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session-h.md

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# session.h
## **Overview**
**Related Modules:**
[Softbus](softbus.md)
**Description:**
Declares unified data transmission interfaces.
This file provides data transmission capabilities, including creating and removing a session server, opening and closing sessions, receiving data, and querying basic session information. After multiple nearby devices are discovered and networked, these interfaces can be used to transmit data across devices.
**Since:**
1.0
**Version:**
1.0
## **Summary**
## Data Structures

Data Structure Name	Description
ISessionListener	Defines session callbacks.

## Functions

Function Name	Description
CreateSessionServer (const char mouduleName, const char sessionName, struct ISessionListener *listener)	int Creates a session server based on a module name and session name.
RemoveSessionServer (const char mouduleName, const char sessionName)	int Removes a session server based on a module name and session name.
SendBytes (int sessionId, const void *data, unsigned int len)	int Sends data based on a session ID.
GetMySessionName (int sessionId, char *sessionName, unsigned int len)	int Obtains the session name registered by the local device based on the session ID.
GetPeerSessionName (int sessionId, char *sessionName, unsigned int len)	int Obtains the session name registered by the peer device based on the session ID.
GetPeerDeviceId (int sessionId, char *devId, unsigned int len)	int Obtains the peer device ID based on a session ID.
CloseSession (int sessionId)	void Closes a connected session based on a session ID.