The HTTP Transaction API provides functions for managing HTTP transactions.

Required Header

#include <http.h>

Overview

It allows managing HTTP transactions. Using the HTTP transaction, you can implement features that allow the users of your application to:

Open/Close transactions
Pause/Resume transaction
Transfer HTTP request
Get/Set transaction options such as interface, verification and timeout

Functions
int	http_transaction_submit (http_transaction_h http_transaction)
	Submits the HTTP request.
int	http_transaction_destroy (http_transaction_h http_transaction)
	Closes the HTTP transaction handle.
int	http_transaction_set_received_header_cb (http_transaction_h http_transaction, http_transaction_header_cb header_cb, void *user_data)
	Registers callback called when receives header.
int	http_transaction_set_received_body_cb (http_transaction_h http_transaction, http_transaction_body_cb body_cb, void *user_data)
	Registers callback called when receives body.
int	http_transaction_set_uploaded_cb (http_transaction_h http_transaction, http_transaction_write_cb write_cb, void *user_data)
	Registers callback called when writes data.
int	http_transaction_set_completed_cb (http_transaction_h http_transaction, http_transaction_completed_cb completed_cb, void *user_data)
	Registers callback called when transaction is completed.
int	http_transaction_set_aborted_cb (http_transaction_h http_transaction, http_transaction_aborted_cb aborted_cb, void *user_data)
	Registers callback called when transaction is aborted.
int	http_transaction_set_progress_cb (http_transaction_h http_transaction, http_transaction_progress_cb progress_cb, void *user_data)
	Registers the progress callbacks.
int	http_transaction_set_timeout (http_transaction_h http_transaction, int timeout)
	Sets the timeout in seconds that is the timeout for waiting the transaction.
int	http_transaction_get_timeout (http_transaction_h http_transaction, int *timeout)
	Gets the timeout in seconds for the transaction.
int	http_transaction_resume (http_transaction_h http_transaction)
	Resumes the transaction.
int	http_transaction_pause (http_transaction_h http_transaction, http_pause_type_e pause_type)
	Pauses the transaction.
int	http_transaction_cancel (http_transaction_h http_transaction)
	Cancels the transaction.
int	http_transaction_set_ready_to_write (http_transaction_h http_transaction, bool read_to_write)
	Sets ready to write event for a transaction.
int	http_transaction_set_interface_name (http_transaction_h http_transaction, const char *interface_name)
	Sets the interface name.
int	http_transaction_get_interface_name (http_transaction_h http_transaction, char **interface_name)
	Gets the interface name.
int	http_transaction_set_server_certificate_verification (http_transaction_h http_transaction, bool verify)
	Sets the flag to verify a server certificate.
int	http_transaction_get_server_certificate_verification (http_transaction_h http_transaction, bool *verify)
	Gets the flag to verify a server certificate.
int	http_transaction_set_tcp_fastopen (http_transaction_h http_transaction, bool enable)
	Sets the flag to allow TCP Fast Open.
int	http_transaction_get_tcp_fastopen (http_transaction_h http_transaction, bool *enable)
	Gets the flag to allow TCP Fast Open.

Function Documentation

int http_transaction_cancel ( http_transaction_h http_transaction )

Cancels the transaction.

This function cancels the transaction.
The aborted callback is invoked after using it.

Since :: 3.0

Parameters:

[in] http_transaction The HTTP transaction handle

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_OPERATION_FAILED	Operation failed
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_destroy ( http_transaction_h http_transaction )

Closes the HTTP transaction handle.

Since :: 3.0

Remarks:: The http_transaction should be set to NULL after using it.

Parameters:

[in] http_transaction The HTTP transaction handle

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

See also:: http_session_open_transaction(); http_transaction_open_authentication()

int http_transaction_get_interface_name	(	http_transaction_h	http_transaction,
		char **	interface_name
	)

Gets the interface name.

Since :: 3.0

Remarks:: The interface_name should be freed using free().

Parameters:

[in]	http_transaction	The HTTP transaction handle
[out]	interface_name	The interface name

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_get_server_certificate_verification	(	http_transaction_h	http_transaction,
		bool *	verify
	)

Gets the flag to verify a server certificate.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[out]	verify	The flag to verify a server certificate; true means verifies; false means it doesn't.

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_get_tcp_fastopen	(	http_transaction_h	http_transaction,
		bool *	enable
	)

Gets the flag to allow TCP Fast Open.

Since :: 5.0

Remarks:: TCP Fast Open depends on kernel version.
HTTP_ERROR_NOT_SUPPORTED error will be returned for kernel version less than 3.13.

Parameters:

[in]	http_transaction	The HTTP transaction handle
[out]	enable	The flag to enable TCP Fast Open

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_get_timeout	(	http_transaction_h	http_transaction,
		int *	timeout
	)

Gets the timeout in seconds for the transaction.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[out]	timeout	The timeout in seconds

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_pause	(	http_transaction_h	http_transaction,
		http_pause_type_e	pause_type
	)

Pauses the transaction.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	pause_type	The pause type of the connection

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_OPERATION_FAILED	Operation failed
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_resume ( http_transaction_h http_transaction )

Resumes the transaction.

Since :: 3.0

Parameters:

[in] http_transaction The HTTP transaction handle

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_OPERATION_FAILED	Operation failed
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_aborted_cb	(	http_transaction_h	http_transaction,
		http_transaction_aborted_cb	aborted_cb,
		void *	user_data
	)

Registers callback called when transaction is aborted.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	aborted_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_completed_cb	(	http_transaction_h	http_transaction,
		http_transaction_completed_cb	completed_cb,
		void *	user_data
	)

Registers callback called when transaction is completed.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	completed_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_interface_name	(	http_transaction_h	http_transaction,
		const char *	interface_name
	)

Sets the interface name.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	interface_name	The interface name to use as outgoing network interface

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_progress_cb	(	http_transaction_h	http_transaction,
		http_transaction_progress_cb	progress_cb,
		void *	user_data
	)

Registers the progress callbacks.

Registers callback that is called when data is uploaded/downloaded.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	progress_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_ready_to_write	(	http_transaction_h	http_transaction,
		bool	read_to_write
	)

Sets ready to write event for a transaction.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[out]	read_to_write	Enable/disable ready to write

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_received_body_cb	(	http_transaction_h	http_transaction,
		http_transaction_body_cb	body_cb,
		void *	user_data
	)

Registers callback called when receives body.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	body_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_received_header_cb	(	http_transaction_h	http_transaction,
		http_transaction_header_cb	header_cb,
		void *	user_data
	)

Registers callback called when receives header.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	header_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_server_certificate_verification	(	http_transaction_h	http_transaction,
		bool	verify
	)

Sets the flag to verify a server certificate.

The verify determines whether verifies the peer's certificate.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	verify	The flag to verify a server certificate; true means verifies; false means it doesn't.

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_tcp_fastopen	(	http_transaction_h	http_transaction,
		bool	enable
	)

Sets the flag to allow TCP Fast Open.

Since :: 5.0

Remarks:: TCP Fast Open depends on kernel version.
HTTP_ERROR_NOT_SUPPORTED error will be returned for kernel version less than 3.13.

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	enable	The flag to enable TCP Fast Open

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_timeout	(	http_transaction_h	http_transaction,
		int	timeout
	)

Sets the timeout in seconds that is the timeout for waiting the transaction.

Sets the timeout in seconds that is the timeout for waiting the transaction.
A timeout value of zero means an infinite timeout.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	timeout	The timeout in seconds

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_set_uploaded_cb	(	http_transaction_h	http_transaction,
		http_transaction_write_cb	write_cb,
		void *	user_data
	)

Registers callback called when writes data.

Since :: 3.0

Parameters:

[in]	http_transaction	The HTTP transaction handle
[in]	write_cb	The callback function to be called
[in]	user_data	The user data passed to the callback function

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported

int http_transaction_submit ( http_transaction_h http_transaction )

Submits the HTTP request.

Since :: 3.0

Privilege Level:: public

Privilege:: http://tizen.org/privilege/internet
http://tizen.org/privilege/network.get

Parameters:

[in] http_transaction The HTTP transaction handle

Returns:: 0 on success, otherwise negative error value

Return values:

HTTP_ERROR_NONE	Successful
HTTP_ERROR_INVALID_PARAMETER	Invalid parameter
HTTP_ERROR_INVALID_OPERATION	Invalid operation
HTTP_ERROR_NOT_SUPPORTED	Not Supported
HTTP_ERROR_PERMISSION_DENIED	Permission denied

Required Header

Overview

Functions

Function Documentation