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--><h1 id="communication-service-protocol" tabindex="-1"><a class="header-anchor" href="#communication-service-protocol" aria-hidden="true">#</a> Communication Service protocol</h1><h2 id="thrift-rpc-interface" tabindex="-1"><a class="header-anchor" href="#thrift-rpc-interface" aria-hidden="true">#</a> Thrift rpc interface</h2><h3 id="introduction" tabindex="-1"><a class="header-anchor" href="#introduction" aria-hidden="true">#</a> introduction</h3><p>Thrift is a remote procedure call software framework for the development of extensible and cross-language services. It combines a powerful software stack and code generation engine, In order to build seamlessly integrated and efficient services among programming languages ​​such as C++, Java, Go, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, and OCaml.</p><p>IoTDB server and client use thrift for communication. In actual use, it is recommended to use the native client package provided by IoTDB: Session or Session Pool. If you have special needs, you can also program directly against the RPC interface</p><p>The default IoTDB server uses port 6667 as the RPC communication port, you can modify the configuration item</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>rpc_port=6667
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>to change the default thrift port</p><h3 id="rpc-interface" tabindex="-1"><a class="header-anchor" href="#rpc-interface" aria-hidden="true">#</a> rpc interface</h3><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>// open a session
TSOpenSessionResp openSession(1:TSOpenSessionReq req);
// close a session
TSStatus closeSession(1:TSCloseSessionReq req);
// run an SQL statement in batch
TSExecuteStatementResp executeStatement(1:TSExecuteStatementReq req);
// execute SQL statement in batch
TSStatus executeBatchStatement(1:TSExecuteBatchStatementReq req);
// execute query SQL statement
TSExecuteStatementResp executeQueryStatement(1:TSExecuteStatementReq req);
// execute insert, delete and update SQL statement
TSExecuteStatementResp executeUpdateStatement(1:TSExecuteStatementReq req);
// fetch next query result
TSFetchResultsResp fetchResults(1:TSFetchResultsReq req)
// fetch meta data
TSFetchMetadataResp fetchMetadata(1:TSFetchMetadataReq req)
// cancel a query
TSStatus cancelOperation(1:TSCancelOperationReq req);
// close a query dataset
TSStatus closeOperation(1:TSCloseOperationReq req);
// get time zone
TSGetTimeZoneResp getTimeZone(1:i64 sessionId);
// set time zone
TSStatus setTimeZone(1:TSSetTimeZoneReq req);
// get server&#39;s properties
ServerProperties getProperties();
// CREATE DATABASE
TSStatus setStorageGroup(1:i64 sessionId, 2:string storageGroup);
// create timeseries
TSStatus createTimeseries(1:TSCreateTimeseriesReq req);
// create multi timeseries
TSStatus createMultiTimeseries(1:TSCreateMultiTimeseriesReq req);
// delete timeseries
TSStatus deleteTimeseries(1:i64 sessionId, 2:list&lt;string&gt; path)
// delete sttorage groups
TSStatus deleteStorageGroups(1:i64 sessionId, 2:list&lt;string&gt; storageGroup);
// insert record
TSStatus insertRecord(1:TSInsertRecordReq req);
// insert record in string format
TSStatus insertStringRecord(1:TSInsertStringRecordReq req);
// insert tablet
TSStatus insertTablet(1:TSInsertTabletReq req);
// insert tablets in batch
TSStatus insertTablets(1:TSInsertTabletsReq req);
// insert records in batch
TSStatus insertRecords(1:TSInsertRecordsReq req);
// insert records of one device
TSStatus insertRecordsOfOneDevice(1:TSInsertRecordsOfOneDeviceReq req);
// insert records in batch as string format
TSStatus insertStringRecords(1:TSInsertStringRecordsReq req);
// test the latency of innsert tablet，caution：no data will be inserted, only for test latency
TSStatus testInsertTablet(1:TSInsertTabletReq req);
// test the latency of innsert tablets，caution：no data will be inserted, only for test latency
TSStatus testInsertTablets(1:TSInsertTabletsReq req);
// test the latency of innsert record，caution：no data will be inserted, only for test latency
TSStatus testInsertRecord(1:TSInsertRecordReq req);
// test the latency of innsert record in string format，caution：no data will be inserted, only for test latency
TSStatus testInsertStringRecord(1:TSInsertStringRecordReq req);
// test the latency of innsert records，caution：no data will be inserted, only for test latency
TSStatus testInsertRecords(1:TSInsertRecordsReq req);
// test the latency of innsert records of one device，caution：no data will be inserted, only for test latency
TSStatus testInsertRecordsOfOneDevice(1:TSInsertRecordsOfOneDeviceReq req);
// test the latency of innsert records in string formate，caution：no data will be inserted, only for test latency
TSStatus testInsertStringRecords(1:TSInsertStringRecordsReq req);
// delete data
TSStatus deleteData(1:TSDeleteDataReq req);
// execute raw data query
TSExecuteStatementResp executeRawDataQuery(1:TSRawDataQueryReq req);
// request a statement id from server
i64 requestStatementId(1:i64 sessionId);
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="idl-file-path" tabindex="-1"><a class="header-anchor" href="#idl-file-path" aria-hidden="true">#</a> IDL file path</h3><p>IDL file path is &quot;thrift/src/main/thrift/rpc.thrift&quot; which includes interface and struct</p><h3 id="target-file-path" tabindex="-1"><a class="header-anchor" href="#target-file-path" aria-hidden="true">#</a> target file path</h3><p>We will use thrift compile IDL file in mvn Compilation, in which generate target .class file target file path is &quot;thrift/target/classes/org/apache/iotdb/service/rpc/thrift&quot;</p></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb/edit/master/docs/UserGuide/API/Programming-Thrift.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? 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