The problems with TCP keepalive are: It is off by default. It operates at two-hour intervals by default, instead of on-demand as the Ping/Pong protocol provides. It operates between proxies rather than end to end. As pointed out by @DavidSchwartz, it operates between TCP stacks, not between the applications so therefore it doesn’t tell us … Read more
What about SCTP. It’s a standard protocol by the IETF (RFC 4960) It has chunking capability which could help for speed. Update: a comparison between TCP and SCTP shows that the performances are comparable unless two interfaces can be used. Update: a nice introductory article.
You can use encoding/binary’s ByteOrder to do this for 16, 32, 64 bit types Play package main import “fmt” import “encoding/binary” func main() { var mySlice = []byte{244, 244, 244, 244, 244, 244, 244, 244} data := binary.BigEndian.Uint64(mySlice) fmt.Println(data) }
The connection should remain open regardless but yes it’s often common to see protocols implement a heartbeat in order to help detect dead connections, IRC with the PING command for example.
Drawbacks of using TCP for live video: As you mentioned, TCP buffers the unacknowledged segments for every client. In some cases this is undesirable, such as TCP streaming for very popular live events: your list of simultaneous clients (and buffering requirements) are large in this case. Pre-recorded video-casts typically don’t have as much of a … Read more
For my suggestion, please read the last section: “When to use SO_LINGER with timeout 0”. Before we come to that a little lecture about: Normal TCP termination TIME_WAIT FIN, ACK and RST Normal TCP termination The normal TCP termination sequence looks like this (simplified): We have two peers: A and B A calls close() A … Read more
In Short: TCP is a transport-layer protocol, and HTTP is an application-layer protocol that runs over TCP. Detail:To understand the difference (and a lot of other networking topics), you need to understand the idea of a layered networking model. Essentially, there are different protocols that let a computer talk at different distances and different layers … Read more
You can use the setsockopt function to set a timeout on receive operations: SO_RCVTIMEO Sets the timeout value that specifies the maximum amount of time an input function waits until it completes. It accepts a timeval structure with the number of seconds and microseconds specifying the limit on how long to wait for an input … Read more
Go here and pick a port with the description Unassigned
Yes, you can use the same port number for both TCP and UDP. Many protocols already do this, for example DNS works on udp/53 and tcp/53. Technically the port pools for each protocol are completely independent, but for higher level protocols that can use either TCP or UDP it’s convention that they default to the … Read more