SdaiInteger | serverVersion | A variable that will receive an integer number that identifies the version of the EDMserver{_}_ or the EDMapplicationServer. |
| SdaiInteger | localEdmiVersion | A variable that will receive an integer number that identifies the version of the EDMInterface{_}_ library used by the EDMserver{_}_ or the EDMapplicationServer. |
| SdaiString | serverVersionText | A variable that will receive a textual string that identifies the version of the EDMserver{_}_ or the EDMapplicationServer. |
| SdaiString | localEdmiVersionText | A variable that will receive a textual string that identifies the version of the EDMInterface library used by the EDMserver or the EDMapplicationServer. |
| SdaiInvocationId | edmiInvocationId | Currently not used. |
Returns:
A completion code of datatype EdmiError is the returned function value. The completion code has the following values:
Completion code = 0 : Operation successfully performed.
Completion code != 0: Error in operation. Completion code is an _EDMinterface_ error code. Use edmiGetErrorText to get the error text corresponding to the error code.
Example:
/* Check that all the EDMapplicationServers
use the same version of the EDMInterface
as does the EDMserver */
int i;
EdmiError rstat;
SdaiServerContext suContext;
tEdmiWhoIsOnServer *pWhoIsOn;
tEdmiConnection *connect;
SdaiInteger nConnect, nAppServer;
SdaiInteger versionId, edmiVersionId;
SdaiString version, edmiVersion;
SdaiString hostName, clientName;
/* Define Remote Server Context
for the superuser */
rstat = edmiDefineServerContext("SuperUserContext",
"superuser", NULL, "xfx56kl9",
"TCP", "9090", "MyServerHost",
NULL, NULL, NULL, NULL, NULL, &suContext);
/* Get the version info for the EDMserver */
rstat = edmiRemoteVersion(suContext, 0,
&versionId, &edmiVersionId,
&version, &edmiVersion, NULL);
/* We do not need version strings for this */
edmiFree(version);
edmiFree(edmiVersion);
/* Find all connected thick EDMclients */
rstat = edmiRemoteWhoIsOn(suContext, &nConnect, &pWhoIsOn, NULL);
connect = pWhoIsOn->connections;
nAppServer = 0;
for
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Options
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Example
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/* Check that all the EDMapplicationServers use the same version of the EDMInterface as does the EDMserver */ int i; EdmiError rstat; SdaiServerContext suContext; tEdmiWhoIsOnServer *pWhoIsOn; tEdmiConnection *connect; SdaiInteger nConnect, nAppServer; SdaiInteger versionId, edmiVersionId; SdaiString version, edmiVersion; SdaiString hostName, clientName; /* Define Remote Server Context for the superuser */ rstat = edmiDefineServerContext("SuperUserContext", "superuser", NULL, "xfx56kl9", "TCP", "9090", "MyServerHost", NULL, NULL, NULL, NULL, NULL, &suContext); /* Get the version info for the EDMserver */ rstat = edmiRemoteVersion(suContext, 0, &versionId, &edmiVersionId, &version, &edmiVersion, NULL); /* We do not need version strings for this */ edmiFree(version); edmiFree(edmiVersion); /* Find all connected thick EDMclients */ rstat = edmiRemoteWhoIsOn(suContext, &nConnect, &pWhoIsOn, NULL); connect = pWhoIsOn->connections; nAppServer = 0; for (i=0;i<nConnect;i++) { |
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rstat = edmiRemoteGetClientNames(suContext, connect->clientId, |
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&hostName, &clientName, NULL); |
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if (strstr(clientName, "EDMapplicationServer-") && |
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strstr(clientName, " Main Client") ) { |
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SdaiInteger _edmiVersionId; |
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/* Get the version |
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info for the EDMapplicationServer */ rstat = edmiRemoteVersion(suContext, connect->clientId, |
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&versionId, &_edmiVersionId, |
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&version, &edmiVersion, NULL); |
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/* We do not need version strings for this */ |
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edmiFree(version); |
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edmiFree(edmiVersion); |
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/* Compare the EDMInterface library versions */ |
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if (edmiVersionId != _edmiVersionId) { |
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printf("\nWARNING: The EDMapplicationServer"); |
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printf(" with client Id %d", connect->clientId); |
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printf(" running at host %s", hostName); |
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printf(" uses an EDMInterface library with a"); |
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printf(" version number (%d) that does", _edmiVersionId); |
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printf(" not match that of the EDMserver (%d)", edmiVersionId); |
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} } edmiFree(hostName); |
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edmiFree(clientName); |
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}
. . . |
See also
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