Function sendCommandArgv

src/replication.cpp:3156–3176

Compose a multi-bulk command and send it to the connection. * Used to send AUTH and REPLCONF commands to the master before starting the * replication. * * argv_lens is optional, when NULL, strlen is used. * * The command returns an sds string representing the result of the * operation. On error the first byte is a "-". */

 * operation. On error the first byte is a "-".
 */
char *sendCommandArgv(connection *conn, int argc, const char **argv, size_t *argv_lens) {
    sds cmd = sdsempty();
    const char *arg;
    int i;

    /* Create the command to send to the master. */
    cmd = sdscatfmt(cmd,"*%i\r\n",argc);
    for (i=0; i<argc; i++) {
        int len;
        arg = argv[i];
        len = argv_lens ? argv_lens[i] : strlen(arg);
        cmd = sdscatfmt(cmd,"$%i\r\n",len);
        cmd = sdscatlen(cmd,arg,len);
        cmd = sdscatlen(cmd,"\r\n",2);
    }
    char* err = sendCommandRaw(conn, cmd);
    sdsfree(cmd);
    if (err)
        return err;
    return NULL;
}

/* Try a partial resynchronization with the master if we are about to reconnect.
 * If there is no cached master structure, at least try to issue a