Is bind() necessary if I want to receive data from a server using UDP?
Is it necessary to have in the client bind, if I want to receive data from a server?
I've seen a schema (look at the image below), and it seems that it's not necessary. But from what I know, bind is necessary to give an address to a socket. If I don't "bind" the socket, how can I send data to it?
As a client, the application needs to be aware of the server port to which it needs to connect, and as a server, the application needs to be aware of the server port to which it needs to listen. Therefore, the server needs to bind to an IP address and port so that the client can connect to it.
The client can simply create a socket and call connect(). Binding to an available IP address and ephemeral port shall implicitly happen. But, yes, nothing prevents you from having the client bind to a particular IP address and port.
In the case of UDP, despite there being no "connection" mechanism, servers still need to bind to IP addresses and ports to allow the clients to send data to them.
- Why would you use 'extern "C++"'?
- Strange Behavior Compiler Ignoring NULL Check Unless I Print Something in the if Statement
- Fast inverse square root using fixed point instead of floating point
- What is the const qualifier attached to in C: the memory area or the pointer?
- What is the scope of `fesetround()`?
- Is this declaration UB?
- GCC options for strictest C code?
- How to do an explicit fall-through in C
- How do compilers treat CONST qualifier when the pointer points to a memory location obtained with malloc()?
- C: cmocka headers - how to unittest?
- Why in C when I print a double with a one decimal it round it to the next number
- Android C to Java SWIG unable to compile: incompatible types: byte cannot be converted to SWIGTYPE_p_uint8_t
- GNU Make in Ubuntu giving fatal error: rpc/types.h: No such file or directory
- How can I exclude non-numeric keys? CS50 Caesar Pset2
- How change every struct in an array of pointers?
- Optimized 2x2 matrix multiplication: Slow assembly versus fast SIMD
- Simple frame by frame video decoder library
- GCC no longer implements <varargs.h>
- Contents of IO buffer unknown == unsafe?
- Avoiding strcpy overflow destination warning
- Sort program not working, not sure why
- Fast & accurate atan/arctan approximation algorithm
- What's the difference between strtok_r and strtok_s in C?
- How memory address for pointer to arrays is same as an element in 2D array?
- Which is the best way to suppress "unused variable" warning
- How to use ellipsis in c's case statement?
- Fast ceiling of an integer division in C / C++
- Is there an invalid pthread_t id?
- How to Implement Universal Setter/Getter Functions for Interrupt-Driven Variables in Embedded C?
- How does SIMD (avx) processing work? for example, if I want 10 32 bit floats how do i fit in a 256 bit avx vector?