* While building the file, the server that is created as the child process is not getting exited.
* But the server is terminated while the test is run individually.
* wget_http3_get_response returns the data that the http3 client stream has read
* all fprintf converted into debug_printf and error_printf
* fixed issues mentioned in the thread
* defined local and remote info_addr in wget_quic_st as local
* removed _set_async function call as it was redundant
* if wget_ssl_quic_open fails, closed the socket
* implemented log_printf using wget_debug_vprintf
* called wget_printf_exit if gnutls_rnd fails
* checked the input value of handshake_read()
* guarded functions and headers in quic.c and net.c using WITH_NGTCP2
* used wget_debug_printf and wget_error_printf in quic.c
* removed handshake_completed_db and handshake_confirmed_cb
* removed connection_write and connection_read
* implementated very basic callback functions for http3
* implemented wget_http3_send_request to create a http3 requests
* reimplemented the internal working of wget_queue_peak_untransmitted
* example code for sending http3 request implemented
* Added a bool in wget_byte struct named transmitted
* Implemented function wget_queue_peak_untransmitted_data
* This function will return first untransmitted byte
* Implemented wget_http3_deinit
* created http3.c and http3.h and implemented wget_http3_connection_st
* implemented http3 initialisation function to intialise the http3_connection struct
* shifted stream functions to a seperate stream.c file
* quic_write_read.c file created to demonstrate the working of wget_quic_read
and wget_quic_write hand in hand while configuring it to the QUIC ECHO server
* quic_write.c file created to make provide a example of write.
* A sample string initially pushed into the stream and then the stream
structure further utilised for sending the data over socket.
* Simplified the implementation of wget_quic_connect() and wget_ssl_quic_connect()
* Segregated the function wget_quic_connect into wget_quic_connect and wget_quic_handshake
* Restored signatures of wget_ssl_open and wget_ssl_init and created new functions for quic related SSL set up.
* Moved all the quic related file to a new file named quic.c from net.c
* net.c : wget_quic_connect edited to use DNS for resolving
* dns.c : resolve and wget_dns_resolve edited to resolve for SOCK_DGRAM as well as SOCK_STREAM
*net.c : wget_quic_connet function implemented
*ssl_gnutls.c : wget_ssl_quic_open and wget_ssl_quic_open functions implemented
*queue.c: Implementation of queue using linked list
Add support for libproxy, which is capable to extract desktop
environment proxy configurations from dozens of systems and platforms.
This also enables wget to handle pac/wpad proxy server.
* configure.ac: Add check for libbproxy.
* libwget/http.c (wget_http_open): Retrieve proxy via libproxy.
Copyright-paperwork-exempt: Yes
