TODO_bad_clients.txt

Bad clients:
 SMPP Connection and flow:
 * Do not send elink
 * Send elink too fast
 * Send elink too slow
 * Do not response with elink_resp
 * Unexpectedly drop connection (close socket without unbind)
 * Do not response to deliver_sm
 * Trying to connect with many sessions (semibad)
 * Do not wait for unbind (semibad)
 * Do not wait on throttling error
 * Too much connections / binds without delay
 * Drop connection on error in resp
 * Drop connection after request packet send
 * Sending submit_sm with expired absolute validity_period
 * Sending submit_sm with expired absolute scheduled_delivery_time
 * Drop connection after bind (not waiting for bind_resp)
 * Do not limit speed from client / not using windowing
 * Bind session for a single message
 * Send esm_class = 1 (datagram mode) with submit_sm and registered_delivery flag
 * Try to send messages in bind_receive session
 * Do not analyze deliver_sm
 ** For servers:
 *** Send submit_sm_resp after (semi)unlimited timeout. Answer with submit_sm_resp after 40 minutes.
 Encoding:
 * Using ASCII in short_message (semibad)
 * Using utf-8 in short_message (semibad)
 * Using utf-16 in short_message (semibad)
 * Using windows-1251
 * Using BOM in message
 * Using ASCII with gsm-7bit encoding (mostly bad)
 * Using 160-byte-lengthed messages for encoding to 7bit on SMSc side (mostly bad)
 * Using UCS-2 with little endian
 * Send HTML in sms such as <b></b>
 PDU encoding:
 * Using numbers started with 8 (semibad, bad for Russia)
 * Using numbers without prefix (7 for russia) ex. 9261234567
 * Using numbers with special characters 7(913)123-45-67
 * Using DEF-numbers with incorrect TON/NPI
 * Using Alpha-numbers with incorrect TON/NPI
 * Using + or 00 in International numbers (TON/NPI 1/1)
 * Using shortnumbers with incorrect TON/NPI
 UDH / SAR concatination:
 * Incorrect length for SAR-concatination (short_message longer than 134 octets)
 * Incorrect length for UDH-concatination (short_message longer than 134 octets without UDH)
 * Incorrect UDH-concatination (8 bit/16 bit/custom)
 * Incorrect esm_class with UDH
 * Incorrect number of messages and message number (semibad)
 * Incorrect order of parts (semibad)
 * Sending not all parts with current connection (semibad)
 * Sending all parts only after receiving deliver_sm for first part
 * Sending single SMS with UDH/SAR for 1 part
 * Sending single SMS with message_payload