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Integration with the service (API)

The API allows you to send messages through your projects and services over HTTP/HTTPS, SMTP and SMPP protocols. Ready-made libraries in different programming languages connect to your project and help you send messages from anywhere with a single command. For simplified authorization, instead of a login and password pair, you can use a special API key.
HTTP/HTTPS SMTP SMPP SOAP OMS SMS Commands Libraries and code examples

MESSAGES SENDING

MANAGING MAILING LISTS

MESSAGE STATUSES

CHECKING THE BALANCE STATUS

MANAGING CONTACTS

CLIENT MANAGEMENT

MANAGING SENDER NAMES (SENDER ID)

GETTING DATA

VARIOUS

Checking the balance status

Balance Request

To request a balance, use the address: https://smscentre.com/sys/balance.php?login=<login>&psw=<password>
The following parameters are passed to the server:

OptionThe value
loginCustomer Login.
pswClient Password (you can add or change it on this page).
apikeyA special API key used for simplified authorization instead of the "login+password" pair (you can create it on this page).
curFlag indicating whether the Client's currency name should be added to the server response.
fmtServer response format:
0 or 1 – (default) as a string (250.80).
2 – in xml format.
3 – in json format.

Balance. Server response and error codes

If an error occurs, the Server returns the following string:
  • When fmt = 0:
    ERROR = N (description)

  • When fmt = 1:
    0,-N

  • When fmt = 2:
    <result>
    <error>description</error>
    <error_code>N</error_code>
    </result>

  • When fmt = 3:
    {
    "error": "description",
    "error_code": N
    }
N – error number, can take the following values:

The valueDescription
1Error in parameters.
2Invalid username or password. Also occurs when trying to send a message from an IP address that is not included in the list of allowed by the Client (if such a list was previously configured by the Client).
4The IP address is temporarily blocked.
9Attempt to send more than ten balance requests within a minute.
This error also occurs when you try to send fifteen or more requests simultaneously from different connections under the same username (too many concurrent requests).

If the request is successful, the Server returns a response in the form of a string:

When cur = 0:
  • when fmt = 0 or 1: <balance>

  • when fmt = 2: <balance>balance</balance>

  • when fmt = 3:
    {
    "balance": "<balance>"
    }

With cur = 1 and a non-zero credit:
  • when fmt = 0: <balance> <currency>

  • when fmt = 1: <balance>,<currency>

  • When fmt = 2:
    <result>
    <balance>balance</balance>
    <credit>credit</credit>
    <currency>currency</currency>
    </result>

  • when fmt = 3:
    {
    "balance": "<balance>",
    "credit": "<credit>",
    "currency": "<currency>"
    }
Where:
<balance> – current balance status.
<credit> – current status of the established credit.
<currency> – customer's Currency.

The server does not accept more than ten balance requests per minute to reduce the load and protect against errors and loops in the Client-side program.




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