Mini-Servidor em C++

hello.cpp

#include <cstdlib>
#include <iostream>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>


using namespace std;

int main(int argc, char **argv) {
	int sock, client;
	cout << "Hello World\n" << flush;
	sock= socket(AF_INET, SOCK_STREAM, 0);

	if(sock < 0) {
		cerr << "Socket nao pode ser criado\n" << flush;
		return EXIT_FAILURE;
	}
	struct sockaddr_in addr, client_addr;
	addr.sin_family = AF_INET;
	addr.sin_port = htons(atoi("8585"));
	addr.sin_addr.s_addr = INADDR_ANY;
	bind(sock, (sockaddr *) &addr, sizeof(addr));
	listen(sock, 1000);
	cout << "Escutando na porta 8585\n" << flush;
	char response[] = "HTTP/1.1 200\r\nContent-Type: text/plain\r\n\r\nHello World";
	while(true) {
		socklen_t clilen = sizeof(client_addr);
		client = accept(sock, (struct sockaddr *) &client_addr, &clilen);
		cout << "Recebida conexao\n" << flush;
		if(client < 0) {
			cerr << "Socket nao pode ser aceito\n" << flush;
		}
		write(client, &response, sizeof(response)-1);
		close(client);
	}
	close(sock);

	return EXIT_SUCCESS;
}

hello.s

	.file	"hello.cpp"
	.local	_ZStL8__ioinit
	.comm	_ZStL8__ioinit,1,1
	.section	.rodata
.LC0:
	.string	"Hello World\n"
.LC1:
	.string	"Socket nao pode ser criado\n"
.LC2:
	.string	"8585"
.LC3:
	.string	"Escutando na porta 8585\n"
.LC4:
	.string	"Recebida conexao\n"
.LC5:
	.string	"Socket nao pode ser aceito\n"
	.text
	.globl	main
	.type	main, @function
main:
.LFB970:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$144, %rsp
	movl	%edi, -132(%rbp)
	movq	%rsi, -144(%rbp)
	movq	%fs:40, %rax
	movq	%rax, -8(%rbp)
	xorl	%eax, %eax
	movl	$.LC0, %esi
	movl	$_ZSt4cout, %edi
	call	_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc
	movl	$_ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_, %esi
	movq	%rax, %rdi
	call	_ZNSolsEPFRSoS_E
	movl	$0, %edx
	movl	$1, %esi
	movl	$2, %edi
	call	socket
	movl	%eax, -120(%rbp)
	cmpl	$0, -120(%rbp)
	jns	.L2
	movl	$.LC1, %esi
	movl	$_ZSt4cerr, %edi
	call	_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc
	movl	$_ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_, %esi
	movq	%rax, %rdi
	call	_ZNSolsEPFRSoS_E
	movl	$1, %eax
	movq	-8(%rbp), %rdx
	xorq	%fs:40, %rdx
	je	.L5
	jmp	.L6
.L2:
	movw	$2, -48(%rbp)
	movl	$.LC2, %edi
	call	atoi
	movzwl	%ax, %eax
	movl	%eax, %edi
	call	htons
	movw	%ax, -46(%rbp)
	movl	$0, -44(%rbp)
	leaq	-48(%rbp), %rcx
	movl	-120(%rbp), %eax
	movl	$16, %edx
	movq	%rcx, %rsi
	movl	%eax, %edi
	call	bind
	movl	-120(%rbp), %eax
	movl	$1000, %esi
	movl	%eax, %edi
	call	listen
	movl	$.LC3, %esi
	movl	$_ZSt4cout, %edi
	call	_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc
	movl	$_ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_, %esi
	movq	%rax, %rdi
	call	_ZNSolsEPFRSoS_E
	movl	$1347703880, -112(%rbp)
	movl	$825110831, -108(%rbp)
	movl	$808464928, -104(%rbp)
	movl	$1866664461, -100(%rbp)
	movl	$1852142702, -96(%rbp)
	movl	$2035559796, -92(%rbp)
	movl	$540697968, -88(%rbp)
	movl	$1954047348, -84(%rbp)
	movl	$1634496559, -80(%rbp)
	movl	$168652393, -76(%rbp)
	movl	$1699219981, -72(%rbp)
	movl	$544173164, -68(%rbp)
	movl	$1819438935, -64(%rbp)
	movw	$100, -60(%rbp)
.L4:
	movl	$16, -124(%rbp)
	leaq	-124(%rbp), %rdx
	leaq	-32(%rbp), %rcx
	movl	-120(%rbp), %eax
	movq	%rcx, %rsi
	movl	%eax, %edi
	call	accept
	movl	%eax, -116(%rbp)
	movl	$.LC4, %esi
	movl	$_ZSt4cout, %edi
	call	_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc
	movl	$_ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_, %esi
	movq	%rax, %rdi
	call	_ZNSolsEPFRSoS_E
	cmpl	$0, -116(%rbp)
	jns	.L3
	movl	$.LC5, %esi
	movl	$_ZSt4cerr, %edi
	call	_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc
	movl	$_ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_, %esi
	movq	%rax, %rdi
	call	_ZNSolsEPFRSoS_E
.L3:
	leaq	-112(%rbp), %rcx
	movl	-116(%rbp), %eax
	movl	$53, %edx
	movq	%rcx, %rsi
	movl	%eax, %edi
	call	write
	movl	-116(%rbp), %eax
	movl	%eax, %edi
	call	close
	jmp	.L4
.L6:
	call	__stack_chk_fail
.L5:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE970:
	.size	main, .-main
	.type	_Z41__static_initialization_and_destruction_0ii, @function
_Z41__static_initialization_and_destruction_0ii:
.LFB976:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	subq	$16, %rsp
	movl	%edi, -4(%rbp)
	movl	%esi, -8(%rbp)
	cmpl	$1, -4(%rbp)
	jne	.L7
	cmpl	$65535, -8(%rbp)
	jne	.L7
	movl	$_ZStL8__ioinit, %edi
	call	_ZNSt8ios_base4InitC1Ev
	movl	$_ZNSt8ios_base4InitD1Ev, %eax
	movl	$__dso_handle, %edx
	movl	$_ZStL8__ioinit, %esi
	movq	%rax, %rdi
	call	__cxa_atexit
.L7:
	leave
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE976:
	.size	_Z41__static_initialization_and_destruction_0ii, .-_Z41__static_initialization_and_destruction_0ii
	.type	_GLOBAL__sub_I_main, @function
_GLOBAL__sub_I_main:
.LFB977:
	.cfi_startproc
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset 6, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register 6
	movl	$65535, %esi
	movl	$1, %edi
	call	_Z41__static_initialization_and_destruction_0ii
	popq	%rbp
	.cfi_def_cfa 7, 8
	ret
	.cfi_endproc
.LFE977:
	.size	_GLOBAL__sub_I_main, .-_GLOBAL__sub_I_main
	.section	.ctors,"aw",@progbits
	.align 8
	.quad	_GLOBAL__sub_I_main
	.weakref	_ZL20__gthrw_pthread_oncePiPFvvE,pthread_once
	.weakref	_ZL27__gthrw_pthread_getspecificj,pthread_getspecific
	.weakref	_ZL27__gthrw_pthread_setspecificjPKv,pthread_setspecific
	.weakref	_ZL22__gthrw_pthread_createPmPK14pthread_attr_tPFPvS3_ES3_,pthread_create
	.weakref	_ZL20__gthrw_pthread_joinmPPv,pthread_join
	.weakref	_ZL21__gthrw_pthread_equalmm,pthread_equal
	.weakref	_ZL20__gthrw_pthread_selfv,pthread_self
	.weakref	_ZL22__gthrw_pthread_detachm,pthread_detach
	.weakref	_ZL22__gthrw_pthread_cancelm,pthread_cancel
	.weakref	_ZL19__gthrw_sched_yieldv,sched_yield
	.weakref	_ZL26__gthrw_pthread_mutex_lockP15pthread_mutex_t,pthread_mutex_lock
	.weakref	_ZL29__gthrw_pthread_mutex_trylockP15pthread_mutex_t,pthread_mutex_trylock
	.weakref	_ZL31__gthrw_pthread_mutex_timedlockP15pthread_mutex_tPK8timespec,pthread_mutex_timedlock
	.weakref	_ZL28__gthrw_pthread_mutex_unlockP15pthread_mutex_t,pthread_mutex_unlock
	.weakref	_ZL26__gthrw_pthread_mutex_initP15pthread_mutex_tPK19pthread_mutexattr_t,pthread_mutex_init
	.weakref	_ZL29__gthrw_pthread_mutex_destroyP15pthread_mutex_t,pthread_mutex_destroy
	.weakref	_ZL30__gthrw_pthread_cond_broadcastP14pthread_cond_t,pthread_cond_broadcast
	.weakref	_ZL27__gthrw_pthread_cond_signalP14pthread_cond_t,pthread_cond_signal
	.weakref	_ZL25__gthrw_pthread_cond_waitP14pthread_cond_tP15pthread_mutex_t,pthread_cond_wait
	.weakref	_ZL30__gthrw_pthread_cond_timedwaitP14pthread_cond_tP15pthread_mutex_tPK8timespec,pthread_cond_timedwait
	.weakref	_ZL28__gthrw_pthread_cond_destroyP14pthread_cond_t,pthread_cond_destroy
	.weakref	_ZL26__gthrw_pthread_key_createPjPFvPvE,pthread_key_create
	.weakref	_ZL26__gthrw_pthread_key_deletej,pthread_key_delete
	.weakref	_ZL30__gthrw_pthread_mutexattr_initP19pthread_mutexattr_t,pthread_mutexattr_init
	.weakref	_ZL33__gthrw_pthread_mutexattr_settypeP19pthread_mutexattr_ti,pthread_mutexattr_settype
	.weakref	_ZL33__gthrw_pthread_mutexattr_destroyP19pthread_mutexattr_t,pthread_mutexattr_destroy
	.ident	"GCC: (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3"
	.section	.note.GNU-stack,"",@progbits