+
+static memcached_return binary_mget_by_key(memcached_st *ptr,
+ unsigned int master_server_key,
+ char **keys, size_t *key_length,
+ unsigned int number_of_keys)
+{
+ memcached_return rc= MEMCACHED_NOTFOUND;
+ uint32_t x;
+
+ int flush= number_of_keys == 1;
+
+ /*
+ If a server fails we warn about errors and start all over with sending keys
+ to the server.
+ */
+ for (x= 0; x < number_of_keys; x++)
+ {
+ unsigned int server_key;
+
+ if (master_server_key)
+ server_key= master_server_key;
+ else
+ server_key= memcached_generate_hash(ptr, keys[x], key_length[x]);
+
+ if (memcached_server_response_count(&ptr->hosts[server_key]) == 0)
+ {
+ rc= memcached_connect(&ptr->hosts[server_key]);
+ if (rc != MEMCACHED_SUCCESS)
+ continue;
+ }
+
+ protocol_binary_request_getk request= {.bytes= {0}};
+ request.message.header.request.magic= PROTOCOL_BINARY_REQ;
+ if (number_of_keys == 1)
+ request.message.header.request.opcode= PROTOCOL_BINARY_CMD_GETK;
+ else
+ request.message.header.request.opcode= PROTOCOL_BINARY_CMD_GETKQ;
+
+ request.message.header.request.keylen= htons((uint16_t)key_length[x]);
+ request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
+ request.message.header.request.bodylen= htonl(key_length[x]);
+
+ if ((memcached_io_write(&ptr->hosts[server_key], request.bytes,
+ sizeof(request.bytes), 0) == -1) ||
+ (memcached_io_write(&ptr->hosts[server_key], keys[x],
+ key_length[x], flush) == -1))
+ {
+ memcached_server_response_reset(&ptr->hosts[server_key]);
+ rc= MEMCACHED_SOME_ERRORS;
+ continue;
+ }
+ memcached_server_response_increment(&ptr->hosts[server_key]);
+ }
+
+ if (number_of_keys > 1)
+ {
+ /*
+ * Send a noop command to flush the buffers
+ */
+ protocol_binary_request_noop request= {.bytes= {0}};
+ request.message.header.request.magic= PROTOCOL_BINARY_REQ;
+ request.message.header.request.opcode= PROTOCOL_BINARY_CMD_NOOP;
+ request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
+
+ for (x= 0; x < ptr->number_of_hosts; x++)
+ if (memcached_server_response_count(&ptr->hosts[x]))
+ {
+ if (memcached_io_write(&ptr->hosts[x], NULL, 0, 1) == -1)
+ {
+ memcached_server_response_reset(&ptr->hosts[x]);
+ memcached_io_reset(&ptr->hosts[x]);
+ rc= MEMCACHED_SOME_ERRORS;
+ }
+
+ if (memcached_io_write(&ptr->hosts[x], request.bytes,
+ sizeof(request.bytes), 1) == -1)
+ {
+ memcached_server_response_reset(&ptr->hosts[x]);
+ memcached_io_reset(&ptr->hosts[x]);
+ rc= MEMCACHED_SOME_ERRORS;
+ }
+ memcached_server_response_increment(&ptr->hosts[x]);
+ }
+ }
+
+
+ return rc;
+}