Praveen Nadipalli’s Post

UDP Header UDP header is an 8-byte fixed and simple header, while for TCP it may vary from 20 bytes to 60 bytes. The first 8 Bytes contain all necessary header information and the remaining part consists of data. UDP port number fields are each 16 bits long, therefore the range for port numbers is defined from 0 to 65535; port number 0 is reserved. Port numbers help to distinguish different user requests or processes. •Source Port: Source Port is a 2 Byte long field used to identify the port number of the source. •Destination Port: It is a 2 Byte long field, used to identify the port of the destined packet. •Length: Length is the length of UDP including the header and the data. It is a 16-bits field. •Checksum: Checksum is 2 Bytes long field. It is the 16-bit one’s complement of the one’s complement sum of the UDP header, the pseudo-header of information from the IP header, and the data, padded with zero octets at the end (if necessary) to make a multiple of two octets. Mrwebsecure Infosolutions Private Limited

TCP timers are essential for ensuring reliable data transmission and connection management. Here's a quick breakdown of different TCP timers. 1. Retransmission Timer: Retransmits lost packets if no acknowledgment (ACK) is received within a certain time. 2. Persistent Timer: Prevents deadlocks by sending window probes when the receiver's buffer is full. 3. Keepalive Timer: Checks if the connection is still alive during idle periods. 4. Time-Wait Timer: Ensures old duplicate segments are discarded after connection termination. 5. Delayed ACK Timer: Delays ACKs slightly to allow potential data piggybacking. 6. FIN-Wait Timer: Manages connection closure by waiting for ACK after sending a FIN. These timers ensure that TCP remains reliable and efficient!

Tcp Header contain the below will be in 20-60 bytes Source Port: Identifies the sender’s port. Destination Port: Identifies the receiver’s port. Sequence Number: Tracks the order of sent bytes. Acknowledgement Number: Confirms receipt of bytes. Data Offset: Specifies header length Reserved: Reserved for future use Flags: Controls connection (e.g., SYN, ACK). Window Size: Controls flow by indicating buffer space. Checksum: Validates header and data integrity.(Error checking ) Urgent Pointer: Indicates urgent data in the stream. Options: Provides additional functionalities.

The TCP header is a tiny but powerful component and the key to reliable and smooth network communication. It’s like the passport for your data packets! https://bit.ly/3WYjDwA

Troubleshooting TCP Unidirectional Data Transfer Throughput with Wireshark

Troubleshooting TCP Unidirectional Data Transfer Throughput with Wireshark

Troubleshooting TCP Unidirectional Data Transfer Throughput with Wireshark

Troubleshooting TCP Unidirectional Data Transfer Throughput with Wireshark

The retry(3) function ensures that the flow is retried up to 3 times when an exception occurs. Specifically, after emitting the data "banti", the flow throws an exception to simulate a network error. The retry(3) mechanism kicks in and attempts to re-execute the flow three times before finally propagating the error. The condition e is Exception ensures that only network-related exceptions trigger the retry, providing resilience against transient errors like network failures while preventing unnecessary retries for other types of errors...