# initByCaller(Object req)

This interface is asynchronous and returns thePromiseobject.

Start the call and get the call room number. When this interface is called, a VoIP room is created and an answer alert is pushed to the receiver.

It is recommended to read interface introduction first.

# parameter

# Object req

# Return value

For historical reasons, a failed call to this interface may throw an exception (typically a parameter error) and may returnisSuccess: false(It's usually a background error.)

After the interface returns successfully, you still need to use theisSuccessfield to determine whether the call finally succeeded.

# Object

When the interface is called successfully, it returns as follows

When the call fails, the interface returns as follows:

# About businessType

Some of the parameters corresponding to different businessType have different meanings. Please refer to the corresponding business documentation for the specific way to obtain the parameters.

• Before initiating a call, the user corresponding to the openId need to be authorized in the WeChat client's Weixin Mini Program in advance. See the authorization document ;
• When passing in the id as the device SN, name forces the "deviceName" + "modelId corresponding to the device model" used for user authorization, not the name passed in by the developer.
• This interfacebusinessType = 2supports Android WMPF only, call Linux devices please use callDevice .
• This interfacebusinessType = 2does not support license billing, mobile WeChat calling Android WMPF is recommended callWMPF 。

# sample code

const wmpfVoip = requirePlugin('wmpf-voip').default

try {
  const { isSuccess } = await wmpfVoip.initByCaller({
    caller: {
      id: '拨打方 Id',
      name: '拨打方名字',
    },
    listener: {
      id: '接听方 Id',
      name: '接听方名字',
    },
    roomType: 'video',
    businessType: 1,
    voipToken: 'xxxx*****xxxx',
    miniprogramState: 'developer', // 开发阶段建议使用开发版
  })

  if (isSuccess /* && 当前不在插件页面 */) {
    wx.redirectTo({
      url: wmpfVoip.CALL_PAGE_PATH,
    })
  } else {
    wx.showToast({
      title: '呼叫失败',
      icon: 'error',
    })
  }
} catch (e) {
  wx.showToast({
    title: '呼叫失败',
    icon: 'error',
  })
}