BPX1STO (sendto) example

The following code issues a sendto for a socket. SOCKDESC was returned from a previous call to either BPX1SOC or BPX1ACP. For the callable service, see sendto (BPX1STO, BPX4STO) — Send data on a socket. For the data structures, see BPXYSOCK — Map SOCKADDR structure and constants and BPXYMSGF — Map the message flags. AMODE 64 callers use BPX4STO (sendto) example.

                                              
         MVC   BUFFERA(16),=CL16'Here is the data'                      
         LA    R2,BUFFERA                                               
         ST    R2,IOV_BASE                                              
         MVI   IOV_LEN,16                                               
         SPACE ,                                                        
         CALL  BPX1STO,              Send data to a socket             +
               (SOCKDESC,            Input: Socket Descriptor          +
               =A(L'BUFFERA),        Input: Length of the input buffer +
               BUFFERA,              Input: input buffer               +
               PRIMARYALET,          Input: Alet of the input buffer   +
               MSG_FLAGS,            Input: Flags                      +
               =A(L'SOCKADDR),       Input: Length of the socket addr  +
               SOCKADDR,             Input: The socket address         +
               RETVAL,               Return value: 0 or -1             +
               RETCODE,              Return code                       +
               RSNCODE),             Reason code                       +
               VL,MF=(E,PLIST)       ----------------------------------