How to Fix: Linux: is there a read or recv from socket with timeout?
Try using recvwithmsg(), which allows you to specify a timeout and does not disable the tcp fast-path.
📋 Table of Contents
The issue you're facing is due to the nature of Linux's socket handling, which disables 'tcp fast-path' when using select, pselect, poll, or similar functions with a timeout. This is because these functions are designed for non-blocking I/O and can't be used in conjunction with TCP Fast Open. However, there's an alternative approach that doesn't involve disabling the fast path: using MSG_DONTWAIT with recv.
🛑 Root Causes of the Error
- Linux's socket handling disables 'tcp fast-path' when using select, pselect, poll, or similar functions with a timeout.
🛠️ Step-by-Step Verified Fixes
Method 1: Using MSG_DONTWAIT with recv()
- Step 1: Use recv() function in a loop with MSG_DONTWAIT flag to enable non-blocking I/O.
Example Code:
int fd = socket(AF_INET, SOCK_STREAM, 0); // Create a new socketfd = open( ❓ Frequently Asked Questions
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