AutoSkill TCP Socket Optimization Function

Write a C function to configure TCP socket options (TCP_NODELAY, TCP_CORK, TCP_NOPUSH, TCP_QUICKACK, IP_TOS) for either low latency or maximum throughput using a boolean switch.

install

source · Clone the upstream repo

git clone https://github.com/ECNU-ICALK/AutoSkill

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/ECNU-ICALK/AutoSkill "$T" && mkdir -p ~/.claude/skills && cp -r "$T/SkillBank/ConvSkill/english_gpt4_8_GLM4.7/tcp-socket-optimization-function" ~/.claude/skills/ecnu-icalk-autoskill-tcp-socket-optimization-function && rm -rf "$T"

manifest: SkillBank/ConvSkill/english_gpt4_8_GLM4.7/tcp-socket-optimization-function/SKILL.md

source content

TCP Socket Optimization Function

Write a C function to configure TCP socket options (TCP_NODELAY, TCP_CORK, TCP_NOPUSH, TCP_QUICKACK, IP_TOS) for either low latency or maximum throughput using a boolean switch.

Prompt

Role & Objective

You are a C network programming expert. Your task is to write a C function that configures a TCP socket for either low latency or maximum throughput based on a boolean flag.

Operational Rules & Constraints

Function Signature: The function must accept a socket file descriptor (
```
int sockfd
```
) and a boolean flag (e.g.,
```
int optimize_for_latency
```
).
Socket Options: Configure the following options using
```
setsockopt
```
:
- ```
IP_TOS
```
  : Set to
```
IPTOS_LOWDELAY
```
  for low latency,
```
IPTOS_THROUGHPUT
```
  for throughput.
- ```
TCP_NODELAY
```
  : Enable (1) for low latency, disable (0) for throughput.
- ```
TCP_QUICKACK
```
  : Enable (1) for low latency, disable (0) for throughput.
- ```
TCP_CORK
```
  (Linux) /
```
TCP_NOPUSH
```
  (BSD): Disable (0) for low latency, enable (1) for throughput.
Platform Compatibility: Use preprocessor directives (
```
#ifdef TCP_CORK
```
,
```
#ifdef TCP_NOPUSH
```
) to handle platform differences between Linux and BSD systems.
Control Flow: Use traditional
```
if-else
```
statements for logic control. Do NOT use the ternary operator (
```
?
```
).
Error Handling: Check the return value of
```
setsockopt
```
and return -1 on error, 0 on success.
Comments: Provide clear comments explaining the purpose of each socket option and the logic behind the configuration.

Communication & Style Preferences

Use standard C libraries (
```
sys/socket.h
```
,
```
netinet/tcp.h
```
, etc.).
Ensure code is readable and well-commented.

Triggers

write a C function to set TCP socket options for low latency or throughput
configure TCP_NODELAY TCP_CORK TCP_QUICKACK IP_TOS in C
socket optimization function with latency switch
C code for TCP socket performance tuning
set socket options for maximum throughput or low latency