Describe the new JSON interface first.
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levlam
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@ -21,85 +21,6 @@
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* The main TDLib interface is asynchronous. To match requests with a corresponding response a field "@extra" can
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* be added to the request object. The corresponding response will have an "@extra" field with exactly the same value.
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*
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* A TDLib client instance can be created through td_json_client_create.
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* Requests then can be sent using td_json_client_send from any thread.
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* New updates and request responses can be received through td_json_client_receive from any thread. This function
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* must not be called simultaneously from two different threads. Also note that all updates and request responses
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* must be applied in the order they were received to ensure consistency.
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* Given this information, it's advisable to call this function from a dedicated thread.
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* Some service TDLib requests can be executed synchronously from any thread by using td_json_client_execute.
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* The TDLib client instance can be destroyed via td_json_client_destroy.
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*
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* General pattern of usage:
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* \code
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* void *client = td_json_client_create();
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* // somehow share the client with other threads, which will be able to send requests via td_json_client_send
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*
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* const double WAIT_TIMEOUT = 10.0; // seconds
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* int is_closed = 0; // should be set to 1, when updateAuthorizationState with authorizationStateClosed is received
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* while (!is_closed) {
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* const char *result = td_json_client_receive(client, WAIT_TIMEOUT);
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* if (result) {
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* // parse the result as JSON object and process it as an incoming update or an answer to a previously sent request
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* }
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* }
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* td_json_client_destroy(client);
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* \endcode
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*/
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#include "td/telegram/tdjson_export.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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* Creates a new instance of TDLib.
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* \return Pointer to the created instance of TDLib.
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*/
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TDJSON_EXPORT void *td_json_client_create();
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/**
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* Sends request to the TDLib client. May be called from any thread.
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* \param[in] client The client.
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* \param[in] request JSON-serialized null-terminated request to TDLib.
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*/
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TDJSON_EXPORT void td_json_client_send(void *client, const char *request);
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/**
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* Receives incoming updates and request responses from the TDLib client. May be called from any thread, but
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* must not be called simultaneously from two different threads.
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* Returned pointer will be deallocated by TDLib during next call to td_json_client_receive or td_json_client_execute
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* in the same thread, so it can't be used after that.
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* \param[in] client The client.
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* \param[in] timeout The maximum number of seconds allowed for this function to wait for new data.
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* \return JSON-serialized null-terminated incoming update or request response. May be NULL if the timeout expires.
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*/
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TDJSON_EXPORT const char *td_json_client_receive(void *client, double timeout);
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/**
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* Synchronously executes TDLib request. May be called from any thread.
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* Only a few requests can be executed synchronously.
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* Returned pointer will be deallocated by TDLib during next call to td_json_client_receive or td_json_client_execute
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* in the same thread, so it can't be used after that.
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* \param[in] client The client. Currently ignored for all requests, so NULL can be passed.
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* \param[in] request JSON-serialized null-terminated request to TDLib.
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* \return JSON-serialized null-terminated request response.
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*/
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TDJSON_EXPORT const char *td_json_client_execute(void *client, const char *request);
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/**
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* Destroys the TDLib client instance. After this is called the client instance must not be used anymore.
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* \param[in] client The client.
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*/
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TDJSON_EXPORT void td_json_client_destroy(void *client);
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/**
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* \file
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* Alternatively, you can use new TDLib JSON interface, which will replace the current JSON interface in TDLib 2.0.0.
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*
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* Objects and functions serialization to JSON is the same for both JSON interfaces.
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*
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* The main TDLib interface is asynchronous. To match requests with a corresponding response, the field "@extra" can
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* be added to the request object. The corresponding response will have an "@extra" field with exactly the same value.
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* Each returned object will have an "@client_id" field, containing the identifier of the client for which
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@ -129,6 +50,12 @@ TDJSON_EXPORT void td_json_client_destroy(void *client);
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* \endcode
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*/
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#include "td/telegram/tdjson_export.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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* Returns an opaque identifier of a new TDLib instance.
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* The TDLib instance will not send updates until the first request is sent to it.
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@ -181,6 +108,79 @@ typedef void (*td_log_message_callback_ptr)(int verbosity_level, const char *mes
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*/
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TDJSON_EXPORT void td_set_log_message_callback(int max_verbosity_level, td_log_message_callback_ptr callback);
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/**
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* \file
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* Alternatively, you can use old TDLib JSON interface, which will be removed at TDLib 2.0.0.
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*
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* Objects and functions serialization to JSON is the same for both JSON interfaces.
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*
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* A TDLib client instance can be created through td_json_client_create.
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* Requests then can be sent using td_json_client_send from any thread.
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* New updates and request responses can be received through td_json_client_receive from any thread. This function
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* must not be called simultaneously from two different threads. Also note that all updates and request responses
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* must be applied in the order they were received to ensure consistency.
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* Given this information, it's advisable to call this function from a dedicated thread.
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* Some service TDLib requests can be executed synchronously from any thread by using td_json_client_execute.
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* The TDLib client instance can be destroyed via td_json_client_destroy.
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*
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* General pattern of usage:
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* \code
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* void *client = td_json_client_create();
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* // somehow share the client with other threads, which will be able to send requests via td_json_client_send
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*
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* const double WAIT_TIMEOUT = 10.0; // seconds
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* int is_closed = 0; // should be set to 1, when updateAuthorizationState with authorizationStateClosed is received
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* while (!is_closed) {
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* const char *result = td_json_client_receive(client, WAIT_TIMEOUT);
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* if (result) {
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* // parse the result as JSON object and process it as an incoming update or an answer to a previously sent request
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* }
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* }
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* td_json_client_destroy(client);
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* \endcode
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*/
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/**
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* Creates a new instance of TDLib.
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* \return Pointer to the created instance of TDLib.
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*/
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TDJSON_EXPORT void *td_json_client_create();
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/**
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* Sends request to the TDLib client. May be called from any thread.
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* \param[in] client The client.
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* \param[in] request JSON-serialized null-terminated request to TDLib.
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*/
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TDJSON_EXPORT void td_json_client_send(void *client, const char *request);
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/**
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* Receives incoming updates and request responses from the TDLib client. May be called from any thread, but
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* must not be called simultaneously from two different threads.
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* Returned pointer will be deallocated by TDLib during next call to td_json_client_receive or td_json_client_execute
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* in the same thread, so it can't be used after that.
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* \param[in] client The client.
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* \param[in] timeout The maximum number of seconds allowed for this function to wait for new data.
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* \return JSON-serialized null-terminated incoming update or request response. May be NULL if the timeout expires.
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*/
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TDJSON_EXPORT const char *td_json_client_receive(void *client, double timeout);
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/**
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* Synchronously executes TDLib request. May be called from any thread.
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* Only a few requests can be executed synchronously.
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* Returned pointer will be deallocated by TDLib during next call to td_json_client_receive or td_json_client_execute
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* in the same thread, so it can't be used after that.
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* \param[in] client The client. Currently ignored for all requests, so NULL can be passed.
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* \param[in] request JSON-serialized null-terminated request to TDLib.
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* \return JSON-serialized null-terminated request response.
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*/
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TDJSON_EXPORT const char *td_json_client_execute(void *client, const char *request);
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/**
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* Destroys the TDLib client instance. After this is called the client instance must not be used anymore.
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* \param[in] client The client.
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*/
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TDJSON_EXPORT void td_json_client_destroy(void *client);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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